MALICIOUS
204
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, many hosted on compromised CMS upload directories and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.
Machine Learning
- Nyx PDF Classifier malicious score 0.9657
Heuristics 8
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINKPDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL http://tunglamgarden.com/images/fck/file/xakibirotajogukos.pdf In PDF document text
- http://saltokisport.com/uploads/files/wulim.pdfIn PDF document text
- https://www.llgnjinc.com/wp-content/plugins/super-forms/uploads/php/files/c5f5cba4b53567824a9372d0cb6a1ec5/segamogexanupawilaje.pdfIn PDF document text
- https://digireg.nz/upload/91086513445.pdfIn PDF document text
- http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c93fa5b3b3---womejefadiluxujasagad.pdfIn PDF document text
- http://logo4you.dk/userfiles/file/vemefegejerafotepox.pdfIn PDF document text
- http://doublehappyvstheinfinitesadness.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ce34bf3e13---dorumakitofizezekedum.pdfIn PDF document text
- https://garyjetcenter.com/wp-content/plugins/super-forms/uploads/php/files/5198e8ee3f006ab5dd7bfeff79686c27/kapugatasoxano.pdfIn PDF document text
- http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/33ea24babed7c38f275bf07126ad0464/vowosuvasepirumotipujiv.pdfIn PDF document text
- https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a153a02dd07---68831239676.pdfIn PDF document text
- http://retrofotr.cz/files/file/17202971937.pdfIn PDF document text
- https://technok.cz/wp-content/plugins/super-forms/uploads/php/files/6afa5f48d72fd726510de366dcaca7dc/kitolidozuzawosidatufosut.pdfIn PDF document text
- http://stark-tools.ru/images/uploaded/50638677725.pdfIn PDF document text
- https://foreningenflex.se/anvandarbilder/173/files/vosub.pdfIn PDF document text
- https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/ee6ebe7b136565a47ee33875f3e79350/sifidinumiz.pdfIn PDF document text
- https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160abde13738e4---58775919028.pdfIn PDF document text
- https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/oaa6pjvh3mntrvieh6ru8o4mvi/tilokokegetak.pdfIn PDF document text
- https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609aef726fd8c---38459209964.pdfIn PDF document text
- http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d035fb5ec8---gakeneferili.pdfIn PDF document text
- https://nationalcardsolutions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a200ebd012d---51124101793.pdfIn PDF document text
- https://discoverapartmentsforrent.com/wp-content/plugins/super-forms/uploads/php/files/2527f5eeb63f84e4bac75e752934881a/fototesugasukopugonuram.pdfIn PDF document text
- http://abovomedia.hu/_user/file/dusisimovugojanutedu.pdfIn PDF document text
- http://ccapostolicchurch.org/clients/1/19/19d200bce63520a637954fb60b162b1a/File/62411771349.pdfIn PDF document text
- https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/svg1rpsuglilkg84u13al5tro2/68193568019.pdfIn PDF document text
- https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/da30c128f8da2f3f5af3bf5b0d2cc256/gabapudogobon.pdfIn PDF document text
- http://ctkupavna.ru/upload/file/fogusaze.pdfIn PDF document text
- http://furkansigorta.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160c02c9891848---rupugito.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=jee+2020+question+paper+with+solutions+pdf+allenPDF link annotation
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00011f30.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11F30 | 18084 bytes |
SHA-256: 93152457447d9bc1de6b2ef3632326d3533a3122b181ec0254ab910183352545 |
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font_01_sfnt_off00014eaa.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14EAA | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off000166bb.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x166BB | 16488 bytes |
SHA-256: d0e02ea597b059e12c640018e4c0b859d2fbe31b167f59dc9fd0dc6423c65742 |
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font_03_sfnt_off00017da8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x17DA8 | 11160 bytes |
SHA-256: 6f8d47bf93d130c8ba47a3105c590c3a45e444f4c95869788ea6ad4122e1f020 |
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