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 0.9853
Heuristics 8
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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://www.melodypods.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae20e04c73b---terajigorugetugupuxadog.pdf In PDF document text
- https://eseninternational.com/uploads/files/85339699009.pdfIn PDF document text
- https://mattweidnerlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e21cba5b71---8097943311.pdfIn PDF document text
- https://www.educazionesessuale-scuola.ch/ck/ckfinder/userfiles/files/sidumivejelip.pdfIn PDF document text
- http://accessibilite-salle-eau.com/ckfinder/userfiles/files/kiduj.pdfIn PDF document text
- https://aimhc.com/userfiles/file/13629467777.pdfIn PDF document text
- http://srihemkuntsahibfgp.org/hemkunt/userfiles/file/woxitizulofofezuluko.pdfIn PDF document text
- https://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ee941d9f3e---50873512145.pdfIn PDF document text
- https://www.asahinadigital.com/wp-content/plugins/super-forms/uploads/php/files/v0qo8e2tfbm8q7dj5kchrq7vfo/zotixumogizesiwadaro.pdfIn PDF document text
- http://connect-senior.ch/uploades/userfiles/file/10905948822.pdfIn PDF document text
- http://developmentassociationofnagaland.org/nbloom/fckuploads/file/2851778680.pdfIn PDF document text
- https://www.isgs.org/wp-content/plugins/super-forms/uploads/php/files/b689dc142573c970cdde1c2d8e204ed4/gujemekebosasagope.pdfIn PDF document text
- https://kachhiproperties.com/wp-content/plugins/super-forms/uploads/php/files/of5pdqf7ib3dq3d4c1o6o020k1/papewokovixodelilekej.pdfIn PDF document text
- http://www.koeru.eu/failid/file/wafosogivedigomapubajo.pdfIn PDF document text
- http://duonglaohanoi.com/userfiles/file/20315253962.pdfIn PDF document text
- https://rffsev.ru/wp-content/plugins/super-forms/uploads/php/files/1a9c030935f744f80385c18982a961bc/13846863480.pdfIn PDF document text
- http://nhs1966reunion.com/clients/1/1c/1ca8f1639ee69cd7806809ed3bcda9bb/File/losuruxenomus.pdfIn PDF document text
- http://kalmi.ru/upfiles/files/lopofunasisukijidumobinon.pdfIn PDF document text
- http://vibrosystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1609721e95da55---8599393776.pdfIn PDF document text
- https://gccpay.net/wp-content/plugins/super-forms/uploads/php/files/65576e49755094b69315f3e10035fa81/ximelogetofininapepex.pdfIn PDF document text
- http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a42164c03af---temogopunajogidarijoroza.pdfIn PDF document text
- http://rhondachem.com/d/files/jobosuz.pdfIn PDF document text
- https://www.sadcmedia.com/wp-content/plugins/super-forms/uploads/php/files/li43vt8smlu6cdsu9et758frgc/risabaga.pdfIn PDF document text
- http://woonhuislift.info/wp-content/plugins/formcraft/file-upload/server/content/files/160821d346d33a---sovupo.pdfIn PDF document text
- https://imagebeaute.fr/userfiles/file/46691070159.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=voov+meeting+apk+for+pcPDF 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 5
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
stream_007_off000167ea.bin |
decompressed-pdf-stream | PDF FlateDecoded stream at offset 0x167EA | 17980 bytes |
SHA-256: f8739840aafec5a4c75180064af7727c4837fe2d100989f586764900fefee215 |
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font_00_sfnt_off0000faf9.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFAF9 | 19284 bytes |
SHA-256: 209f345eaa2758193d21c7d164b9d3e22366c949a3f4bfc1ba651eaed1b30ae1 |
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font_01_sfnt_off00012be4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12BE4 | 2688 bytes |
SHA-256: 9a130951a291cd9bb0a397a879fce5fc13faa3b3cc1a31c8f2c143422cdccccc |
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font_02_sfnt_off0001371f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1371F | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_03_sfnt_off00014f36.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14F36 | 10736 bytes |
SHA-256: 84a1204ff2588f347c0ca3e833b82c08ff2c56a26f183d8da7c7157fbf7ca9d8 |
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