MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
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 0.9905
Heuristics 7
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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 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://bettynblue.com/upload/fck_img/20210625/file/zosuzozonolagukujijafol.pdf In PDF document text
- https://digireg.nz/upload/monenejojixijumakibaxat.pdfIn PDF document text
- http://angelofthewinds.org/ckfinder/userfiles/files/48324598277.pdfIn PDF document text
- https://www.inter-tube.co.uk/wp-content/plugins/super-forms/uploads/php/files/b678dd00ae54bb022794006526b2df4a/kotemolivazin.pdfIn PDF document text
- https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ed4ed60dd8---ginowopokenudikixedo.pdfIn PDF document text
- https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072b8268fef9---56951370592.pdfIn PDF document text
- http://poltinka.ru/userfiles/file/8589089062.pdfIn PDF document text
- http://www.leposeur.fr/site/upload/ckfinder/files/33372619242.pdfIn PDF document text
- https://fid-data.fr/app/webroot/uploaderfiles/41550995163.pdfIn PDF document text
- http://www.pirac.org/wp-content/plugins/super-forms/uploads/php/files/6fc0e17dbe08cf64c122ad9dd6feffcc/82656377459.pdfIn PDF document text
- http://mn-print.ru/ckfinder/userfiles/files/pejejufusigesilit.pdfIn PDF document text
- https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/pmfelqokb31l80qvi0rbjbpmg5/81885349406.pdfIn PDF document text
- http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160c0b8d6232a7---49614755273.pdfIn PDF document text
- https://dianthusindustrial.com/resimler/files/97979603705.pdfIn PDF document text
- http://ketoanaca.com/uploads/image/files/48966739920.pdfIn PDF document text
- http://intrinhgia.com/admin/webroot/upload/image/files/vomapinegilixasorixo.pdfIn PDF document text
- https://psychotherapie-coeppicus.ch/userfiles/files/nabibajuvunafufotijel.pdfIn PDF document text
- http://enotecagaribaldi.it/userfiles/files/bejigizamowelini.pdfIn PDF document text
- https://qualitylightsolutions.com/wp-content/plugins/super-forms/uploads/php/files/a0a0446f3ecbfe59cc4bbd6175b9bfcf/35299849998.pdfIn PDF document text
- http://antifftech.com/uploadfile/file///2021081807331284.pdfIn PDF document text
- https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/160d18542713bc---44080277.pdfIn PDF document text
- https://investmentskillsgroup.com/images/userfiles/file/xigajafojimazuza.pdfIn PDF document text
- https://dolnoslaskialarmsmogowy.pl/imgturysta/files/91981851574.pdfIn PDF document text
- https://bentzendesign.se/wp-content/plugins/formcraft/file-upload/server/content/files/1608e5f7a314bd---digosoxidezupuveluf.pdfIn PDF document text
- http://elmbbq.com/uploads/files/69977365089.pdfIn PDF document text
- http://dichvugiayphep.net/hinhanh_fckeditor/file/23654311146.pdfIn PDF document text
- http://dj-venci.com/uploads/pages/files/mumuxegededakujidurategus.pdfIn PDF document text
- https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=class+10+physical+science+book+pdf+downloadPDF 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 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e2a4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE2A4 | 19116 bytes |
SHA-256: 49221dea45a3d51e981cd53c11c5378e806a864c815fb774015d4e9107e5fb68 |
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font_01_sfnt_off00011493.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11493 | 11156 bytes |
SHA-256: bd9f0565512f15ba6f560be9a5a4ad87260ff2cc7ec613efe1f88bad102cbe78 |
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font_02_sfnt_off00012e7b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12E7B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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