MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF was flagged by multiple heuristics as malicious, including a critical ClamAV detection and an ML classifier. It contains a link farm pointing to compromised WordPress upload storage and other disposable hosting, suggesting a phishing or malware distribution lure. The presence of external URIs and the nature of the heuristics indicate the file is intended to redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9983
Heuristics 6
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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 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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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 https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/48566798e099a6186e92a36d29f8624e/89167736724.pdf
- http://westernmaki.com/uploads/files/selepuxebibexuriranalax.pdf
- https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/4629mj0cn3pg4bfrjhtas4l3r1/xavugo.pdf
- https://www.kiteschule-eckernfoerde.de/wp-content/plugins/formcraft/file-upload/server/content/files/16093f7ee8ce35---kadixitepakuweluw.pdf
- https://divinenine.net/userfiles/file/40423011234.pdf
- https://drivingschoolofnorthtexas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c1605563e7e---34065729550.pdf
- https://premiumvipbusiness.com/wp-content/plugins/super-forms/uploads/php/files/2bc9c66c8b74bca8b61b8808566634f1/japojafudufufiforoliv.pdf
- http://konditsionery-reutov.ru/upload_picture/file/vofabuxuzenetokezevuta.pdf
- https://www.golaw.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a9fb6728087---4219199238.pdf
- http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/e0rgjlbbg66go3p2cbpnvlq3nl/bujam.pdf
- http://www.manorbymajor.com/userfiles/files/50749337712.pdf
- https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/99dbotmq68g0ghvdkdk3cfibg9/lomivedelu.pdf
- http://lussoleathertiles.com/test4/EDITOR/example/v2/userfiles/file/59960255729.pdf
- https://postscriptproductions.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e8976d3f97d---zadunin.pdf
- https://aptitudeclass.com/ckfinder/userfiles/files/kolofumuveno.pdf
- https://trunglamdecor.com/uploads/userfiles/file/demolugumanodal.pdf
- https://makemycake.gr/wp-content/plugins/super-forms/uploads/php/files/u0lj25lc91kd6aeoeblcg7flc6/vimifiparenusunug.pdf
- https://parfumzone.ro/files/file/18017055807.pdf
- http://iowatriallawyer.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/xopamobidezebu.pdf
- http://www.ibadirect.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c86a4d285c---95707845625.pdf
- https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cad1e84724---pixuguvavijegi.pdf
- http://chixue.com/uploadfile/file/20210603100015.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=introduction+to+electrodynamics+solutions+4th+edition
- https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/1d402fdd1c4e5a79f11a448bdbed763a/budufipaf.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000ca55.bina9f3af78d1d7ef3eec0713e5ffb9feac608ea91db772f283a5afc84f01616fee |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCA55 | 10876 bytes |
font_01_sfnt_off0000e359.bin5102388d6da9a5fe7e6f297ede3ca5b0af089ec0d89d7fabd8bac51fc63ec0f8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE359 | 16388 bytes |
font_02_sfnt_off00010db6.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10DB6 | 16792 bytes |
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