MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous links to external sites, many of which appear to be compromised WordPress uploads, suggesting a link farm designed to distribute malware. The presence of a 'Password-protected archive handoff' heuristic indicates the document likely instructs the user to download an archive, for which the password would be provided, a common tactic to bypass gateway security. ClamAV detection further confirms its malicious nature.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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://laborke.ru/uplcv?utm_term=descargar+certificado+digital+en+android
- https://glass-haus.ru/wp-content/plugins/super-forms/uploads/php/files/7fc3a7d96aaec050390a5098bc83e02b/73225843882.pdf
- https://sainaudit.mn/File/ruziguxogusadinopadubedu.pdf
- https://szabobuszberles.hu/files/files/22669197794.pdf
- http://duocmyphamcongty.com/app/webroot/uploads/files/23566580032.pdf
- https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/3961b548c1d387dbef0b2a2c45964bee/rokolerudolumeruwari.pdf
- http://nuovojob.com/userfiles/files/romudavikoparidak.pdf
- http://homestationrealty.com/userfiles/files/64999680312.pdf
- http://globalfeedindustry.com/upload/files/tetozebu.pdf
- http://finemetal-cn.com/upload/files/lajomupifexamivalug.pdf
- http://sujitonweb.com/userfiles/files/96053615563.pdf
- http://archpiudue.com/userfiles/files/73089886383.pdf
- http://halongwave.com/userfiles/file/dusovuguxazabebazodoxewo.pdf
- http://www.hgbehringer.de/img/files/files/23337967034.pdf
- https://wfbulgaria.com/uploads/wysiwyg/files/65853161814.pdf
- https://houstoncoinclub.org/FCKeditor/file/paderelerelisadilitagux.pdf
- http://www.agrosystem.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/1613a2dbeec99d---jozasajuvek.pdf
- https://retentionstudentexperience.com/wp-content/plugins/formcraft/file-upload/server/content/files/16141819ebcdf3---80567644384.pdf
- http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/pev7d91nlv6n00mktcceh1heun/rorusopisuvisax.pdf
- http://husplaza.hu/editor_up/bafojupuvu.pdf
- http://elitakhealing.com/ckfinder/userfiles/files/vodufukizav.pdf
- http://www.bc-arman.kz/ckfinder/userfiles/files/gujari.pdf
- http://remproekt-m.ru/admin/ckfinder/userfiles/files/32692745594.pdf
- https://mindweave.co.uk/wp-content/plugins/super-forms/uploads/php/files/f4o5k31d7f6nkc6fdp3akkdbps/40910006487.pdf
- https://408of53crownstreet.com/assets/media/files/zirajisukaxosorusonusu.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_off0000d373.bin8dc9e26e2bef176a96ffb4746cff74ae17f74ba5b582587d1d6c5e1cbf03bfe8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD373 | 10652 bytes |
font_01_sfnt_off0000ebc6.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEBC6 | 16792 bytes |
font_02_sfnt_off000103d8.bina8a6170a7912afc777e82c5668dbd03e72a7b34e8dc0f4e91a68d2c52d93c371 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x103D8 | 18076 bytes |
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