MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous links, many pointing to compromised WordPress sites and disposable hosting, indicating a link farm designed to redirect users. ClamAV and ML classifiers flagged this PDF as malicious, specifically as a phishing trojan. The presence of external URIs and link farm heuristics strongly suggests an attempt to lure users to malicious or compromised content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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 http://zpb-maciejewski.pl/upload/fck/file/pobiwinuraz.pdf
- https://kolodezrus.ru/wp-content/plugins/super-forms/uploads/php/files/5a3c6584a1af9c959419923aeaab6f3a/68095839565.pdf
- https://gearforfree.com/wp-content/plugins/super-forms/uploads/php/files/jjjpo03ri5r7ial1neqjboudb1/nixavaxexebovovosew.pdf
- https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/1273167beed2664d9ac4392d98406aec/redefewezokufok.pdf
- http://melissajacksonmd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a992a610584---zexuwunenibum.pdf
- https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/f4uc13ras8fkfk3edvk2cqrg94/tazebuj.pdf
- http://trans-serwis.com/userfiles/file/sariropowiz.pdf
- http://af.ssla.ru/images/fornews/files/96051429452.pdf
- http://macabrey-luthier.fr/data/Files/vipaboxemutatebi.pdf
- https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/16076b35d89089---22759077715.pdf
- https://wulf-sanitaer.de/wp-content/plugins/super-forms/uploads/php/files/9s5o91s180l3i75tca76hu829b/88545986572.pdf
- https://www.hagensmarketing.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b483063771e---18049513614.pdf
- http://edgecs.net/documents/wezupozedivupufuvutis.pdf
- https://traveletrust.com/basefile/traveletrustcom/files/25926718881.pdf
- http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c5809205f8---pefitoraf.pdf
- http://www.viksexteriors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bec12b17293---xomowubidofiw.pdf
- http://asiancfea.org/userfiles/file/tikevenokukutob.pdf
- https://agrachoff.ru/wp-content/plugins/super-forms/uploads/php/files/7c80aa9317fa75937378c2c5108a65dc/veridorosoti.pdf
- http://recruiters-zone.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b055ed9f380---88426744740.pdf
- https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e4fe8699d3---wijixuzusenip.pdf
- https://efnnma.org/files/file/zexifona.pdf
- https://progin.ch/ckfinder/userfiles/files/28522941304.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=section+3+of+child+labour+prohibition+and+regulation+act+1986
- http://irodori.kir.jp/files/file/86578965076.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_off00010ca6.bin5672230be448c97b08b344c78f58664c1591bb4be39c6232c3ba853676d7bcc0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10CA6 | 11816 bytes |
font_01_sfnt_off00012862.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12862 | 16792 bytes |
font_02_sfnt_off00014074.bineda81a0651e3388f47fd649f1687a3474fc629c7d06d0197e6552cec4e9c791a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14074 | 17560 bytes |
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