MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
This PDF was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The numerous embedded URLs point to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The document body is heavily obfuscated and appears to contain junk data rather than user-readable content, further indicating a malicious intent to obscure its true purpose.
Machine Learning
- Nyx PDF Classifier malicious score 0.9998
Heuristics 6
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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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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://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/0934047ae96b21366bf9fb80f17c48a9/7160135015.pdf
- https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/c64e84c0b46e7720f53e4c869b08fdd6/pewezulirikoderesebuvuvu.pdf
- http://xn--clinicaquirogavilario-vbc.com/wp-content/plugins/super-forms/uploads/php/files/6cvso03kdi33llpb8qm71upi92/punodifemixitodowam.pdf
- http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160bb09853d093---39811649625.pdf
- http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081ce2c922f4---sulawezesurajogej.pdf
- http://cnzhongkui.com/fckeditor/editor/filemanager/connectors/php/uploads/file/240809113367.pdf
- https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/904ce627e60947a8d2e8d2bfef0080c2/90909586997.pdf
- http://2girlstrippin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609770f53709b---mubamiwejazeruxabolos.pdf
- https://dungcuruamui.com/wp-content/plugins/super-forms/uploads/php/files/dk1jthisl0otr4m35gap5qkqn7/32098471790.pdf
- http://stacjaregeneracja.pl/userfiles/file/57050020352.pdf
- https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/a20feec4581543d12471b7d44b417e9b/vivewow.pdf
- https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a40363044f1---3474245895.pdf
- http://wypelnienia.kratex.pl/wp-content/plugins/super-forms/uploads/php/files/3c00d351ca70b58775cdd445110906e9/61264822118.pdf
- https://www.simplythebestevents.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1608bae2e6423b---deboranipufoputiduxaluj.pdf
- https://michaels-limo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ade3c3d6a42---23296199254.pdf
- http://mai-colle.jp/userfiles/file/94896178169.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=dell+powervault+nx3100+manual
- 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://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000bc31.bin2ffc79f293599af690ba6f5115f29394c66236b3f3bd88322348ad1c58836c5e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBC31 | 5364 bytes |
font_01_sfnt_off0000ce7e.bin98bf5a17666b5b8db0a377ea9be774515aed05e9470095365e388d0192764bff |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCE7E | 11288 bytes |
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