MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous links pointing to compromised WordPress sites, many of which host other PDF files. This behavior is indicative of a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly support its malicious nature, classifying it as a phishing trojan.
Machine Learning
- Nyx PDF Classifier malicious score 0.9930
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 https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/50cdd3390ef565f2c8e136aec8dd4fb0/soxogidasafuwim.pdf
- http://chinalabware.es/d/files/43031484508.pdf
- https://thriveelearning.com/wp-content/plugins/super-forms/uploads/php/files/90b9a9b91f7518779549a98f632e87a5/90883662342.pdf
- http://vilaportugal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e246200ea9---kiwaxosizok.pdf
- http://rapet.hu/files/24480656743.pdf
- http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/16074497026927---wezomaza.pdf
- https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/eobq81gjrdt4t9fmh2botqt5db/97274489703.pdf
- http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/2a228njqau4pt74vv6olfuvlp5/40401493018.pdf
- https://interesttour.com/wp-content/plugins/super-forms/uploads/php/files/f3a6b6fdf64a394aaaa05302d1530931/lisunivexisomosozevuzub.pdf
- http://vinag7furniture.com/app/webroot/files/editor_upload/files/66987065162.pdf
- http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1607efdd575efc---zitanugatowumerowote.pdf
- http://kirakuramenandsushi.com/uploads/files/63393908771.pdf
- https://hightechrustremovers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a556a2afab9---dojobiv.pdf
- http://ebsenglish.net/_UploadFile/Images/file/2812273126.pdf
- http://qtjdb.com/UploadFile/2021/05/21/file/20210521_133433_103.pdf
- http://cityfate.com/files/files/29265198974.pdf
- http://skuplaptop.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160b33ac837daf---14101160342.pdf
- http://vietsonplastic.com/uploads/userfiles/file/42954387453.pdf
- https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/16081e118ea5b2---98842925180.pdf
- https://implant-drill.com/userfiles/file/84426821156.pdf
- https://www.abaco-engineering.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a79ec08a0dc---gakipe.pdf
- https://terminal.hr/userfiles/file/88766804060.pdf
- https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/f6eb73aaa8b3d7aaa844f769d6a456f7/pimawunogexuxeros.pdf
- https://sckprime.com/wp-content/plugins/super-forms/uploads/php/files/02803a382654956a40d0f3e32c3060b2/gudizerovarujekadufepakub.pdf
- http://kennyre.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e127911945---gakiveta.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/zMnd8XtcwSM/uplcv?utm_term=normal+vitamin+d+levels+for+adults
- 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_off00011ab5.binca83221195af395e75c4a7c8813c8d491ba9df71871b9a80dfe86c68e96e6c24 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11AB5 | 10656 bytes |
font_01_sfnt_off00013321.bina1c1243e0755e4c788f9bb6a5410bfc95317c550521deb5109e5314cc1e98271 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13321 | 17508 bytes |
font_02_sfnt_off000160d0.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x160D0 | 16792 bytes |
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