MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs that point to compromised WordPress sites, likely serving as a distribution point for phishing or malware. The presence of multiple external URIs and link farm heuristics strongly suggests an attempt to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9993
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://krisoc.ru/uplcv?utm_term=unicellular+and+multicellular+organisms+ppt
- http://rufullthrottle.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ab6801fd9b---kanewutuze.pdf
- https://elpmarketing.ca/wp-content/plugins/super-forms/uploads/php/files/c80684672a7f2b688d9fc582c54e3e59/27623832440.pdf
- http://salkim.com/userfiles/file/65982641225.pdf
- https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/e4a8b3e1a727fac0144cb49a7d67dae9/zuwoxesuromoxunevipu.pdf
- http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c6e46308785---7034614702.pdf
- http://herodumpsterrental.com/wp-content/plugins/super-forms/uploads/php/files/c00ea7670f1edf797f4fc33df49cf571/34555961574.pdf
- https://www.tangelo.no/wp-content/plugins/formcraft/file-upload/server/content/files/1607a8baa0b6ad---sidiru.pdf
- https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/6a363670285357569edacfb2f45dd4af/70601197917.pdf
- https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/160c4617a5fda1---67410745232.pdf
- http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160aad7fb44e6c---70550512400.pdf
- https://cursosgratuitosonline.es/wp-content/plugins/super-forms/uploads/php/files/j51gem5o5qv86u0ujgaecdo7b4/tedivowozex.pdf
- http://erkerlaender.de/wp-content/plugins/formcraft/file-upload/server/content/files/16071bed7368e3---72809637852.pdf
- https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607ae1e7a6683---ditanuluromufu.pdf
- https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/a2e3976988221767ea8e8d38cacb35c8/jegezimegojuvalowuxejimi.pdf
- http://amoy-art.com/Upload/file/sidami.pdf
- http://www.orarestauratorisaf.it/wp-content/plugins/formcraft/file-upload/server/content/files/16086be526d065---lufejafimubepejex.pdf
- https://xn----8sbaavnccwq4am.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/bb6583b618de20505d6545291ff8a22f/dejovipovatujor.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_off0000b3b8.bind5258ea578bb2fcb263e50c9e870a56503d8d989cb1585a29d2e30046e9db47e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB3B8 | 16600 bytes |
font_01_sfnt_off0000de4f.bin11e99b8c9748833a27ec4eda595f286bc8b929007b2b6a3c719f67a7d2014cf5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE4F | 10964 bytes |
font_02_sfnt_off0000f78c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF78C | 16792 bytes |
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