MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, with numerous URLs pointing to compromised WordPress upload storage and disposable hosting. These links likely serve as redirects to phishing or malware distribution sites, aligning with a spearphishing attachment attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://lsp.od.ua/wp-content/plugins/super-forms/uploads/php/files/umqk1jgmv94261hfbjlpeve2u1/69806700668.pdf
- http://xn----8sbaqfskngn1qi.xn--p1ai/userfiles/file/faresalopapapilabus.pdf
- http://tutek.eu/userfiles/file/jadoke.pdf
- http://sooclose.eu/upload/File/remifetedubarokafo.pdf
- https://quaint-house.com/74053910974.pdf
- https://vaytieudungtragop.com.vn/wp-content/plugins/super-forms/uploads/php/files/f01lla8c9uje6mchfojk6dg3up/26652199031.pdf
- http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0a981c06a6---lukevitine.pdf
- http://dgjinhak.kr/DATA/upload/files/202105290850578883.pdf
- https://www.perfumista.co.uk/wp-content/plugins/super-forms/uploads/php/files/22048097134d9ab51977521b692e42f3/47302835595.pdf
- https://akarchlight.com/wp-content/plugins/super-forms/uploads/php/files/1008067064610991270091fa3945e64f/31809191066.pdf
- https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160dddca5a2b75---33216641893.pdf
- https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160a46fce2e881---ragemukimuzojodonupe.pdf
- https://bnbcostaverde.it/userfiles/file/vuzano.pdf
- http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a401e2174c6---xuvakewuk.pdf
- https://avvocatoboretti.com/file/xixofagewoka.pdf
- http://kondicionery-ivanteevka.ru/upload_picture/file/furediv.pdf
- https://indacphuc.com/wp-content/plugins/super-forms/uploads/php/files/00u4e6mnhu80mqiv4obn5477sg/20360097187.pdf
- https://personalloan2u.com/wp-content/plugins/super-forms/uploads/php/files/96dddff06ca86c6a3aea7282bf95ebb3/dufodufizibuneb.pdf
- https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c86051380b0---68216355370.pdf
- http://plenaadoracao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d56d0584a66---dokimeworogadoza.pdf
- https://eslms.com/userfiles/file/84499144747.pdf
- http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b25f3e01897---binonejelukoxopula.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=interjection+of+sorrow
- 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_off0001095f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1095F | 16792 bytes |
font_01_sfnt_off00012171.bin9231919729736da5aa4ffb97b8621c69e2466537cca585270ad8d8ac42e4d6de |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12171 | 17596 bytes |
font_02_sfnt_off00014f87.bin937554d6fc01a988a9f3bc41f540efe4ff1a8a3576f473bc09275dae05af6da8 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14F87 | 10288 bytes |
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