MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The 'SE_CALLBACK_LURE' heuristic indicates the document attempts to trick users into calling a phone number, consistent with callback phishing or tech-support scams. The presence of numerous links to compromised CMS upload storage and disposable hosting further supports a malicious intent, likely to host malicious content or redirect users to phishing sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
Heuristics 7
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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://xperion.hu/wp-content/plugins/super-forms/uploads/php/files/7e25ac07611f6cd205ca66ea9ec9a1c9/dedatipezejegixagig.pdf
- http://minerva-collection.net/files/files/jiranuwuboruwixezugurup.pdf
- https://engineeredrepinc.com/wp-content/plugins/super-forms/uploads/php/files/464876b2d072d358fb0eb0835d4f5996/61788091976.pdf
- http://vinabomi.com/uploads/userfiles/file/26575629224.pdf
- http://galantemontagnana.it/ckfinder/userfiles/files/nifojuraku.pdf
- https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16089cbd069251---jevowuli.pdf
- http://themultifold.com/wp-content/plugins/super-forms/uploads/php/files/k5uc8el47d6kr4av3lkjdkrq01/xawalimupuduposevuwa.pdf
- https://aliencosmicexpo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095f651ba876---14484554506.pdf
- https://psg66.ru/admin/ckfinder/userfiles/files/pilivuxusugoj.pdf
- http://daisytalavera.com/userfiles/files/gapegedagobige.pdf
- http://urbancollab.com/userfiles/Proj_Name//files/72433782028.pdf
- https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/b92df73528b9d1dde6f767aba3958978/76085778114.pdf
- https://calmoinc.com/upload/editor/file/metirinavifidaporadumax.pdf
- http://eprdel.cz/userfiles/file/61800419865.pdf
- http://cityhelps.org/clients/6/61/61afa7a028a8e04f14432b0fece6f2b0/File/30524787810.pdf
- http://festivaldeliteraturadepereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cfe7051f13---puzek.pdf
- https://www.baptistenhardenberg.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb6213b534---33540695980.pdf
- http://ecandrychow.pl/Image/files/87879519808.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=cost+price+meaning+in+tamil
- 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_off0000fb0f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFB0F | 16792 bytes |
font_01_sfnt_off00011321.bincd2f10df6262663d9085057f8b28b98f299070172a92b52c47cabba31105bfa9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11321 | 19320 bytes |
font_02_sfnt_off000145d8.bin8832f21527f2b89f6a00b2b87ee4f799de239733f24123efff6f2bbfd2d48b3d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x145D8 | 10748 bytes |
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