MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF document was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains numerous embedded URLs pointing to potentially compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users. The 'SE_CALLBACK_LURE' heuristic indicates the document likely prompts the user to call a phone number, a common tactic in tech support scams or phishing operations.
Machine Learning
- Nyx PDF Classifier malicious score 0.9936
Heuristics 7
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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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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 https://inwebjor.ru/uplcv?utm_term=rock+of+ages+west+end
- http://takeacode.eu/user/d41d8cd98f00b204e9800998ecf8427e/file/tupaxuvisulif.pdf
- https://shining4u.com/wp-content/plugins/super-forms/uploads/php/files/002552fac80dffbc1148eec12e104ec5/20219023196.pdf
- https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/16097c3f42891b---kugobakubefavuxamet.pdf
- http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/160807cd4a2dc9---40228972858.pdf
- http://anhuizpyy.com/upload_fck/file/2021-5-11/20210511081205154797.pdf
- http://anhuicrew.com/upload_fck/file/2021-7-2/20210702030449794864.pdf
- http://www.nomorcantikjoss.com/file/muzemo.pdf
- https://ludifrance.fr/userfiles/file/ramaxazimikutizuxisaj.pdf
- https://lawpropertyconsultants.co.uk/wp-content/plugins/super-forms/uploads/php/files/5di2g7qjgeejn1ti3m9shgklra/wudonuvikerelikefa.pdf
- https://www.truesdalepainting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fa855c49de---14291963736.pdf
- http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608b88aed9097---21300358909.pdf
- https://backcountryplayground.com/wp-content/plugins/super-forms/uploads/php/files/81a61b05698fd72000ead5b08a88c4aa/zezixumuto.pdf
- http://wphs69.com/clients/1/13/13dd0a1135c99f886ff4006aa3c820ba/File/wajunumuzeji.pdf
- http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160c28b4024b3e---nirorijajetekuladovanin.pdf
- http://bridgestone-ice-cruiser-7000.ru/ckfinder/userfiles/files/87467002084.pdf
- http://alda.pl/ckfinder/userfiles/files/vojixefe.pdf
- https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160a9360d02bbe---rufamipasunimijakaduva.pdf
- https://loctra.net/userfiles/file/85961469329.pdf
- http://ankurgroups.com/userfiles/file/27012685815.pdf
- https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/df842018b0e02a6251fe04d729e0eb57/dukimu.pdf
- https://www.hintonassociates.com/wp-content/plugins/super-forms/uploads/php/files/5aee74a70e4ee723822d00ea078a5339/12664579380.pdf
- https://www.taxiserviceh24.com/wp-content/plugins/formcraft/file-upload/server/content/files/16079887849404---60159576088.pdf
- http://elm3rad.comfile/90943434970.pdf
- http://pttaccounting.com/userfiles/files/81398283048.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_off000111dd.bin4e7f0739b4a55d12ff5dacd0e9582240f3eaf2484835a404a8d78b3bf7d3de1c |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x111DD | 17608 bytes |
font_01_sfnt_off0001404c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1404C | 16792 bytes |
font_02_sfnt_off00015863.bin2663a63abfe92171c55ac376227ea7de831bfd507331e50b61a0a4b2c0c4cebc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15863 | 10636 bytes |
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