MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The document contains numerous links to external sites, many of which appear to be part of a link farm designed to host malicious PDFs. The 'SE_CALLBACK_LURE' heuristic indicates the document likely prompts the user to make a phone call, a common tactic in phishing and tech-support scams. No scripts were extracted, but the overall structure and URL patterns suggest a phishing attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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 https://catamma.ru/uplcv?utm_term=youtube+music+vanced+apk+android+4.4.2
- http://donghozibistore.com/luutru/files/mezugowufupitul.pdf
- http://www.grundys.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b0c48996165---rexoxumow.pdf
- https://agroadvanced.com/app/webroot/newsletters/editor/files/bolokupoputuzivutij.pdf
- http://cohn-vossen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16100ee8d41a40---masetopobafapez.pdf
- http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/16087cb2e62fd9---58950612528.pdf
- https://trucraftsmanship.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1c63a88db1---95920154319.pdf
- https://nirmalujjwal.com/public/ckfinder/userfiles/files/51811963091.pdf
- http://zonwering-nederland.com/ckfinder/userfiles/files/bulufodaxirotuv.pdf
- http://aweibel.com/Photo/file/mifikowanoparomeluwel.pdf
- http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/160a4c46fb64da---4308106980.pdf
- http://artospace.com/pics/file/pidatedakalimavenaro.pdf
- http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f6ced4de53---54944681975.pdf
- https://goodline.by/userfiles/file/bodurewirunenidagezafora.pdf
- https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/494eebfa4f991f75233d9a223400026b/57222714280.pdf
- https://ceccarmehedinti.ro/userfiles/file/65148120303.pdf
- https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608066f6682b4---9871717008.pdf
- http://dj-venci.com/uploads/pages/files/16841170964.pdf
- https://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//maborupunifuvinewaxo.pdf
- https://pima-alarms.net/slicice/file/lamaxabop.pdf
- https://baobihungphu.com/media/ftp/file/vetima.pdf
- http://agama-rc.com/upload/files/bozavezi.pdf
- http://www.armstrongre.com/files/files/68484714393.pdf
- http://thestarbusan.net/FileData/ckfinder/files/20210723_87AFD53F89B6AC19.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_off0000fa77.bin374a27c5f1cac786102f758f9529df242758cd0b1af1f98221c866ff36fb6359 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFA77 | 11276 bytes |
font_01_sfnt_off000114d1.bin72f23b1e5185cd778fffa6c85424244fb48b77fa657124dd23515e91bb3b032b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x114D1 | 16888 bytes |
font_02_sfnt_off000140b5.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x140B5 | 16792 bytes |
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