MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 User Execution: Malicious Link
The PDF contains numerous links pointing to compromised WordPress sites, indicating a link farm designed to host malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. The 'SE_CALLBACK_LURE' heuristic further supports a phishing pretext, aiming to trick users into interacting with the provided links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9932
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://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/160728dd640654---50230330544.pdf
- http://bi-acaovo.com/upload/files/45210830532.pdf
- https://www.explosivo.gr/wp-content/plugins/super-forms/uploads/php/files/581d36bb1e3d7d76f2ee3a1ebf0a6820/rovafoxe.pdf
- https://regalcabs.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16070402b8c273---rifokukida.pdf
- http://alliusie.com/userfiles/file/fibakit.pdf
- https://www.andrecampbell.ca/wp-content/plugins/super-forms/uploads/php/files/c3b52daf0dc9eb87cffe48354c44f154/zitokux.pdf
- https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/160bb56ca24d13---juredanunidizab.pdf
- http://51-lq.com/userfiles/file///89052847253.pdf
- http://antwerp-reefer-tournament.be/argt/files/lupeweginifozofebataj.pdf
- http://sieckultury.pl/wp-content/plugins/super-forms/uploads/php/files/302e2224a8f10b78116376f6def255e5/wigefurel.pdf
- http://neonyazilim.com/images/Media/files/21221880809.pdf
- http://eduomania.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fb8ef78dd9---rewinabuzuxagukem.pdf
- https://www.asahinafunnels.com/wp-content/plugins/super-forms/uploads/php/files/9bir6hr6c1bn0f7adngqnf3bms/semikaguxozodogunifuvez.pdf
- http://wsystem.sk/userfiles/files/63547167083.pdf
- http://www.uppld.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c3869734e6b---99038978449.pdf
- http://medicaldistri.com/ckfinder_files/files/61191005316.pdf
- http://philippinesroadshow.com/wp-content/plugins/super-forms/uploads/php/files/000c8ca1ffb9f13503720976f3f116bb/91519963414.pdf
- http://gat-asset.com/CKEdit/upload/files/dujigesemoxawurik.pdf
- https://vestol.bg/files/file/muzimuwisusulofepe.pdf
- https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/160de20b1bf58a---kuboxujukarafu.pdf
- http://aircond.md/upload_fck/file/15506572525.pdf
- https://growlocals.com/wp-content/plugins/super-forms/uploads/php/files/48de526775d8ffbdbe9832be9ad91bab/vopif.pdf
- http://sciencevier.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b478ee8275e---guvozadot.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=two+party+states+for+recording
- 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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e8cb.binbb352729c79a2fdaef1373bb0fbbe4bd5fc4a3a04f7b50b3be185f4d2cf0cb6f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE8CB | 10912 bytes |
font_01_sfnt_off00010216.bin00b1f632e8afe72716c8bcdb76b7901b56c060d1dc0f96f3f5c1b8373b85735b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10216 | 16140 bytes |
font_02_sfnt_off00011792.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11792 | 16792 bytes |
font_03_sfnt_off00012fa4.bin313251c349c951ee276ffa3c11c1cdb5aca3f875e2ebc105cc63114b295a5dfa |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12FA4 | 16920 bytes |
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