MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external links, with several heuristics pointing to link farms hosted on compromised CMS uploads, suggesting a phishing or SEO-spamming campaign. While no scripts were explicitly extracted, the PDF format itself can embed JavaScript, and the presence of external links is a common tactic for delivering malicious payloads or redirecting users to phishing sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9928
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://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/52ffc6fa8aa33232bc9c408821a76f95/49330997107.pdf
- http://alphasigmaoverseas.com/userfiles/file/51359270122.pdf
- https://turismo-galicia.es/ckfinder/userfiles/files/wuvepepekunoxujide.pdf
- http://viaterrestre.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606c8d82b5811---zitumoxebomokaxo.pdf
- http://gentlemensquartersbarbershop.com/wp-content/plugins/super-forms/uploads/php/files/c7c270cd2b472b12cc2ac5349fa52335/97982469504.pdf
- https://naseeha.org/wp-content/plugins/super-forms/uploads/php/files/d3e5f199d74cde298a2fce7a5fb36540/52774276244.pdf
- http://espacioschillout.es/images/admin/file/xujanisake.pdf
- https://globalclassic.org/wp-content/plugins/super-forms/uploads/php/files/28sdgbtoqh7agmo72p295jm1r9/buxerumib.pdf
- https://loskutova.site/wp-content/plugins/super-forms/uploads/php/files/17396ac1a80518c6d0348ce6588cbf7a/bewanerol.pdf
- http://prabashproperties.com/ckfinder/userfiles/files/52907842630.pdf
- http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160b35ed6365e1---53643154180.pdf
- https://webtechnocrats.com/upload/file/10693043024.pdf
- https://argentinaproduct.com/ckfinder/userfiles/files/98365111756.pdf
- http://didula.com/img/file/pexakejer.pdf
- http://telegid.tv/userfiles/files/30361729082.pdf
- http://bkmarine.net/ckfinder/userfiles/files/1625268979.pdf
- https://bbpartner.cz/userfiles/file/70688033843.pdf
- https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/20df586a707bfaaca4d942aabb79a9e4/gijiwor.pdf
- https://unique-u.biz/images/uploads/file/donemakesonodivakigazopum.pdf
- http://www.julitolaschools.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608bf8a2a21b5---lomewakajijiv.pdf
- https://www.mii.net/wp-content/plugins/super-forms/uploads/php/files/46ed18e667ec64050a86fc06d53865ef/4135931941.pdf
- https://workinhotel.com/upload/fckfile/sezezuwego.pdf
- https://sbufficio.it/file/bezesesazuroxi.pdf
- http://hzdsbg.com/uploadfile/1621426727.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/1KS0DP0cxss/uplcv?utm_term=high+temperature+on+enzyme+activity
- 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_off00011b06.bin13e5cc8dbc46d5c7b94279bfa20ca313ae3bafd2bda6c7ac0bcfe71354b3e773 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11B06 | 19024 bytes |
font_01_sfnt_off00014ca5.bin43804aba9ae0e50c727da5136ba79c25a4404b5dfeec99ee723716b17a7ef305 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14CA5 | 10936 bytes |
font_02_sfnt_off000165d0.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x165D0 | 16792 bytes |
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