MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains numerous embedded URLs that point to compromised WordPress sites, indicating a link farm designed to redirect users to malicious content. The ClamAV detection and ML classifier strongly suggest this PDF is a phishing or malware distribution vehicle. The presence of multiple external URIs and compromised CMS upload links reinforces the malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9922
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://krisoc.ru/uplcv?utm_term=ph+calculation+worksheet+answers
- https://robinio.de/wp-content/plugins/super-forms/uploads/php/files/5611dg2lueusoma080j36a33f8/24995946740.pdf
- https://mariellatriolo.it/public/file/13429524754.pdf
- http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d379a8d245---vefesesekoduzomur.pdf
- http://www.electricman.in/demo/frontend/web/uploads/files/51720903951.pdf
- http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e443d5642c---93178498919.pdf
- https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/1b75129610dfda437a439b533d2caf24/69297791982.pdf
- http://pvsystreports.com/wp-content/plugins/super-forms/uploads/php/files/am808mihodtsu79l9vgrjrb2a6/felenujagimuxapedutub.pdf
- http://passaicvalleyclassof1957.com/clients/44362/File/wixamafiruvonepokugelux.pdf
- https://www.aserspa.net/wp-content/plugins/super-forms/uploads/php/files/f28a6olvv5i4btfkd1b43tkfss/ludazek.pdf
- https://ohligschlaeger-berger.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609f6b4ce5290---vaxokefukenira.pdf
- https://biothiennam.com/media/ftp/file/gakisekuna.pdf
- https://workinhotel.com/upload/fckfile/tonejinepolitexazadebaris.pdf
- https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093c88a828cf---37721767458.pdf
- https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/16082480ccd0d7---93467770239.pdf
- https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2938c61d46---72728115770.pdf
- https://expeditions-travel.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d0e0fa0102---bibonafuxilusunenivumuxer.pdf
- http://erbamedica.org/userfiles/files/nijakezupanadul.pdf
- https://bizdrive.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/160b27e3685530---62833857488.pdf
- https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/b38249a7e613195d5e16346056c520e2/44384358577.pdf
- http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609d47bf14a86---ralofunezepa.pdf
- http://www.hcibatiment.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16080caac33846---wavop.pdf
- http://vivatbacchus.hu/files/file/93408702013.pdf
- http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/cct2epgu1gp098v1lqo080mgp7/zejuvifar.pdf
- https://www.dolphinrfid.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b88ee82e37b---89515957353.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000dd6a.bin9ac73b380d8521821d706b881f12dd7c8754e466a1029bec6ceb54c687688a30 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD6A | 10604 bytes |
font_01_sfnt_off0000f5b2.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF5B2 | 16792 bytes |
font_02_sfnt_off00010dc3.binfcca37035df06e555c2991ff65faa0e8497ca6423bee408ebc46b3aef925b516 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10DC3 | 16144 bytes |
font_03_sfnt_off0001233e.binaf0d0ec05b0a7fe9732d150a8ab8a60b8cf221da4c4e5cc3b586db5cb42272ac |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1233E | 17200 bytes |
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