MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file contains numerous links to external websites, many of which are hosted on compromised WordPress installations or disposable domains, indicating a link farm designed for malicious redirection. The ClamAV detection and ML classifier strongly suggest this PDF is malicious, likely serving as a lure for phishing or malware distribution. No scripts were extracted, but the extensive use of link farms points to an initial access vector via spearphishing attachment.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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://infrive.ru/uplcv?utm_term=lacie+rugged+thunderbolt+2tb+manual
- https://vakukh.ru/wp-content/plugins/super-forms/uploads/php/files/7f34ceec453c46b055cbca927e159e91/rirumol.pdf
- http://alexanderjamesbackcatalogue.com/userfiles/file/xobegafi.pdf
- http://rocb-ap.org/file_media/file_image/file/bovoxomakoj.pdf
- http://www.maoles.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b538dacaa4---kosamifokipubuxu.pdf
- https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d939484b75---vikarajizawemu.pdf
- https://gs-hemeringen.de/ablage/userfiles/files/zusoputudujozomanugejaka.pdf
- http://taeguektour.com/FileData/ckfinder/files/20210712_2051F64803AE9195.pdf
- http://hdurmuslar.com/images_upload/files/52002757399.pdf
- https://telenovella-bg.com/files/petagar.pdf
- https://coloreverything.love/wp-content/plugins/super-forms/uploads/php/files/04887f46c369427b45a6fa6f08598c45/17271766566.pdf
- https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/16086af4a9b2c9---70612844461.pdf
- http://sweethomedelivery.com/ckeditor/ckfinder/core/connector/php/uploads/files/3282018879.pdf
- http://tuttotop.com/userfiles/files/gamowuwezorakoduzowub.pdf
- http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/16dcv46f3ojf9a6n6466cid3q4/lolasulexudelutafig.pdf
- https://jamisonfurnace.ca/userfiles/files/sipoguk.pdf
- http://mosvag.ru/img/lib/file/bolowesowegesubaraw.pdf
- https://www.getfitcrew.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba7c330c29f---58992693178.pdf
- http://ardechetendancebrut.fr/userfiles/ardechetendancebrut.fr/file/31231007829.pdf
- http://craft-personal.de/userfiles/file/43631855088.pdf
- http://pb-book.com/user_file/file/kixuzewoxexivavonasifazuz.pdf
- http://www.kidnuri.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab18033fa2d---kexavi.pdf
- http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606efdbe9c5ae---bixolufotu.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_off0000f87e.bine709b29626054691f88d925446400959f74eda27e834340f17031ff95ec0fc05 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF87E | 10964 bytes |
font_01_sfnt_off0001118b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1118B | 16792 bytes |
font_02_sfnt_off0001299d.bin251f4d94776820189a09f9407e34436c4d13ab97f21a6429d1b94e5e2d00006e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1299D | 18452 bytes |
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