PDF malware analysis — malicious · 1df2368a1d4e58fb

MALICIOUS

PDF

70.5 KB Created: 2020-12-28 09:46:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: d34719bcf60b33c00244f01a1753bba2 SHA-1: d1666d5984957867d5e1505cb4541ad20d7a2fdf SHA-256: 1df2368a1d4e58fb4bfd0436b56e3bf53bc5931606ee397abda664a80bc55a31

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous external links, including one to 'trafftec.ru/strik', suggesting a link farm or redirection to a malicious site. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or a scam. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users.

Machine Learning

Nyx PDF Classifier malicious score 0.9997

Heuristics 5

Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM

Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The 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.
Embedded URL info EMBEDDED_URL

One 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://trafftec.ru/strik?utm_term=matrix+live+wallpaper+for+windows+7
- https://static.s123-cdn-static.com/uploads/4443814/normal_5fdf0f4dad44f.pdf
- https://cdn.sqhk.co/jagavibejabe/0jedAHe/business_plan_template_uk_doc.pdf
- https://cdn.sqhk.co/zoboxoba/hyjgHlE/velanutafedefuv.pdf
- https://cdn.sqhk.co/nosuterib/ceHif8E/ice_hockey_flipper_ball_shots.pdf
- https://static.s123-cdn-static.com/uploads/4470399/normal_5fc45e8d485aa.pdf
- https://pilolekolaf.weebly.com/uploads/1/3/4/6/134655903/5ebc781444e587.pdf
- https://cdn-cms.f-static.net/uploads/4402297/normal_5fb810a6013c5.pdf
- https://cdn-cms.f-static.net/uploads/4458625/normal_5fa979a2d579c.pdf
- https://cdn.sqhk.co/wuluzajiroz/8iahehj/tuwarorekijilejimunuvase.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/kujesulad/apes_movie_in_tamil_free.pdf
- https://s3.amazonaws.com/dusubonifu/brain_teasers_worksheets_with_answers.pdf
- https://s3.amazonaws.com/pazifetanegapu/81173230905.pdf
- https://s3.amazonaws.com/tawovojo/gekiguvezedib.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://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000d884.bin` `26f4aecc0bdb92abf2de84d21d9749891bc89bd5de27ccf95ec4a900ffcaa9c6`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD884	5340 bytes
`font_01_sfnt_off0000eaee.bin` `c5ebcd8da9e63a044d1376dab88592f59e0e5c00190061f95dcb4af770f94e10`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEAEE	10064 bytes

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