PDF malware analysis — malicious · bfbc097115468d07

MALICIOUS

PDF

68.5 KB Created: 2020-12-24 14:44:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 347deed4ae6bfa006a12a4fc454b2c24 SHA-1: d00d0fdba515ef296faf1ddbede60199d9054942 SHA-256: bfbc097115468d07b5f142033c479e7562c72f910764120060e53974d8632770

156 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document contains a large number of external links, identified as a link farm, with one prominent URL being traffnew.ru. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and heuristic firings suggest it's designed to redirect users to malicious sites.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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://traffnew.ru/strik?utm_term=krita+download+ipad
- https://cdn-cms.f-static.net/uploads/4446762/normal_5f9e5087ef9e8.pdf
- https://cdn-cms.f-static.net/uploads/4368497/normal_5f8acbb3e7fb7.pdf
- https://cdn-cms.f-static.net/uploads/4479675/normal_5fb82de1a5038.pdf
- https://cdn-cms.f-static.net/uploads/4465144/normal_5fb7203cc80fd.pdf
- https://lurefeti.weebly.com/uploads/1/3/4/6/134683691/mogufakitipi.pdf
- https://cdn-cms.f-static.net/uploads/4426677/normal_5fae0fe5a51e7.pdf
- https://cdn-cms.f-static.net/uploads/4481067/normal_5fdac15a86e4d.pdf
- https://static.s123-cdn-static.com/uploads/4459628/normal_5fcc014c47e6e.pdf
- https://wivixape.weebly.com/uploads/1/3/4/8/134897282/kasapavipamofepoxaw.pdf
- https://lesesaxaxutetu.weebly.com/uploads/1/3/4/6/134613106/7608842.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://uploads.strikinglycdn.com/files/e2cea6df-967c-4ae1-b2b9-ca09b790cd86/24234454106.pdf
- https://s3.amazonaws.com/jivamubug/5859390823.pdf
- https://s3.amazonaws.com/zevutebulaworel/86044938800.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_off0000cf5a.bin` `63e1373138116e6a5b8bb9a2c87f15a5ee10c8762e042e6cb0c027fe139f9f79`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCF5A	4836 bytes
`font_01_sfnt_off0000dff2.bin` `0902c3bea6a910b00dd92e8ef7bc389e28c8b6b8fa9993cb0d6495caa8da1afa`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xDFF2	10872 bytes

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