PDF malware analysis — malicious · 75142943795b97e4

MALICIOUS

PDF

69.8 KB Created: 2020-11-18 13:51:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)

MD5: 5493d944a008708850044d7cb3fc93e0 SHA-1: d2cfd69bb58c10b8c28972da62f452671500614f SHA-256: 75142943795b97e479bfc7cc55954233f7236586c66160976d54dbb46208b5cc

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://gettraff.ru/123?utm_term=white+water+summer'. This indicates an attempt to redirect the user to a malicious site, likely for phishing or malware distribution. The ML classifier also flagged this PDF with a high probability of being malicious. No scripts were extracted, but the presence of a malicious URL is sufficient evidence of a phishing attempt.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

Heuristics 4

PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK

PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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://gettraff.ru/123?utm_term=white+water+summer
- https://cdn-cms.f-static.net/uploads/4366015/normal_5f8d4dad7c710.pdf
- https://cdn-cms.f-static.net/uploads/4420019/normal_5f98197b0d392.pdf
- https://cdn-cms.f-static.net/uploads/4475729/normal_5fa99c24897b8.pdf
- https://cdn-cms.f-static.net/uploads/4393644/normal_5f9fa97f16ea0.pdf
- https://cdn-cms.f-static.net/uploads/4464521/normal_5faafb940a3d7.pdf
- https://cdn-cms.f-static.net/uploads/4414339/normal_5fa0d7358de6e.pdf
- https://cdn-cms.f-static.net/uploads/4419633/normal_5f983f148d658.pdf
- https://cdn-cms.f-static.net/uploads/4381751/normal_5f9e93a0c7512.pdf
- https://cdn-cms.f-static.net/uploads/4405202/normal_5f9846e29a5d8.pdf
- https://cdn-cms.f-static.net/uploads/4401973/normal_5f981254ceafd.pdf
- https://cdn-cms.f-static.net/uploads/4375700/normal_5f9eac9627c6d.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- https://s3.amazonaws.com/kujapomib/96034774572.pdf
- https://uploads.strikinglycdn.com/files/e0c890f1-54d5-4691-8485-cc41d4452764/xenevebigolerenefulaxomu.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_off0000d12c.bin` `78661d2fb86b4a8198627ef7b835b31bbd86b88f15dbbbd714037f283c89bde9`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD12C	5000 bytes
`font_01_sfnt_off0000e218.bin` `211872238c53918ec49646e4e2d85e527419a3fb318950dc6d4f62effa02134e`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE218	12440 bytes

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