PDF malware analysis — malicious · 250fdd6600325d19

MALICIOUS

PDF

73.8 KB Created: 2020-11-24 16:42:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04

MD5: 62169099b1605a5809a709b6430bd5fb SHA-1: 267efe5ed7ab5ff542c77810695f1dd9e554fa4a SHA-256: 250fdd6600325d19c1494f28ed4ba31c2458f4d230e5b79069bc614a09c3e1cc

154 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.9981

Heuristics 4

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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.
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/strik?utm_term=wheat+free+snacks In PDF document text
- https://cdn-cms.f-static.net/uploads/4401985/normal_5fab1c6d3be9e.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4467581/normal_5fb366b140ec9.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4465701/normal_5fbcf5404e60c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4375095/normal_5f8b50fd3fd7c.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4379961/normal_5f90f85753866.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4366645/normal_5f8ebf4eab74b.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://s3.amazonaws.com/tozaduliwubega/bebisev.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/ca77fc69-f1ed-4438-bc2a-aa86974464de/fedepogededorojuli.pdfIn PDF document text
- https://uploads.strikinglycdn.com/files/4c55d2ef-4829-4837-9c10-c82e42fc87bb/action_racing_collectibles_price_gui.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000e4ff.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE4FF	5012 bytes
SHA-256: `7538dd8a5dba2a6de51f1c6adbe8424e5a32cfa6b0cd52b85dead20ec2eb9ffd`
`font_01_sfnt_off0000f619.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF619	11076 bytes
SHA-256: `2d2de20235d8b5c3d599b24f2fe119bcfd4ffc21c776cb0343972a973c1542cd`

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