PDF malware analysis — malicious · 41c0812941e4ed38

MALICIOUS

PDF

82.5 KB Created: 2021-01-11 21:17:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27

MD5: 4f69f53577edd62ec435aacf09e6b81f SHA-1: e8e472fb3558cdbbd083b133acde900972292602 SHA-256: 41c0812941e4ed388b814808ddcd88480e6868f94e92e95210c8ea93cef353f3

96 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains an embedded URI pointing to a suspicious domain, which is a strong indicator of a phishing or malware distribution attempt. The ML classifier and ClamAV detection further confirm its malicious nature. Although no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to redirect users to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

Nyx PDF Classifier malicious score 0.9998

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
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://trafffi.ru/123?utm_term=martin+senour+automotive+paint+color+chips PDF link annotation
- https://static.s123-cdn-static.com/uploads/4425929/normal_5fc775d409096.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4419205/normal_5fd9d651c7662.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4464056/normal_5ff3573220264.pdfIn PDF document text
- https://cdn.sqhk.co/vekasurox/1sMqjfJ/70_diy_pallet_ideas.pdfIn PDF document text
- https://static.s123-cdn-static.com/uploads/4377697/normal_5fec165e23073.pdfIn PDF document text
- https://fotobuwab.weebly.com/uploads/1/3/4/3/134368258/watel.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4371258/normal_5fa65d4583180.pdfIn PDF document text
- https://tofisijola.weebly.com/uploads/1/3/4/8/134863845/de7f557b16.pdfIn PDF document text
- https://cdn-cms.f-static.net/uploads/4404750/normal_5f9e846d0f61f.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/samopakamefap/write_a_bio_about_yourself_template.pdfIn PDF document text
- https://s3.amazonaws.com/zuses/bridge_diode.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_off0001085d.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1085D	5236 bytes
SHA-256: `4909a7718ceebc8ada0e94d2596e1b34ed8bafeb46ffad6373d625eb4ac5b6f4`
`font_01_sfnt_off00011a11.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11A11	10500 bytes
SHA-256: `6d9b24ce4e99d437f0d1a4fb12daeeb6beffee759a5b052415c61e8d8665afe1`

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