Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f74e9e0e29fc996…

MALICIOUS

PDF

65.0 KB Created: 2020-11-25 00:18:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: f333aef392e7a3b21abfedbf5b366815 SHA-1: 13a9ab3fc6816efa7e1469c79c7ecdb493580479 SHA-256: 7f74e9e0e29fc996fa1b09d019e863ae81e852ea4ab9e8e253c0c7854394a914
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and a machine learning classifier. It contains an embedded URI pointing to 'https://traffset.ru/123?utm_term=stihl+ms270+wood+boss+manual+free', which is likely part of a phishing or social engineering attempt to trick users into downloading further malware or revealing sensitive information. The document body is heavily obfuscated and appears to contain junk data, further supporting a malicious intent.

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://traffset.ru/123?utm_term=stihl+ms270+wood+boss+manual+free PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417325/normal_5f97b5574e1f7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368951/normal_5f88be360ac13.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379971/normal_5f98ac31f0a8a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490736/normal_5fafadca6185b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381973/normal_5f9b0cbe44fac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4463263/normal_5fb4b9162c508.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366664/normal_5f8d5e0da0d54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366036/normal_5f8ae92cd6cd1.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/23a4b88f-f94a-46ab-904b-a38188d050e6/57232470615.pdfIn PDF document text
    • https://s3.amazonaws.com/zetituri/unblocked_games_running_game.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d81f9244-3148-48bf-9743-f4af3a304008/45247297547.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18e0f02a-b091-4fa7-b506-9aa1ff345fcc/fusabekoruvixuxebe.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.

FilenameKindSourceSize
font_00_sfnt_off0000be44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE44 5836 bytes
SHA-256: 17cc2ba973ba01e36b742a1b54787d5fdd1b700d2122862e5f1cd51053ce26e0
font_01_sfnt_off0000d20d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD20D 10844 bytes
SHA-256: f403eff047978ae8a4cc5eeb07f0b38dccb6f5acc29e4a5d8b4b7a3246b46d49