Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e6276ac582dac03…

MALICIOUS

PDF

76.1 KB Created: 2021-01-11 17:40:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 6bcd475c7f271ff94e1347706a30c795 SHA-1: 992b8f635d0610cc4628d4af671acf61a9e510a9 SHA-256: 7e6276ac582dac03a3475642536d89b967dfe1f8bd9d1940911a62667efb508e
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to the suspicious domain 'traffset.ru', likely intended for phishing or malware distribution. The PDF structure and embedded content suggest it's part of a phishing campaign, potentially using a lure related to 'Captains of Crush'.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=captains+of+crush+guide PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4443819/normal_5feb4facb8d39.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368248/normal_5fa9cb2c22c6e.pdfIn PDF document text
    • https://site-1180237.mozfiles.com/files/1180237/gunship_strike_3d_game_hack_version_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388428/normal_5fed0acc0b7bf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373768/normal_5ff0450189d29.pdfIn PDF document text
    • https://site-1179590.mozfiles.com/files/1179590/japantaxi_app_review.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422390/normal_5ffb4169d9ac1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369775/normal_5fb42b41dc851.pdfIn PDF document text
    • https://site-1194964.mozfiles.com/files/1194964/tonusawigojipatap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376858/normal_5f9f2d1c79715.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/naramuro/gekowum.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_off0000ed86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED86 5292 bytes
SHA-256: 9db89c3a52caba2ba6fef66fb389a707b7b0d62a23927a6fb4db49483b088977
font_01_sfnt_off0000ff7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF7D 10588 bytes
SHA-256: cae2b42262d9170de1c9508ac7fe50904e7a7923e37aacd9e4f4fe6fec968e18