Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd2b0ef719c83056…

MALICIOUS

PDF

73.4 KB Created: 2020-12-02 11:41:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 2385e46c2c40ef8a48086814dd908e55 SHA-1: 832415995d67ce02ca1cc462eaab84c91b711c51 SHA-256: bd2b0ef719c83056a52f40f4b7d82932e87a00c46166119628bbaff5b6d0f5a1
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'trafffe.ru', which is likely a phishing or malware distribution domain. The document body, though heavily obfuscated, appears to be a lure related to a game walkthrough, consistent with social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://trafffe.ru/strik?utm_term=final+fantasy+tactics+a2+walkthrough PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4381320/normal_5faf97f15495b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376362/normal_5f8a4d6bc9afe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488314/normal_5faf8a4297f28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460076/normal_5fb327e28b498.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443823/normal_5f9ce6919fe63.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/sizadagazagaj/buy_monovalent_streptavidin.pdfIn PDF document text
    • https://s3.amazonaws.com/sefipa/dri_wash_n_guard_products.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc19ab11452f90b7fea4d21/t/5fc500a3f3de5e49b50280e6/1606746276264/projectile_motion_worksheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6a89f536-60a4-4458-9221-af4e76ae9ba6/superman_lyrics_i_am_only_one_call_away.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf4976145a8629dca70cee/1606371703693/4810863066.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1321e2e34347c7045f8f9/t/5fc5a95c3c02f22b9dcfe343/1606789469680/worepevexapemuvapu.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_off0000e2bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2BF 5488 bytes
SHA-256: 73352c949e77bf198713dc06c049a5516d728eb70e2c80b7b1902853bf2470ea
font_01_sfnt_off0000f58e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF58E 10368 bytes
SHA-256: dcb5ffe97f1a6ad1d39aac864c36cdb0615c83269b3239199dc26edf575d0063