Malicious PDF — malware analysis report

Static analysis result for SHA-256 91d300c76250648c…

MALICIOUS

PDF

65.8 KB Created: 2021-01-11 21:22:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: ad24e702e86c18a4b3c2785c88e374c7 SHA-1: 38eeae73072ef733255fd29bf62c56f6f06d3ed3 SHA-256: 91d300c76250648ca22b00748c68aed861d36038e4d72c6a128b91b25c1b713c
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing or malware distribution site. The document body, though heavily obfuscated, suggests a lure related to game downloads, aligning with common phishing tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

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://trafficel.ru/123?utm_term=spore+galactic+adventures+origin PDF link annotation
    • https://site-1176655.mozfiles.com/files/1176655/22132833147.pdfIn PDF document text
    • https://site-1210512.mozfiles.com/files/1210512/93370268177.pdfIn PDF document text
    • https://site-1166618.mozfiles.com/files/1166618/android_10_for_moto_one_power.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446151/normal_5fef64fe329c4.pdfIn PDF document text
    • https://cdn.sqhk.co/nerutadege/zICjfhj/battlelands_royale_apk_hack.pdfIn PDF document text
    • https://cdn.sqhk.co/ludozenidi/AxjeFia/jerumerede.pdfIn PDF document text
    • https://cdn.sqhk.co/gotofebelu/jci0hfc/todexuzaveziwabokuju.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/gezetega/75389042771.pdfIn PDF document text
    • https://s3.amazonaws.com/kaxukok/template_admin_php_bootstrap_free.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_off0000c317.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC317 5404 bytes
SHA-256: ddb4ec83a62c2aacedf28875bb53dbc6e339fec36ff4b4864b5656d359e2905a
font_01_sfnt_off0000d58b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD58B 11212 bytes
SHA-256: 6559f8917ce2003f58a3e37b0c4977d4557b9830d434e0e47e3ce797df5e5480

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