Malicious PDF — malware analysis report

Static analysis result for SHA-256 2747e179d6382b5f…

MALICIOUS

PDF

66.7 KB Created: 2020-12-28 06:07:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: a548db693458698df257fe91b74d824a SHA-1: 7892e351511ffd58e73719f8289a432b5f9a24fd SHA-256: 2747e179d6382b5f57a7dd4623654491a62edef61d00f5c58bde51214724b1c2
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, specifically as a phishing trojan. It contains an embedded URL that directs users to a suspicious domain, likely as part of a phishing or malware distribution scheme. The document body, though heavily obfuscated, appears to be related to online games, serving as a lure.

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://trafficel.ru/aws?utm_term=best+online+browser+games+no PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367304/normal_5f875a213a9da.pdfIn PDF document text
    • https://cdn.sqhk.co/tifesiwafo/eicRW4G/59829664505.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382189/normal_5fe5e502a6977.pdfIn PDF document text
    • https://cdn.sqhk.co/podiwilur/fjjxiim/xareve.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386605/normal_5fa47d131e9f0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452376/normal_5fd2837108c32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374545/normal_5fa43479b73c4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404953/normal_5fe0fb38eba80.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470979/normal_5fcf12a4b24b1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411512/normal_5f9da1941846f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389355/normal_5fe92d39d1784.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414688/normal_5fd23a0dc5a44.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/wumodukubaru/bad_boy_song_video.pdfIn PDF document text
    • https://s3.amazonaws.com/rodakarugupoko/91782307874.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_off0000c9c3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9C3 5288 bytes
SHA-256: a4b87752aafc73c0c6bae82b7dcbb3b6a1009d7fa72fbb96c4ecdc5753d10cd9
font_01_sfnt_off0000dbbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBBC 10104 bytes
SHA-256: 8b21e73b36dff54737a83bab402aeacdb61c220bbad3462018483cf0c21cc86a

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