Malicious PDF — malware analysis report

Static analysis result for SHA-256 5165078b729701dd…

MALICIOUS

PDF

75.4 KB Created: 2021-02-22 07:02:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 45ba960842dbb81dee92b26a5c7c52a9 SHA-1: e9ea2bdfe0ce2255c4c21cbdbb9ea792f84fa584 SHA-256: 5165078b729701dd8cd58eff0bf8ee3b10d4f955a9636ef9243a8bd4e170b6a0
96 Risk Score

Malware Insights

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

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a phishing site. The document body is heavily obfuscated, but the presence of external URIs and the overall detection profile suggest it's part of a phishing campaign.

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://leonvi.ru/strik?utm_term=operating+system+mods+cyberpunk+2077
    • https://lajisoxe.weebly.com/uploads/1/3/4/4/134435468/63e9594b.pdf
    • https://cdn.sqhk.co/ridasozewe/O3SjbzR/best_buy_keyboard_piano_black_friday.pdf
    • https://cdn-cms.f-static.net/uploads/4367303/normal_602c356121db2.pdf
    • https://cdn.sqhk.co/kerikone/qP7Thds/free_online_air_hockey_glow.pdf
    • https://cdn.sqhk.co/rogenujudita/jfhhthh/pusazasixa.pdf
    • https://mizemajawoxulu.weebly.com/uploads/1/3/1/4/131437858/9260468.pdf
    • https://static.s123-cdn-static.com/uploads/4479212/normal_5fe3385b305f8.pdf
    • https://bexokafosirur.weebly.com/uploads/1/3/2/6/132695536/2834047.pdf
    • https://poxefapujo.weebly.com/uploads/1/3/5/3/135312596/pabesub.pdf
    • https://static.s123-cdn-static.com/uploads/4423188/normal_5fe58f64cfc58.pdf
    • https://feverawujebuv.weebly.com/uploads/1/3/5/3/135314909/7362002.pdf
    • https://cdn-cms.f-static.net/uploads/4479923/normal_5fe625471b356.pdf
    • https://cdn.sqhk.co/jojojidatun/Ajbteha/22054238510.pdf
    • http://okstore.info/43204776728c2foh.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/wekibik/aviary_app_for_android_free.pdf
    • https://s3.amazonaws.com/fusidejebi/clearing_fractions_and_decimals_worksheet_answers.pdf
    • https://s3.amazonaws.com/tinivukedeta/seferafafedoponiw.pdf
    • https://s3.amazonaws.com/nitidadufetenu/graham_s_law_example_problems_with_answers.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7b9.bin
9f13a9da83e434c9a73806a7b08df0c89ca76d55cae220e0ee071b2de7e034cb
pdf-font-stream PDF embedded font (sfnt) at offset 0xE7B9 6048 bytes
font_01_sfnt_off0000fc44.bin
510ee8324e96776591adb2a3c32d3a2d4077468825e74e1fa99718a489559637
pdf-font-stream PDF embedded font (sfnt) at offset 0xFC44 10680 bytes