Malicious PDF — malware analysis report

Static analysis result for SHA-256 2764ee271a72b5a6…

MALICIOUS

PDF

88.2 KB Created: 2021-02-14 01:38:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-20
MD5: 0666477af174a0a4cebe077fd954d84a SHA-1: db1c7b07fa52f47b8dfe2a741c0a8628e7277873 SHA-256: 2764ee271a72b5a695bd6040bde02f2929e6f826993b12c5187b1bcaabb09644
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a website disguised as a game guide, likely a phishing lure. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. No scripts were extracted, but the presence of an external URI is a primary indicator of a malicious campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/wb?keyword=bleach%20brave%20souls%20pvp%20guide PDF link annotation
    • https://cdn.sqhk.co/betewulo/jgibu5g/root_board_game_app_review.pdfIn PDF document text
    • http://temilops.xyz/cbt_self_care_worksheets95j9y.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426941/normal_602756fea5515.pdfIn PDF document text
    • https://dusonibegoxat.weebly.com/uploads/1/3/1/3/131380688/mutalof.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493890/normal_5fdf9ace2b267.pdfIn PDF document text
    • https://jewafime.weebly.com/uploads/1/3/2/6/132681773/wiwuvevona.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401976/normal_6011e2a5b56b3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448731/normal_5fcc59dd077c5.pdfIn PDF document text
    • https://lejumapufa.weebly.com/uploads/1/3/4/6/134688193/6ce6f27470.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368996/normal_5ffb8754bc7cd.pdfIn PDF document text
    • https://zixozuji.weebly.com/uploads/1/3/1/4/131454221/cdc4b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375699/normal_5fde88e695c31.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/kasuwevovog/year_3_homework_sheets_for_free_australia.pdfIn PDF document text
    • https://s3.amazonaws.com/bofake/lirogefaririxapotojujova.pdfIn PDF document text
    • https://s3.amazonaws.com/xukirizugukugi/52438768496.pdfIn PDF document text
    • https://s3.amazonaws.com/kozewuposoridil/xufusot.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000104c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104C0 5584 bytes
SHA-256: edf775407dd82209eb76b1eb1b71075e768f3e826f7d0bc7f54b7ee41f585f3b
font_01_sfnt_off000117b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117B6 11232 bytes
SHA-256: 398398d4e8c3791f6b4c828aeba541e5dd6a45e3fbcaf51a905798b2cbb2b9f2
font_02_sfnt_off00013e67.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13E67 16092 bytes
SHA-256: 9af6fc3bf9d751f70540aea0fa47faa159a3604992cda23d2adcda3ffc5346b2

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