Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fec0225ae97a6bd…

MALICIOUS

PDF

64.0 KB Created: 2021-01-20 07:46:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-14
MD5: 36463a3d4a8e03bf0ad30819ad56be7d SHA-1: 2f2c1d4ea941a9ca6a42992a3f31325332cd8472 SHA-256: 2fec0225ae97a6bd75babbbbd332cdf3d5216decdbd90bda635c6f6a897cc7c1
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a high risk score. It contains an embedded URL pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, suggests a 'guide' theme, which is a common lure for phishing or malware delivery.

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://leonvi.ru/123?utm_term=kol+fantasyrealm+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366036/normal_5fa09363e77ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416939/normal_5fd1c8fe28c7e.pdfIn PDF document text
    • https://cdn.sqhk.co/pugusomimoro/0h5kbsx/monkey_wrench_lyrics_chords.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420907/normal_5ff7768742f1a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403680/normal_5f9ce4bc9d675.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453900/normal_5fe0e990b3e67.pdfIn PDF document text
    • http://gijutudubesakuz.iblogger.org/messenger_android_5._0._1_apk.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4456685/normal_60056361288f0.pdfIn PDF document text
    • https://cdn.sqhk.co/kofuvufexo/iehh3Fl/rinimemuxi.pdfIn PDF document text
    • https://cdn.sqhk.co/wadelovelo/Xifieia/best_to_do_list_app_for_mac_2019.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://josisuvo.epizy.com/pesezuxezuj.pdfIn PDF document text
    • http://guruwemuzotal.epizy.com/identifying_clauses_in_complex_sentences_worksheet_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kewuxejikiwe/archimedes_principle_worksheet.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_off0000bf03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF03 5296 bytes
SHA-256: fcb94f6682eee7bffbdc4b1b2d7c6aef7712b03d32dbca74e556544c1756c8e8
font_01_sfnt_off0000d100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD100 9644 bytes
SHA-256: a5c631df0d339592ca64a6ce0293ebde50b5872a78bc283a840f16e67592ed0b

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