Malicious PDF — malware analysis report

Static analysis result for SHA-256 c6950b54ca1b891f…

MALICIOUS

PDF

81.1 KB Created: 2021-01-15 12:44:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 653420ac36752e521e0787d7fc172fc5 SHA-1: 73b2d1f21bb4b7086fba1e5d02fd72033084d40a SHA-256: c6950b54ca1b891fe720e82617af6a4424df0c1036fbf7c93c4597eed9055367
96 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate malicious intent. The PDF contains an embedded URI pointing to 'trafftec.ru', which is likely a phishing or malware distribution domain. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content, potentially exploiting PDF vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://trafftec.ru/123?utm_term=santiago+fernandez+dodgers PDF link annotation
    • https://cdn.sqhk.co/sovokeduseb/Qhcic1Z/inside_out_chords_and_lyrics_eve_6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468831/normal_5fa696504d90f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378846/normal_5f9832e06aa2a.pdfIn PDF document text
    • https://zaxavafu.weebly.com/uploads/1/3/4/3/134323176/tapufofibixumajo.pdfIn PDF document text
    • https://cdn.sqhk.co/zezovajav/jb9jhig/gozebe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387922/normal_5fdd9e020dead.pdfIn PDF document text
    • https://pufabakorulur.weebly.com/uploads/1/3/4/3/134320636/fejafibiz.pdfIn PDF document text
    • https://goraworozegisu.weebly.com/uploads/1/3/4/3/134324811/pitepatewiwut_satikokagut_nuvipitexaz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/pewebopufupe/bellaire_high_school_language_aptitude_test.pdfIn PDF document text
    • https://s3.amazonaws.com/jarawaxanivu/13895475902.pdfIn PDF document text
    • https://s3.amazonaws.com/jufowokedunod/colors_tv_all_serial_3gp.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dffd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFFD 5788 bytes
SHA-256: 0c37961019dc03b61595002847c779267574bb191ea6f0b65d184f50dc576976
font_01_sfnt_off0000f3cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3CC 4984 bytes
SHA-256: 40941549d935e8a5df1753aba979b81e4d0c8a7d32fcb023eaacafed1d7fff09
font_02_sfnt_off000104c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x104C4 11016 bytes
SHA-256: c51a26679361ca05123df24d4665ee42befa42ae85542be5de2faa4dc9a004db
font_03_sfnt_off00012972.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12972 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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