Malicious PDF — malware analysis report

Static analysis result for SHA-256 3e77fa7115bcf502…

MALICIOUS

PDF

104.7 KB Created: 2020-12-08 12:57:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 5524dab947bc4393b235b6103f33fd89 SHA-1: 9d295f83350143f5157917e0e10b3eab467123f4 SHA-256: 3e77fa7115bcf5028c52db63ea07a6a7ffe755942abedafab0c99a1192b49ba2
96 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV and an ML classifier, with a high heuristic score. It contains an embedded URI pointing to 'trafffi.ru', which is likely a phishing or malware distribution domain. The document body, though partially corrupted, suggests a lure related to alchemy, and the PDF structure itself is flagged for potential maliciousness.

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://trafffi.ru/strik?utm_term=a+subtle+allegory+concerning+the+secrets+of+alchemy+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369774/normal_5f95aeda38a0d.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/tufujifinobiro/vitamin_c_miscarriage.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/bose_solo_15_series_ii_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/nupotukig/30617924276.pdfIn PDF document text
    • https://s3.amazonaws.com/mufukep/bts_answer_album_tracklist.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9bd6830-d142-4b9b-b687-2ff471946182/vuvab.pdfIn PDF document text
    • https://s3.amazonaws.com/wiwamoxamo/walutimulizav.pdfIn PDF document text
    • https://s3.amazonaws.com/risalenefazozo/dazov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/00d0af22-7105-4ec3-895c-d0fa70522a37/xojisenuwupovedoniro.pdfIn PDF document text
    • https://s3.amazonaws.com/faduxodiwo/xsplit_broadcaster_crack_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/be4a5a5d-20bf-4639-8a24-d8a8d790e755/97916987400.pdfIn PDF document text
    • https://s3.amazonaws.com/tobaziw/adobe_after_effects_apk_full_android.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9ee0ea23-0570-4882-872f-2874257a082a/transmit_error_code_1231_server_2012.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0ff8529-36e7-4072-8363-fca67cd6ebae/73878177463.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_off00015bbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15BBB 5800 bytes
SHA-256: 2707e4f390b40d201c0b1854c82efa73190621880bdca7097b2d3a46c0f608a2
font_01_sfnt_off00016f5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16F5C 11208 bytes
SHA-256: 54966f5727a251fa1d3760c91d189ee8d6156fc2649bdcddb9b5eaec82b2a94f