Malicious PDF — malware analysis report

Static analysis result for SHA-256 80d15a973f27bd90…

MALICIOUS

PDF

65.9 KB Created: 2020-11-13 11:36:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: d4dcc2877a14bbd551ecfc64dbda136c SHA-1: 1a98e631a34ee22ecc95e082a3552251505fdba4 SHA-256: 80d15a973f27bd901292cc2282fc583498a7160c10d964420d734d1c49560ade
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The document contains an embedded URL that likely leads to a malicious download, disguised as a free music download. No scripts were extracted, but the presence of embedded URLs and the nature of the detection suggest a phishing or malware distribution attempt.

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://trafftec.ru/123?utm_term=thinking+out+loud+instrumental+mp3+free+download PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4469617/normal_5fa5816edd373.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489835/normal_5faa4a8a7ad54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369518/normal_5f8b55d254312.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379045/normal_5fa3a0c734b28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410985/normal_5f9724cd6229c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387712/normal_5f968be223947.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366004/normal_5f86f9474acfd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366335/normal_5f8725254634b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367920/normal_5f8a289d9c5af.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387573/normal_5f8e5436cb295.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419633/normal_5f9be24e2a06c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408340/normal_5f9a0f5e66a48.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378405/normal_5f8a23fd5e209.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405420/normal_5f98fa63b26db.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/sugaguxagu/44390259248.pdfIn PDF document text
    • https://s3.amazonaws.com/divikufifir/wezomapalezanimidomul.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_off0000c3fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3FB 5724 bytes
SHA-256: d7c071dfa167483876b6428ea45cea7e9ca990f2d6f3a204a06d796788c0d959
font_01_sfnt_off0000d76a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD76A 10216 bytes
SHA-256: 719f8039b6429804b32b00ad3c24cc5443c80d1b9fc3203707b812a1b1ff738d

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