Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ecfd88b88d6d5b9…

MALICIOUS

PDF

72.7 KB Created: 2021-01-12 18:17:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 41206b077bb813704348da5fa5d7178b SHA-1: 75d5bd9d999570747c59b15b16bb7e7d56fd9f8e SHA-256: 9ecfd88b88d6d5b9ddf9756877767a8f9c4135c296deafca2abbcd0407341c2f
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a suspicious domain, disguised with a lure related to Taylor Swift lyrics. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the presence of an external URI suggests an attempt to redirect the user to a malicious site.

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://traffking.ru/123?utm_term=taylor+swift+mine+lyrics PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4390999/normal_5f90d5ad73118.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490132/normal_5ffd44cbe7904.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4416921/normal_5fdf977e6be19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460055/normal_5fc27fa333a25.pdfIn PDF document text
    • https://site-1176684.mozfiles.com/files/1176684/giant_crowd__io_house_captures.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365589/normal_5fadf9f17111b.pdfIn PDF document text
    • https://cdn.sqhk.co/diratukuz/hE2hbVc/central_texas_umc_jobs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381104/normal_5f98fe50d90ea.pdfIn PDF document text
    • https://cdn.sqhk.co/minamojazi/ZQH2haR/zitajowurikerunifepot.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417818/normal_5fcc26a9cd6bc.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/rabewiruzitewa/18617100102.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/film_shots_and_angles.pdfIn PDF document text
    • https://s3.amazonaws.com/nowonovege/rujusofagibowojus.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_off0000e238.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE238 5168 bytes
SHA-256: a191e9997235fa4822c46c3d55ac33ef74639d84ffde853ac527daa8c1899819
font_01_sfnt_off0000f3d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D2 9956 bytes
SHA-256: 77875940e5004c61cfb6293e405854090bff1b04b13ea1b013c9b5ffde06728b