Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff600c670945a466…

MALICIOUS

PDF

44.6 KB Created: 2020-11-02 06:41:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 4c4ec2724bc97a43e5394881333cb8df SHA-1: ee89e716bb809ce737a83cdadd7872bf8d4efdad SHA-256: ff600c670945a466194bfd1d94f0a2d6d3f014244eda23ec9c41c6de21486467
94 Risk Score

Malware Insights

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

The PDF contains a link to a redirector URL associated with known malicious infrastructure, specifically mentioning 'alpha labs keto scam'. The ML classifier also flagged this PDF as malicious with high confidence. While no scripts were extracted, the presence of a malicious link strongly suggests an attempt to redirect the user to a phishing or scam page.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ttraff.club/123?keyword=alpha+labs+keto+scam In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367905/normal_5f8c898fda2f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370090/normal_5f94251d49da8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385850/normal_5f8e11b2a972a.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://uploads.strikinglycdn.com/files/16470196-3fb2-4c20-abdd-e57007892a1e/39859786780.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f9bb7ca6-cc14-4362-8d20-4a704c91e66f/dr_rahim_gonstead_father.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fec67684-23bf-4834-9f70-f32a41dfe2fc/high_quality_to_high_quality_jpg.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/17246952489.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/gipesonefipaxelat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d536b0ee-bfd2-4e28-8cad-bde3c2d1c61d/saguw.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/timowamadeloxevumu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000634e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x634E 4904 bytes
SHA-256: 81726561cd7ef1d20d046582bc0dcad7d96bef346a2c74f6ee030a0fef11c3b8
font_01_sfnt_off000073f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73F3 10356 bytes
SHA-256: 6a8c4527690f5da2281615355de0f6ac49bfbaebd0f0d95d47e4ce74707463f2
font_02_sfnt_off0000975c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x975C 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361