Malicious PDF — malware analysis report

Static analysis result for SHA-256 0efe914b01113cd1…

MALICIOUS

PDF

39.6 KB Created: 2020-11-09 15:46:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: df19c7db32882bd08337ad0252f83116 SHA-1: dcb8bead326dd3926b16ded3b9ef1adf3757cf95 SHA-256: 0efe914b01113cd1da8d219bcfdad83e033600ab37442ddd02219d93b81b4ce1
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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://gettraff.ru/strik?keyword=window+curtains+for+living+room+ideas In PDF document text
    • https://gemefakopegixi.weebly.com/uploads/1/3/4/3/134309359/8f813b15a2f5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365598/normal_5f87f8a8e0afc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385421/normal_5f931cbeb9f6c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370299/normal_5f8d8b63bd28c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385853/normal_5f8c9d12f3f74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366645/normal_5f88c1db94656.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368777/normal_5f8aeebb6056d.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/wanasuvedigo/lakorizeloxa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93be3f9f-92e7-4f90-9cb8-9d6fe0002cf3/bowurinesopus.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/51287260620.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_off00005a69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A69 5504 bytes
SHA-256: a406ab061d35f5ffcbea4fa88264e1fc01abaa01ecefd5936d306ac3917b3c6c
font_01_sfnt_off00006d30.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D30 10716 bytes
SHA-256: b53e88c01bcd662ac3a28f52fec5b4ebe50ed72e3f76ffcd69c7633d33f1ac14

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