Malicious PDF — malware analysis report

Static analysis result for SHA-256 979fba53e5a2a597…

MALICIOUS

PDF

58.4 KB Created: 2020-11-02 15:14:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: da573efd1c766f7d3be69b978a346251 SHA-1: 10006212cb2a9752af9d63a04dde3fd71c149bbd SHA-256: 979fba53e5a2a5976163e415aa3c9675770125e42c029f0b2d1da2316d78c958
102 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. It uses an urgency-based lure. 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 4

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.cc/123?keyword=brolin+streisand+divorce In PDF document text
    • https://cdn-cms.f-static.net/uploads/4416805/normal_5f9abc0b9c605.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/c5309aa1-404b-407d-8e85-b82f8f0bf0fd/star_wars_sales.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08de900b-ee7f-4124-b068-12952b6f0798/14250323225.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e76b6f8e-18ee-4ab5-bf44-8cce98a2e33c/bravely_default_strategy_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f4ee4ad-aa91-459d-8095-0ee3b4f3955c/59023439645.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/6406/4707/files/critical_ops_hile_android_oyun_club.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/suxonokupak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/148998e8-cbeb-48a3-bad2-263eafcf9df3/retanadoxig.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/df1640b2-d330-4ab2-beb3-7fde112a22ae/17265584552.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8904/4651/files/wemogu.pdfIn PDF document text
    • https://s3.amazonaws.com/subud/naterijijefinanav.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_off0000a3cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA3CF 5040 bytes
SHA-256: 0c2f3d2b4fd49d765b6983f4a1b13db0dcdda800a08ba426e3d93a521c3eac8b
font_01_sfnt_off0000b508.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB508 11912 bytes
SHA-256: 977a1c9b9a6cf12b63ee3363cf1b05c8bf0b1cf5e5f2ca98be24be379f19e48e