Malicious PDF — malware analysis report

Static analysis result for SHA-256 75ea3af8c8a3a950…

MALICIOUS

PDF

33.6 KB Created: 2020-10-31 07:14:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 754ce2f5bde944ef7d45763b2b048579 SHA-1: 11e3192e71785f0ededeae0617b99771ef5a330d SHA-256: 75ea3af8c8a3a9504e69c27ad17501573f5e13f9ab802bf6b8d084c2a399e767
94 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. 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://ttraff.cc/123?keyword=cyberpunk+2020+night+city+map In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367627/normal_5f8828ec91c6d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443574/normal_5f9c9fc820b7f.pdfIn PDF document text
    • https://zevigetadafuwun.weebly.com/uploads/1/3/0/9/130969942/9961a82d71f.pdfIn PDF document text
    • https://zepixufiguw.weebly.com/uploads/1/3/4/1/134108583/be47f6d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369782/normal_5f90e1d4a3b5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366005/normal_5f87e2533204d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367281/normal_5f87507b49d6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408878/normal_5f92e6f1e7b9e.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/6e1d9251-83a2-4939-8a88-8901c4ac6bb1/bosch_dishwasher_smu68m05au_repair_m.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/1136/5800/files/loopsie_pro_apk_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/04c1fcc5-e590-4bfc-a067-6d53a6ef415e/39538084396.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0be65e1e-9f96-4d0c-9355-2d622a8a77d8/46438448311.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dd7d709a-52e5-4759-b160-7e7f76b6aa01/dowup.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eb77fd26-b331-43bc-b24b-895fb11d721b/mimojonawop.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_off000044f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x44F1 5620 bytes
SHA-256: 9a7de2dbd909b8cbcd20b7159333700423735a9b3215d823b533e420c313a873
font_01_sfnt_off000057ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x57EE 9940 bytes
SHA-256: 4f8c1b848d7fedf85e0a0aae536f247da45eb2ef9feade71218c137abf7de6f0