Malicious PDF — malware analysis report

Static analysis result for SHA-256 f473638174950f30…

MALICIOUS

PDF

42.4 KB Created: 2020-10-30 18:51:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9eba8885c17de0fc105d90e5802c9324 SHA-1: b9e3637a4d2b14fac1bbe5518029a15871e2dcb1 SHA-256: f473638174950f30878962dbf4455b66d290d533e78fff8105af48f464b7389f
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://cctraff.ru/strik?keyword=rubi+tile+cutter+parts In PDF document text
    • https://cdn-cms.f-static.net/uploads/4426944/normal_5f9850d1541e8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374517/normal_5f8dc0a124c54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414689/normal_5f97a7963fa84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376875/normal_5f89c07848f33.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367656/normal_5f875cd9dfd74.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367281/normal_5f99e6c53ec77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378164/normal_5f8ecdd304023.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424341/normal_5f9b37e9b3ca5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369633/normal_5f88c6bbcda5f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379355/normal_5f8fff61d02b6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417827/normal_5f96d85ad2acb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366346/normal_5f8cad8bcc3d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365653/normal_5f870ab86507c.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/fc94d4f6-e7fa-46bc-90cb-0955ca22bbdd/murefujududibigej.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb6c6407-8036-42b7-81df-cf03020b6269/9276431487.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

Related samples 3

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005a4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A4D 4740 bytes
SHA-256: 17120423a50f270a702c6ee2fdf34722689cb648ad68d074d1c9cf69ebbf96ab
font_01_sfnt_off00006a77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A77 10740 bytes
SHA-256: 3f6dedad80aa2879b96f2667f254e4990221b5d59fa474db6d649f7e1d4b8bb7
font_02_sfnt_off00008ea4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA4 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2

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