Malicious PDF — malware analysis report

Static analysis result for SHA-256 6e8f00a57084c05f…

MALICIOUS

PDF

81.1 KB Created: 2020-11-18 16:00:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 4f2b02fae0a2e9d60fc7ce5f2e4d7287 SHA-1: bf44419d30f1232e3739359cda54e6182c7fcc2e SHA-256: 6e8f00a57084c05f238b982707d61044c0788a2eb9c56d917bc5c53971e120b6
156 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF file was flagged as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains numerous external links, with one prominent URL pointing to 'traffking.ru', suggesting a phishing or scam attempt related to 'csgo buy anywhere'. The PDF structure and the presence of embedded links are consistent with techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffking.ru/strik?utm_term=csgo+buy+anywhere PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4365525/normal_5f870832cb2b3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409425/normal_5f9fddeeb8a54.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417032/normal_5fa9866148b69.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370989/normal_5fad972cf2679.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381091/normal_5f913165a9ec9.pdfIn PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/gupasetigafoxumifow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406202/normal_5fae64f337af5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401694/normal_5f99250f06874.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4499653/normal_5fad2dc18d4d4.pdfIn PDF document text
    • https://mupififidimob.weebly.com/uploads/1/3/4/2/134234858/zisiduvifuna.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/5ae0fad1-1008-44f2-8681-0f6cb0c5dd85/61061417781.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/51521159771.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9577942e-33ac-4efb-a539-63633eb04689/fimijajejifigefinilejetax.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/vuxonuguvepivagaxeru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b4515529-3c6c-4b82-b376-0a772d151950/marc_a_meyers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7bf5a364-ed68-48f4-95c5-db7b3860f4c3/direnemanad.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_off000100a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100A1 5152 bytes
SHA-256: 1007648c4f9a3ff1a970cb1fa8034ef45cf4e04329e898d727b495cf395f061b
font_01_sfnt_off0001123c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1123C 10972 bytes
SHA-256: 7929c91e332f6f994a2fb9afa01d5cd06006a3d58f5e4c665adebfb391b0645a

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