Malicious PDF — malware analysis report

Static analysis result for SHA-256 30e67e6dca54b49c…

MALICIOUS

PDF

76.3 KB Created: 2020-11-14 08:03:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 92dc9bfae2ead72d82a1aaad72a3f895 SHA-1: 6cfe304642928f428cfbce15a8d23ec36cd154df SHA-256: 30e67e6dca54b49c944807a2611fb015723d5062ed1145108abd288d4c5aea8b
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, with a critical heuristic identifying a 'PDF_SEO_LINK_FARM' indicating a large number of outbound links. One prominent URL is 'https://trafffe.ru/123?utm_term=pathfinder+wizard+necromancer+guide', and another is 'https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/kadupe_ripovu_jozovagazemewe.pdf'. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or distributing further malicious content.

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://trafffe.ru/123?utm_term=pathfinder+wizard+necromancer+guide PDF link annotation
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/kadupe_ripovu_jozovagazemewe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446921/normal_5fa5c53c62d90.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407102/normal_5f9da2cb19f34.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374535/normal_5f8b43f752d36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371783/normal_5f88b7074eeae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393901/normal_5fac4e390a57d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390056/normal_5f95a464c2c19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365619/normal_5f87026616959.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/sivanira/27916981524.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d672b9f-226c-442a-9d5e-32aad0e6308b/62380028797.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5805bbd7-a9b6-4089-9b85-f88bbaf38969/d_d_5e_class_and_background_share_proficiency.pdfIn PDF document text
    • https://s3.amazonaws.com/wizidimawag/car_park_challenge_unblocked_games_66.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77f86fb1-322e-4cb1-9603-4fd023fb62e8/mulojitosinoruza.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_off0000e9af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9AF 5368 bytes
SHA-256: 6ff268e91aa2cf00624a3029f1968f048d819a09df69af28930769086a4c7b9e
font_01_sfnt_off0000fbe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE8 11600 bytes
SHA-256: 85288c5586a3c77d90202557be7f0645353692537a25c2e67ece0f608077aed9

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