Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d345bbc7bc41d5e…

MALICIOUS

PDF

75.6 KB Created: 2021-01-04 07:41:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 9712d8ada28dbafeefae5568a191a53c SHA-1: f61e223e9810a30797c61ee07a28bd892169cd53 SHA-256: 3d345bbc7bc41d5e45ec09370ff81f876dd8d594b0f584bf9b1a3430cc5dfb14
244 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://traffmen.ru/123?utm_term=super+mario+bros+mod+apk+android+1 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4388065/normal_5f98e506c4bb0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4470685/normal_5fdfb43536581.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453327/normal_5fc0c2ba07479.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460230/normal_5fcb6cf29cfa9.pdfIn PDF document text
    • https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/4135560.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425924/normal_5f9b83c4cb472.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366043/normal_5f8a474ecc973.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405638/normal_5fa576f5d03f0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4384308/normal_5fc64f07604ef.pdfIn PDF document text
    • https://nowiwadigomu.weebly.com/uploads/1/3/4/0/134018048/lurodedupezag.pdfIn PDF document text
    • https://xopaluwejur.weebly.com/uploads/1/3/1/8/131857284/7524844.pdfIn PDF document text
    • https://cdn.sqhk.co/rowojazur/Zgdibjf/60938523584.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375699/normal_5fc94368aa149.pdfIn PDF document text
    • https://zatuduxe.weebly.com/uploads/1/3/4/5/134595584/400280738c6a5.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/bd9ba9fc-5152-4390-975c-9f2a5aaa772c/kiwosozazewajeni.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_off0000ebfb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBFB 5432 bytes
SHA-256: 5c1e3ece8fb428fa52c55a49f137d0beae85be1c2da0b44b3ca63beacfc3b7e4
font_01_sfnt_off0000fe54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE54 10324 bytes
SHA-256: 7a3bf830829e2312f45d65daa5fce80eb83b6b9cbd1834e3434143ff8567f683

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