Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ad09519ccbaede6…

MALICIOUS

PDF

69.6 KB Created: 2021-02-26 15:06:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 7dbf90c1af4307d0a3543413e1d74a24 SHA-1: 21d4e3a0d759ef1014fa02033186dd5fa018f168 SHA-256: 6ad09519ccbaede6ec4a86684c358cc720065370b684b8c384aff1d0a40be7b7
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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.
  • 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://jacksth.ru/award?keyword=how+to+best+use+a+business+line+of+credit PDF link annotation
    • https://cdn.sqhk.co/tokafumotebi/iagcijt/dirufotijexumumadukiko.pdfIn PDF document text
    • http://all-system7.work/33367341373ck790.pdfIn PDF document text
    • https://nezuvaju.weebly.com/uploads/1/3/0/9/130969963/4545772.pdfIn PDF document text
    • https://pegepujime.weebly.com/uploads/1/3/1/4/131453637/xuwubowelidufosuninu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420432/normal_6030621667dea.pdfIn PDF document text
    • https://widajuzuno.weebly.com/uploads/1/3/1/6/131637349/reresuxoja.pdfIn PDF document text
    • https://silukirajewulo.weebly.com/uploads/1/3/2/6/132695932/4bee58cf1d63a.pdfIn PDF document text
    • https://nubeboganiroj.weebly.com/uploads/1/3/1/3/131384383/cf18d12fb418311.pdfIn PDF document text
    • https://cdn.sqhk.co/kekotenonaxu/iesc3je/funny_picture_quiz_with_answers_uk.pdfIn PDF document text
    • http://xudisoda.66ghz.com/vazinusobulo.pdfIn PDF document text
    • https://pugufatafa.weebly.com/uploads/1/3/5/9/135967981/8937952.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gonidiwofove.epizy.com/basic_english_grammar_video_lessons_free.pdfIn PDF document text
    • http://joriboka.epizy.com/34351102782.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_off0000d3ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3CE 5208 bytes
SHA-256: 9213f842afacba29051de16f73fa628206013d8d86326250fa9d2bfc1d1b9034
font_01_sfnt_off0000e5a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5A3 10564 bytes
SHA-256: e99e44aca8f4fcb31ca6b3ea0b7558e089d1ee5cac296386f6d1c4599a04bbf8