Malicious PDF — malware analysis report

Static analysis result for SHA-256 679fe09b5e7d33f6…

MALICIOUS

PDF

69.0 KB Created: 2021-02-19 03:51:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: e811d0a1862ef2d8b1239ed2d21a130d SHA-1: df61c072a6bc1327039b97ac0ebbaa708bd550e9 SHA-256: 679fe09b5e7d33f6fb746e1b1af9f47fe8d8dcd7c762a7c525d5710af91495c7
186 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
  • 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://bologen.ru/wix?keyword=manga+henin+beaumont PDF link annotation
    • http://bobixuposu.22web.org/54913012941.pdfIn PDF document text
    • https://sovivagigeb.weebly.com/uploads/1/3/5/2/135296454/9497946.pdfIn PDF document text
    • http://tofabukusakuni.22web.org/79169515073.pdfIn PDF document text
    • http://zasasibibo.iblogger.org/jubegilotafewitira.pdfIn PDF document text
    • https://bowiromifax.weebly.com/uploads/1/3/4/6/134613330/4cada0af46a.pdfIn PDF document text
    • https://zosotise.weebly.com/uploads/1/3/5/3/135393527/mejokudekup.pdfIn PDF document text
    • http://xufegabuxugil.iblogger.org/vijebiget.pdfIn PDF document text
    • http://itravelgr.com/44102065331utdgp.pdfIn PDF document text
    • https://suwuvonujijipi.weebly.com/uploads/1/3/4/0/134042364/60cdf4.pdfIn PDF document text
    • http://pexiwaz.iblogger.org/43823920639.pdfIn PDF document text
    • https://buvapubadoloj.weebly.com/uploads/1/3/4/2/134265521/3f2ac9ee4.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/baxegezivumi/98636896351.pdfIn PDF document text
    • http://rilowoxex.rf.gd/binary_multiplication_worksheet.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_off0000d1e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1E6 4936 bytes
SHA-256: fca2334007daaac24d27aad9cd1f4ac0a83e27085a5b97a688a549c64482509e
font_01_sfnt_off0000e29c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE29C 10268 bytes
SHA-256: 3ab21878380f02f7576fc7fcd1c579176051c062be6a2e9951042cba2003707c