Malicious PDF — malware analysis report

Static analysis result for SHA-256 c66224e3b961d0d5…

MALICIOUS

PDF

72.3 KB Created: 2021-02-01 11:15:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b54cfb25887c31107d35e0972235dd07 SHA-1: a6f61bba2b555503887431a2f0b03a31558e5b8c SHA-256: c66224e3b961d0d5f81df97d7fb3444924606fd77519a4f1e7215f25ed3555f0
146 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 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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/123?utm_term=yo+kai+watch+2+qr+codes+select+a+coin PDF link annotation
    • https://koxawikala.weebly.com/uploads/1/3/4/6/134643159/budibomoxufika-nalajadedaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4461205/normal_5fe6961d7ffd8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419633/normal_6014af85a86bb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366004/normal_6003b171c7cf5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410989/normal_5fd9347cc68ea.pdfIn PDF document text
    • https://sutovuwoti.weebly.com/uploads/1/3/0/9/130968995/0664c8334408706.pdfIn PDF document text
    • https://zedazepofa.weebly.com/uploads/1/3/0/9/130969939/5097281.pdfIn PDF document text
    • https://gekibevuzoz.weebly.com/uploads/1/3/4/5/134503907/752a7d80b38d36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408987/normal_5fe6921ed854e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375203/normal_5fe9279679c11.pdfIn PDF document text
    • https://xofujudafovebe.weebly.com/uploads/1/3/1/4/131410434/4649c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475383/normal_5fd80c437cdcc.pdfIn PDF document text
    • https://pexerewiku.weebly.com/uploads/1/3/5/3/135313352/307935.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/bodajaku/kozijuxopuwam.pdfIn PDF document text
    • https://s3.amazonaws.com/xupovobejanam/bitlocker_to_go_reader.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_off0000ddf4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDF4 5400 bytes
SHA-256: 12680020a180e8d93423cf3a71babca0926a19406617b6b341865bac86348b22
font_01_sfnt_off0000f05e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF05E 10576 bytes
SHA-256: cea7f0686392f07017c76129c3610ecbc950b7f188730685e38eb9f244152f3b