Malicious PDF — malware analysis report

Static analysis result for SHA-256 81001cc72b889f1c…

MALICIOUS

PDF

69.5 KB Created: 2021-02-17 14:48:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1b39d1b4026ab2b34a8f34a2f686bcaf SHA-1: d5f5ef550d2225237f74f9b2b8224d6e75a262d3 SHA-256: 81001cc72b889f1c64623c85e170223cb226681e7ec79dd4897c9fce2da81bc1
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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=phantom+sight+release+date+australia PDF link annotation
    • https://cdn.sqhk.co/jesisuvov/jbTjdjc/lotibisonopojir.pdfIn PDF document text
    • https://cdn.sqhk.co/lewulula/vjcnnGL/mejebev.pdfIn PDF document text
    • https://cdn.sqhk.co/jaxogubajo/dMgchex/difomotogudizatalex.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408195/normal_601b48edbf17e.pdfIn PDF document text
    • https://cdn.sqhk.co/gojikanemiju/VfiagiZ/tech_news_apple.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407299/normal_5fcc1be760462.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481518/normal_5fd3d94f814c8.pdfIn PDF document text
    • https://cdn.sqhk.co/jexozumumanu/egdhdfv/extreme_car_driving_simulator.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454167/normal_5feee2adccaae.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wuguwusilabibax.epizy.com/29842338263.pdfIn PDF document text
    • https://s3.amazonaws.com/solonebosop/62858234361.pdfIn PDF document text
    • http://lepevalir.rf.gd/giladezowewofus.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_off0000d4d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4D0 5240 bytes
SHA-256: be5d584759fb26c5c39b5e68d0e00175e71b4d0f1b6d6c0a54e25c5c7445b78c
font_01_sfnt_off0000e670.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE670 10208 bytes
SHA-256: b79d00538acbb5c2f4585c70e1972809562dabc0b7ba0afd0b1053e031798d9d