Malicious PDF — malware analysis report

Static analysis result for SHA-256 b470d79277769cfb…

MALICIOUS

PDF

64.2 KB Created: 2021-02-28 13:19:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 564480173105aa3aae74764aafc72228 SHA-1: ff47f427ffe008c8810454e05c91e24a74b4daa7 SHA-256: b470d79277769cfb0b8422efeb5bc4f6fbe0df7678a51f962fcd528c30629fbd
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9979

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://xezojetit.ru/award?keyword=default+password+for+xerox+workcentre+7556 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4409405/normal_60020c0bca12f.pdfIn PDF document text
    • https://cdn.sqhk.co/xuwolupenilu/Jhgjige/piano_noir_ladybug_tiles_2019.pdfIn PDF document text
    • https://cdn.sqhk.co/risenulowo/fUwsjjR/63870949772.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449604/normal_5fdd746933e3a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501229/normal_602b2bbfef9a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416661/normal_5feaf570dd1a3.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/sedimeraxufi/75486747647.pdfIn PDF document text
    • http://rizivubonulej.atwebpages.com/40411383570.pdfIn PDF document text
    • http://sewujajapivix.onlinewebshop.net/fusovuwovutopidejufinozi.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_off0000be2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE2D 5732 bytes
SHA-256: 6ea3d0df9e1961fb88073c44a2c91f1e664afcd834e3be504231dd6c510135e8
font_01_sfnt_off0000d1ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1EC 10048 bytes
SHA-256: 38efe739110c3e134482ed77068bc60a17e427e61e88f75a409f1919e33cf3da