Malicious PDF — malware analysis report

Static analysis result for SHA-256 74e67b45d0aa13d0…

MALICIOUS

PDF

67.7 KB Created: 2021-02-06 06:52:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 5a7f517051c950425d6bc4e54bed62d8 SHA-1: 15c1bf64a608dd17391e54a453b9cd3282a5e1dc SHA-256: 74e67b45d0aa13d0fff52cec3486bcb797ee52801e82d74950a6e34ae82e8df3
196 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.
  • 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/aws?utm_term=fsdax+fund+fact+sheet PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4417329/normal_5ff9c2969692a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4402000/normal_5ff001c60f0e9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443337/normal_5fd1f2827d80e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383327/normal_6000e530806f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477183/normal_5fe9df57b8cc0.pdfIn PDF document text
    • https://cdn.sqhk.co/zeboxuze/jaiiEdM/53028573871.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4485702/normal_5ff51d8884fa3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379736/normal_6012bed387c3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4477873/normal_6016c361ad811.pdfIn PDF document text
    • https://juxusuvib.weebly.com/uploads/1/3/0/7/130739690/daborufixo.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497697/normal_6004787321791.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468812/normal_6011e1845e8cf.pdfIn PDF document text
    • https://sakixori.weebly.com/uploads/1/3/3/9/133997256/vurabuzel.pdfIn PDF document text
    • https://lozusometuzasop.weebly.com/uploads/1/3/4/7/134741376/kiwukukututa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420037/normal_5ff03e365683e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471082/normal_5fcd76fd266ef.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/figugipopar/86217852857.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/september_2019_calendar_printable_free.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_off0000cd19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD19 5004 bytes
SHA-256: a5cbedae790c379c1f336cfe77d38067b1f515a9d85f770cd99a0bf7e1cf11ad
font_01_sfnt_off0000de26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE26 10468 bytes
SHA-256: fe7da416dbaba8e68bc92b82253883ad03d9f6fa7ada8a2c5774d1c0d3f25a01

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