Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ab7f84762b43d0f…

MALICIOUS

PDF

69.2 KB Created: 2021-02-08 18:39:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6b56c3d9c4b44ffe030e1cd25a30d049 SHA-1: 37400feea2f07519e46d43275c5f8ebea414ab2c SHA-256: 6ab7f84762b43d0fbd7d543c5ca4c604bea8762410a0d01ec665af8690f73307
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://maypoin.ru/wb?keyword=business%20model%20canvas%20powerpoint%20template PDF link annotation
    • http://zerkalo-fugicar.website/4352251621ptzwi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4385011/normal_5fdeaf3fc4956.pdfIn PDF document text
    • http://japancar-sib.ru/xofotewutevaxojuq2h9l.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4393349/normal_5ffa744286c69.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371272/normal_6002b10393642.pdfIn PDF document text
    • http://iceteas.space/chrysler_30_cylinder_tank_enginen4kl9.pdfIn PDF document text
    • https://kexiberuvulom.weebly.com/uploads/1/3/1/4/131409574/3fa60.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368978/normal_5fe70181d8794.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404293/normal_601d7cd151d55.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374542/normal_601b42a6253a7.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/vasofirida/subezafuj.pdfIn PDF document text
    • https://s3.amazonaws.com/fipijife/scantronic_9651_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/mekonulegipero/42355943742.pdfIn PDF document text
    • http://xuwuxubemepimox.rf.gd/aace_statin_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/nakuzafol/airway_manual_maneuver.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_off0000d213.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD213 5420 bytes
SHA-256: 0e63a9847702cd043c13d75c3158056f2f9f91fd0c1a22c9a8a6f6f84d7fe16f
font_01_sfnt_off0000e480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE480 10308 bytes
SHA-256: 097f24b62ebc2e06ce2f4a8bd3e9a78902db0b64e4d53a49caf2a2d8bdea8606