Malicious PDF — malware analysis report

Static analysis result for SHA-256 64876ac2b9dfd02f…

MALICIOUS

PDF

62.6 KB Created: 2021-02-23 14:10:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: a577268a13c8f1ae64ea58c90a95bbb2 SHA-1: 1d6eea728635ea20c8a347c8726738102f849efd SHA-256: 64876ac2b9dfd02fa4713e1f060add09e36547c287c91862e7d778b6b2fef5ae
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://leonvi.ru/wix?keyword=intex+pool+pump+owners+manual PDF link annotation
    • http://byseles.xyz/battle_up_marinessin6v.pdfIn PDF document text
    • http://reduslimitaly-official.website/hotel_housekeeping_checklist_formatrgzbf.pdfIn PDF document text
    • http://thiswaytovogue.com/47979711675d75ue.pdfIn PDF document text
    • http://levantemosaic.com/617464550138nqe6.pdfIn PDF document text
    • http://yellownatural.space/renakijojuvyvpr.pdfIn PDF document text
    • http://liko-sneakers.com/figuletuzesagirisozwu240.pdfIn PDF document text
    • http://badgesverified.com/jebozexasojuxozumod327q3.pdfIn PDF document text
    • http://getcreditreport.info/97578058715b4gfr.pdfIn PDF document text
    • https://gizizajavime.weebly.com/uploads/1/3/2/6/132695742/5958073.pdfIn PDF document text
    • https://cdn.sqhk.co/titipubaduw/R5syD9i/valajuwamerugezeturomo.pdfIn PDF document text
    • https://segawalapuk.weebly.com/uploads/1/3/4/9/134902876/8ddb9377072.pdfIn PDF document text
    • https://nekusudowup.weebly.com/uploads/1/3/5/3/135315851/610249.pdfIn PDF document text
    • https://cdn.sqhk.co/folamudoj/2y66Hhj/rulitinosodaleboxitobab.pdfIn PDF document text
    • http://legrand-spb.ru/tapadexanisazomiznhxq.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/jeromopelurab/colours_of_the_wind_sheet_music.pdfIn PDF document text
    • https://s3.amazonaws.com/dalava/6917053975.pdfIn PDF document text
    • https://s3.amazonaws.com/figugipopar/pajinarikimun.pdfIn PDF document text
    • https://s3.amazonaws.com/gopuze/branding_design_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/liguwubore/friends_tv_show_episode_guide.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_off0000b6c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB6C1 5064 bytes
SHA-256: 7b2ef57e03786150ece2e3f46942a97e8367b926772b8d63eeb00c5d6af84f79
font_01_sfnt_off0000c7f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC7F2 10320 bytes
SHA-256: bbef197eff20276faac13b4602d1943d2b82d61b5c0375ab25da61dc1381497c

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