Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e80319ceb176bf3…

MALICIOUS

PDF

65.3 KB Created: 2021-02-28 06:01:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2695bc829b4ff3373364990e8d65383a SHA-1: e56ae8601fad0e84274d1c9a8475fe550548fa2b SHA-256: 5e80319ceb176bf34ffd81918d28918830ddf0ca92317667e667b72be73e9076
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/award?keyword=how+to+stop+alarm+in+fastrack+watch PDF link annotation
    • https://rarinuda.weebly.com/uploads/1/3/5/3/135349313/nivigi.pdfIn PDF document text
    • http://raxejudesezix.scienceontheweb.net/35082502503.pdfIn PDF document text
    • http://wumewil.sportsontheweb.net/stihl_ms180_carburetor.pdfIn PDF document text
    • https://cdn.sqhk.co/detaludolef/Fpijrih/gadgets_360_app.pdfIn PDF document text
    • https://cdn.sqhk.co/fifusaji/ifihugc/39008902326.pdfIn PDF document text
    • http://ruguwafe.scienceontheweb.net/779274240.pdfIn PDF document text
    • https://lotopunukulel.weebly.com/uploads/1/3/4/4/134473418/tipozexojemoneweg.pdfIn PDF document text
    • https://wugeneziwepuzi.weebly.com/uploads/1/3/4/4/134494794/faximidapemoj-rotajojiv.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zikoliduxa.atwebpages.com/jusowisogiturukavusoku.pdfIn PDF document text
    • https://s3.amazonaws.com/zafijukopa/simple_loan_agreement_format_india.pdfIn PDF document text
    • https://s3.amazonaws.com/feseni/cute_birds_hd_images.pdfIn PDF document text
    • https://s3.amazonaws.com/nagev/96689344251.pdfIn PDF document text
    • http://wutejaxevewef.myartsonline.com/80164112692.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/pujitulelobimo.pdfIn PDF document text
    • https://s3.amazonaws.com/pusixa/angel_olsen_all_mirrors.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_off0000c32a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC32A 5372 bytes
SHA-256: 202d3d37be3152cba0a58e60b2f28a494c7cae5ad9659f772748329bbe7236af
font_01_sfnt_off0000d559.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD559 10208 bytes
SHA-256: 9a8c1dd6ceb0200231b0c1deb80adb41753f5d761e57a7ed1f20ee5f5cbafeef