Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5380afbcf37cd02…

MALICIOUS

PDF

71.6 KB Created: 2021-02-14 07:08:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 2a3e84207c4826561740ccc6dc64ab36 SHA-1: a5535f7445c0874713e4022f841396f95af37b59 SHA-256: e5380afbcf37cd023213618e27c673523c399955bf4e10cd1c4d0f3d96978d36
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://maypoin.ru/wix?keyword=okami+strategy+guide PDF link annotation
    • https://devarewiwigunum.weebly.com/uploads/1/3/2/7/132710712/pufonepilutozov-metepemuwokapul.pdfIn PDF document text
    • https://tixovokibena.weebly.com/uploads/1/3/4/1/134109053/62ffe18014651.pdfIn PDF document text
    • https://cdn.sqhk.co/pakebisas/fjeRjb0/rebudixiwuxazososodijij.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/napisakaluja/simple_proforma_invoice_template.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/27202277604.pdfIn PDF document text
    • https://s3.amazonaws.com/buwosevax/21087175870.pdfIn PDF document text
    • https://s3.amazonaws.com/jifedefujodu/gizuwa.pdfIn PDF document text
    • http://dulibunaxojomo.rf.gd/linofuzelepowenedemosi.pdfIn PDF document text
    • https://s3.amazonaws.com/xonaxevetaf/75387078161.pdfIn PDF document text
    • https://s3.amazonaws.com/dejazuvorira/19202308956.pdfIn PDF document text
    • http://jalafugidovi.epizy.com/59114383538.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_off0000dcaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCAA 5308 bytes
SHA-256: 2c09cf01c5dac19e81c4c38ef08cb3111e6948c8bace06d74c45e5fd38212f61
font_01_sfnt_off0000eea7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEA7 10180 bytes
SHA-256: d6d23e9fc4328d233732d08ea34aedd630bb90bb6beaccf5bc09834a90c15f32

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