Malicious PDF — malware analysis report

Static analysis result for SHA-256 094bf8c12792bc65…

MALICIOUS

PDF

63.2 KB Created: 2021-02-21 17:47:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 0a0a1d1037de2da6b11ce5fdcfa4aa79 SHA-1: 020270a2f3a84b585ac35e6d2314aff73d07104c SHA-256: 094bf8c12792bc65d48e77433bf7426aee5cd597d7b940ed8a184fd70ba79be8
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/wix?keyword=iphone+4+manual+book+book PDF link annotation
    • http://byt-upak.ru/segejethj4e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484605/normal_5fd2d15320338.pdfIn PDF document text
    • https://guvixiwek.weebly.com/uploads/1/3/5/9/135976323/1464450.pdfIn PDF document text
    • http://claire-irk.ru/summary_of_pericles_funeral_orationhwkqk.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/bupijila/81863962132.pdfIn PDF document text
    • https://s3.amazonaws.com/gujutavevive/bizoxagizajenuzaniful.pdfIn PDF document text
    • http://beranaja.epizy.com/82203343606.pdfIn PDF document text
    • https://s3.amazonaws.com/mulerux/79425307377.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/xawaroxegapape.pdfIn PDF document text
    • https://s3.amazonaws.com/luxaduzimase/paruvibagulef.pdfIn PDF document text
    • https://s3.amazonaws.com/numegubowalonan/98167361150.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_off0000bd2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBD2D 5016 bytes
SHA-256: e19b2b7594630600cd572a4790c13fce632ceeb642351d36572502904eebaf08
font_01_sfnt_off0000ce12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE12 10020 bytes
SHA-256: 06bebaa847aca4c01bb610b50111fcc9bc5e044d1e4dead46d9298cc665581bd

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