Malicious PDF — malware analysis report

Static analysis result for SHA-256 eebd5f00b8d7ec83…

MALICIOUS

PDF

81.2 KB Created: 2020-11-18 23:52:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: d719fad587de25128e4326074cb50a70 SHA-1: a622b9d19774bf2ce0c7f0408776bb9ca181d97b SHA-256: eebd5f00b8d7ec83dff36fccc1ceaacabc1cebf3a43adf2eeff75255c1c110d0
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://trafficel.ru/123?utm_term=green+goblin+comic+art PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4443824/normal_5fa528b56f886.pdfIn PDF document text
    • https://rutizinudepedo.weebly.com/uploads/1/3/4/4/134483735/c9aa3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478383/normal_5fb2f54cbdbb7.pdfIn PDF document text
    • https://pixijitawe.weebly.com/uploads/1/3/4/5/134593468/wosifewogadix.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/sugaguxagu/mapevum.pdfIn PDF document text
    • https://s3.amazonaws.com/wolina/91925096908.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/jenesakapisojokuparikope.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/888584343.pdfIn PDF document text
    • https://s3.amazonaws.com/pukiza/genewibapa.pdfIn PDF document text
    • https://s3.amazonaws.com/degagaziv/diy_phone_case_kit.pdfIn PDF document text
    • https://s3.amazonaws.com/fizijosoraginu/rockies_season_tickets.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/josuxuke.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_off0001005b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1005B 5112 bytes
SHA-256: 3e63be08548a35f96db610606803b18614caedeed3e865d5834a75f55f215aa6
font_01_sfnt_off000111b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111B1 10756 bytes
SHA-256: 9da8210c4534acfdc94a71b2ffb8ecc99c089b282558339cc4c1a950ae2891e0

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