Malicious PDF — malware analysis report

Static analysis result for SHA-256 dae88927626df5c8…

MALICIOUS

PDF

71.2 KB Created: 2021-03-01 03:51:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: d7d5fb26e29a91ca177959d4cc4aad32 SHA-1: c9c045630417801b803730a56fe0b7fd2888c316 SHA-256: dae88927626df5c8b1c5eb6dd3bf3036e95bddcd2174e69f155d2cce5e5d773d
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://pelibifir.ru/wix?keyword=cura+personalis+creighton PDF link annotation
    • https://cdn.sqhk.co/zifiguwosu/MiehifU/mahjong_solitaire_classic_online.pdfIn PDF document text
    • https://cdn.sqhk.co/potasuregoz/ij0zChg/jinunawuxivedabexaxuxewa.pdfIn PDF document text
    • http://sutivetowit.mypressonline.com/39072814859.pdfIn PDF document text
    • http://toolsbestpricemicrometer.site/towuvowomazalpw7r1.pdfIn PDF document text
    • http://sipataj.sportsontheweb.net/sopuxitedavaruwe.pdfIn PDF document text
    • http://pimifawimonidij.mywebcommunity.org/las_chicas_de_alambre_todos_los_personajes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448746/normal_601e2cb44d76c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4529095/normal_603040a0bc362.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://lanikudawojag.rf.gd/kyphoplasty_medtronic.pdfIn PDF document text
    • http://bufijonewufo.onlinewebshop.net/is_drinking_chai_tea_bad_for_you.pdfIn PDF document text
    • http://jeborawaleko.atwebpages.com/holden_evening_prayer.pdfIn PDF document text
    • http://didefoxesepu.rf.gd/dufubetexoxapaz.pdfIn PDF document text
    • http://dowuvoduwitovos.atwebpages.com/xezuzojepidaxexuwijapa.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_off0000dc4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC4A 5100 bytes
SHA-256: 6740e9be3071f484fe30f8691bfa77389dfba5c6f129c0c3242634cb8eccc27d
font_01_sfnt_off0000ed93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED93 10160 bytes
SHA-256: 97840b76df9b0f0134a82a086a0553e9f8d097ddbef4bdc3c3819232ee4eb1f8