Malicious PDF — malware analysis report

Static analysis result for SHA-256 a25d3d9a1749dd16…

MALICIOUS

PDF

70.1 KB Created: 2021-02-23 15:38:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 1b02a06c0a9d961ac2bbfa7f5b17509a SHA-1: dbf4b86668de28730f13e4f95fdfaaaa65735d50 SHA-256: a25d3d9a1749dd1603cf45555fca03159c17ece58ccffcfe6168bd82f7edb7ba
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • 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 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://jottigo.ru/wix?keyword=angular+ui+modal+pass+data PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383131/normal_5fd33e48c7cbc.pdfIn PDF document text
    • https://kawuzuvom.weebly.com/uploads/1/3/1/3/131379118/b7508c7224f04e2.pdfIn PDF document text
    • https://lekusilikeveb.weebly.com/uploads/1/3/0/7/130739001/bde2f723b.pdfIn PDF document text
    • http://vashmaster.info/how_to_determine_change_in_position_from_a_velocity_time_graphq73fa.pdfIn PDF document text
    • https://gavuwili.weebly.com/uploads/1/3/1/0/131070236/nopezujudejit_kitedavigosazik_kedawuwasivala.pdfIn PDF document text
    • http://bloomwithdeanna.com/gokavimomebifaretarodutijwaz.pdfIn PDF document text
    • https://bagamijak.weebly.com/uploads/1/3/1/3/131380043/159446.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4404103/normal_602224965d69c.pdfIn PDF document text
    • http://mmmmmme.space/why_are_ice_sheets_melting7y5fk.pdfIn PDF document text
    • http://goodnaturak.space/practice_ccat_aptitude_testlwund.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/wanalovum/blood_pressure_machine_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/fajixe/30513976187.pdfIn PDF document text
    • https://s3.amazonaws.com/mejobu/software_requirements_specification_example.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_off0000d59a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD59A 5268 bytes
SHA-256: 12de2dd023b2de837d68390799c217bc16d8927b8155b55b8bca65b566286ae5
font_01_sfnt_off0000e771.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE771 10616 bytes
SHA-256: dddaaaade82df9e237892f8255b76ff44ecd3c100ad4717cd8e509cd00cb09d0