Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9881e155e6aaa84…

MALICIOUS

PDF

74.5 KB Created: 2021-02-02 04:58:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: d5271e654a8cef0f7a7ae7bba07704d2 SHA-1: e32edb5b419f110e66aef9bdd9551a9c7e1f5364 SHA-256: c9881e155e6aaa84f233531a9acb1a2fa240ca566b86210883bd24397d9dca15
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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.
  • 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://seumenha.ru/wb?keyword=sniper%20trickshot%20games%20online PDF link annotation
    • https://cdn.sqhk.co/tivuzofep/ggXjdgh/ftdna_family_finder_matches.pdfIn PDF document text
    • http://ludozikime.22web.org/news_reporter_stroke_video.pdfIn PDF document text
    • http://magicwoolshop.com/rimibunefutikim4n6.pdfIn PDF document text
    • https://cdn.sqhk.co/rubutemoxe/JMiajb8/nerobeziboxapuranow.pdfIn PDF document text
    • https://nijuvijoz.weebly.com/uploads/1/3/1/4/131408832/sejiwizuvesozage.pdfIn PDF document text
    • https://zuzunavodezap.weebly.com/uploads/1/3/0/7/130776081/badaxosuteso.pdfIn PDF document text
    • https://cdn.sqhk.co/jafetegupam/Xjcghjg/xidojokevezet.pdfIn PDF document text
    • https://cdn.sqhk.co/sozaxejiv/gjbmgig/download_sim_toolkit_app_for_android.pdfIn PDF document text
    • https://kavosimodo.weebly.com/uploads/1/3/4/9/134901779/8664781.pdfIn PDF document text
    • https://cdn.sqhk.co/roretuduva/ckhfgdU/70921893483.pdfIn PDF document text
    • http://dobikan.22web.org/pigosukusa.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://deroselewem.epizy.com/car_wala_cartoon_video.pdfIn PDF document text
    • http://bewexipobafuza.rf.gd/bad_boy_english_song_free_pagalworld.pdfIn PDF document text
    • http://vapovalexuma.epizy.com/xonitera.pdfIn PDF document text
    • http://xifedesekelogu.epizy.com/zubawavo.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_off0000e4e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E9 5516 bytes
SHA-256: ed170d3b5a9848bd35679a588a302a19b35370f9ae45c69ade616fadc16c1d42
font_01_sfnt_off0000f782.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF782 11140 bytes
SHA-256: ec2d959c836284a3d4aa27e908526cc19d1cd617ffc76c530324fa63f84b9ca1