Malicious PDF — malware analysis report

Static analysis result for SHA-256 04b535c1e0bb0b1a…

MALICIOUS

PDF

72.2 KB Created: 2021-02-17 02:40:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 7797a8bf2eed64f07ae6ce04ebdd99ad SHA-1: 101de512a01053b5660e7c9d8a230177db5db2a3 SHA-256: 04b535c1e0bb0b1a4d399e94c62a80ba3258cff52a5e178788c8004f3719c9ba
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://leonvi.ru/wb?keyword=what%20happened%20to%20the%20characters%20in%20wolf%20of%20wall%20street PDF link annotation
    • https://mawovajexajadow.weebly.com/uploads/1/3/0/8/130874262/9634070.pdfIn PDF document text
    • https://cdn.sqhk.co/zunowexafa/ciaNJ8B/78799640291.pdfIn PDF document text
    • https://cdn.sqhk.co/noxuluni/icTiijj/color_spiral_game.pdfIn PDF document text
    • https://cdn.sqhk.co/famazipow/xiiU2SQ/14444521113.pdfIn PDF document text
    • http://gatigade.iblogger.org/vowubif.pdfIn PDF document text
    • https://cdn.sqhk.co/wanoposuj/aiifZif/2650145675.pdfIn PDF document text
    • https://tirusagoxavux.weebly.com/uploads/1/3/5/3/135329940/xaxitibafesivulizus.pdfIn PDF document text
    • https://cdn.sqhk.co/fofotixoz/Zgg1cPh/eternal_rogue_android_guide.pdfIn PDF document text
    • https://wejerimaz.weebly.com/uploads/1/3/4/6/134648800/88f485e8f75042d.pdfIn PDF document text
    • https://cdn.sqhk.co/genamudazunu/Liija6k/nemupopa.pdfIn PDF document text
    • https://katozela.weebly.com/uploads/1/3/0/8/130874493/4469030.pdfIn PDF document text
    • https://cdn.sqhk.co/tedatekalo/9a1migM/guess_my_age_2_settembre_2020.pdfIn PDF document text
    • https://cdn.sqhk.co/kixalixu/jidGgdq/space_shooter_new_galaxy_attack_cheats.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xemapejikiloje.rf.gd/algebra_2_unit_2_test_answers.pdfIn PDF document text
    • http://jodolevuvik.epizy.com/medication_dictionary_app.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/pharmacy_online_store_template.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/gubawatigukekilorokot.pdfIn PDF document text
    • https://s3.amazonaws.com/pilazi/ikea_brimnes_bed_with_storage_manual.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_off0000dc64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC64 5348 bytes
SHA-256: cd3be49639b871cbfd5e2f91d8624c37f13d1796e84703fc1a6c0f68683c1edb
font_01_sfnt_off0000eea8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEA8 10808 bytes
SHA-256: 9b67b7c6f02a261b2b53a92679299a9a59a53e878ebc4360cd7db06d7e87af5d