Malicious PDF — malware analysis report

Static analysis result for SHA-256 8129f5bdb788fca2…

MALICIOUS

PDF

84.0 KB Created: 2021-01-26 10:56:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: fa8b44c70dabf5b60f1868fe49a294b3 SHA-1: 0c33aecdfba53cf7d3fd0eae9f97d570d2b84327 SHA-256: 8129f5bdb788fca2c1b28375b168981d56f5297e265eb1c4e8ee373d4bdf4a0a
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 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/aws?utm_term=agreement+of+sale+template+property PDF link annotation
    • http://socialwave.me/13030121918sbdmb.pdfIn PDF document text
    • https://bujabofilurukok.weebly.com/uploads/1/3/2/6/132682168/e6598.pdfIn PDF document text
    • https://dujomujur.weebly.com/uploads/1/3/4/8/134883281/pavezokokesabod.pdfIn PDF document text
    • https://cdn.sqhk.co/tumowara/6LUG8pq/my_talking_parrot_apk.pdfIn PDF document text
    • http://wajufogisabo.iblogger.org/puwirojobukoradu.pdfIn PDF document text
    • https://cdn.sqhk.co/lukedivibeb/gidJxjb/lynx_point_siamese_for_adoption_near_me.pdfIn PDF document text
    • http://vobasexukux.iblogger.org/free_menu_design_templates_vector.pdfIn PDF document text
    • https://cdn.sqhk.co/takularozo/gjdjggc/ringtone_making_app_for_iphone.pdfIn PDF document text
    • http://13millions.store/asana_pricing_enterprise9azc8.pdfIn PDF document text
    • https://cdn.sqhk.co/berirenike/0ghhjaP/ps_vita_fighting_games.pdfIn PDF document text
    • https://cdn.sqhk.co/danajuva/jc8MQhj/phoenix_old_arcade.pdfIn PDF document text
    • http://wersita.fun/taptap_pubg_1._0uk9s4.pdfIn PDF document text
    • https://cdn.sqhk.co/tumowara/M9Bjc9z/gewijezudirogekusokisig.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://miviguwi.epizy.com/16570685889.pdfIn PDF document text
    • http://karajifaderiwow.epizy.com/nizamaraxuvaz.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_off00010d4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D4E 5312 bytes
SHA-256: 2dcdf260f8f1db17a6e156659c945bd78dd85caf38dad77fa31ef04ccd3c4a58
font_01_sfnt_off00011f5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F5A 10508 bytes
SHA-256: c9a8393762940b774720e64306925b6d1b3ae79c5d7fc6a355b02fdd0abe1fe0