Malicious PDF — malware analysis report

Static analysis result for SHA-256 0b6e960e4db142d4…

MALICIOUS

PDF

65.9 KB Created: 2021-02-24 00:44:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: b19b10516c9cf1a66d8f7c859849e517 SHA-1: da0c1c15e73c8adae10c27809f13dcf40d2c0538 SHA-256: 0b6e960e4db142d419d21a209e6bba0a79ec4319b91ba9d103863111e26bd7ff
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://bologen.ru/wb?keyword=song%20once%20i%20was%207%20years%20old%20lyrics PDF link annotation
    • http://ukranews.icu/can_a_civilian_get_special_forces_traininghfd1u.pdfIn PDF document text
    • http://ozalupa.space/what_is_conversational_voice_in_english_grammarvldti.pdfIn PDF document text
    • https://nanewibogexuro.weebly.com/uploads/1/3/1/3/131382113/nadodimadakepiki.pdfIn PDF document text
    • https://cdn.sqhk.co/kopozufu/jbhgi9F/bob_ledford_s_adventure_world.pdfIn PDF document text
    • https://mixidesurujof.weebly.com/uploads/1/3/4/9/134902607/kudiwepurazudi.pdfIn PDF document text
    • https://cdn.sqhk.co/javeduner/iegjhfK/ualberta_library_pubmed.pdfIn PDF document text
    • https://jusegopij.weebly.com/uploads/1/3/4/4/134480833/74f59dd7d2cd6c.pdfIn PDF document text
    • http://wumokejo.iblogger.org/read_180_real_book_stage_c_answers.pdfIn PDF document text
    • http://datab.vip/zujovubibovokogerifozotagim0ny.pdfIn PDF document text
    • https://kixofugowewo.weebly.com/uploads/1/3/1/8/131872146/taboziregusi.pdfIn PDF document text
    • http://reduslim-shopofficial.site/mizerak_chicagoan_pool_table_manual66ar0.pdfIn PDF document text
    • https://moxujudafetofa.weebly.com/uploads/1/3/2/7/132712376/sadafifivawilasikux.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fudojozijenabux.epizy.com/ledolimivopixiv.pdfIn PDF document text
    • http://vodupuginotipir.rf.gd/bejawowimadopemafogot.pdfIn PDF document text
    • http://xatovafibusatip.rf.gd/awara_bengali_movie_hd.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_off0000c49d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC49D 5484 bytes
SHA-256: 4fafebbc55d8e71d1fca778f83bcaefd9bdbc5a5f032c078d9ee1e02acc3f73a
font_01_sfnt_off0000d76f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD76F 10420 bytes
SHA-256: 3ef90ad750609a2a847f1149f514d814a635a8cbb4c93431d8e7ca9ccfcef0f5