Malicious PDF — malware analysis report

Static analysis result for SHA-256 26d82ce9b6d0567d…

MALICIOUS

PDF

73.2 KB Created: 2021-02-14 04:50:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 1332c3d9b109b27d8876d48d3f2efb0b SHA-1: 5f4421622b6c60c09aa28968828b43df30273ee1 SHA-256: 26d82ce9b6d0567d54af51a3a6f0d9ab9fc3a4d37ea50df8a781254710de4178
284 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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.
  • 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://yafferge.ru/wb?keyword=credit%20bureau%20reporting%20false%20information In PDF document text
    • http://winsl.space/vital_honey_como_tomarlu920.pdfIn PDF document text
    • http://sunshop.pro/81787043734phabb.pdfIn PDF document text
    • https://gitakitopawal.weebly.com/uploads/1/3/5/3/135325500/9302e3b1867a15.pdfIn PDF document text
    • https://cdn.sqhk.co/nalomuxe/BeLjbi4/maf_carrefour_online_shopping_app.pdfIn PDF document text
    • https://fifukujujaki.weebly.com/uploads/1/3/2/6/132680890/mizoranubafiduvubi.pdfIn PDF document text
    • https://jefibapo.weebly.com/uploads/1/3/2/7/132712451/perutoko.pdfIn PDF document text
    • https://risogaruwakev.weebly.com/uploads/1/3/4/6/134634919/fotej_voguw_guwedezexuv.pdfIn PDF document text
    • http://axecheat8.xyz/kadasuxizj8ccl.pdfIn PDF document text
    • https://fabupegux.weebly.com/uploads/1/3/4/6/134689396/nikegupirox.pdfIn PDF document text
    • https://mavezuwunokil.weebly.com/uploads/1/3/4/6/134627141/7562717.pdfIn PDF document text
    • http://oneitstore.pro/developer_options_android_emulatorjt1mk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://dumevurofif.rf.gd/cyberark_psm_installation_guide.pdfIn PDF document text
    • http://favekagopu.epizy.com/oxford_companion_to_african_american_literature.pdfIn PDF document text
    • http://daxevekiwenux.epizy.com/5785589050.pdfIn PDF document text
    • https://s3.amazonaws.com/kugelilizibuwum/selewexoragewosek.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_off0000e141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE141 5404 bytes
SHA-256: ab439145bb0ad30a2d8bf09214b4d0d3f276a7106d8548cc9242a29adf95e45c
font_01_sfnt_off0000f38b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF38B 10580 bytes
SHA-256: fe07647eb998840a122a44ec5d6eb3b0772fc6bc2b4c745c9f9cff7969f9aacc