Malicious PDF — malware analysis report

Static analysis result for SHA-256 33c7c976c5e45dc1…

MALICIOUS

PDF

68.2 KB Created: 2021-05-03 05:54:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-22
MD5: f143fe1761b2772e0ea5d30d7f0cbc62 SHA-1: eccc4b040f597b4cca6c39eaa64d1cad10e700a2 SHA-256: 33c7c976c5e45dc13c1470153c3742fb761e7861fefe6fb689e6a1354b7026d7
146 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The document contains numerous embedded URLs, with one prominent URL pointing to a suspicious domain ('lozipotod.ru') that is likely used for phishing or malware distribution. The heuristic 'SE_CALLBACK_LURE' suggests the document may be designed to trick users into calling a fraudulent support number, a common tactic in tech-support scams.

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 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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://lozipotod.ru/strik?utm_term=what+kind+of+charger+does+my+phone+use PDF link annotation
    • http://tuderoba.getenjoyment.net/free_anger_management_workbook.pdfIn PDF document text
    • https://cdn.sqhk.co/nazopekujavi/ifhhbjf/75553783990.pdfIn PDF document text
    • https://cdn.sqhk.co/vubiwete/gghejN0/73168517780.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404725/normal_5ffe1d3ad6df3.pdfIn PDF document text
    • http://burivuvuju.medianewsonline.com/38616480143.pdfIn PDF document text
    • https://cdn.sqhk.co/nifijagik/jeNhja9/vr_home_theatre.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421477/normal_606a84146f0c3.pdfIn PDF document text
    • http://derilezin.sportsontheweb.net/56964066370.pdfIn PDF document text
    • https://cdn.sqhk.co/bivuwusim/ksjaO2H/meludati.pdfIn PDF document text
    • http://zoxodur.sportsontheweb.net/understanding_movies_by_louis_giannetti_14th_edition.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kabewusibun.epizy.com/jain_irrigation_systems_ltd_annual_report_2017.pdfIn PDF document text
    • http://zevesijuduma.atwebpages.com/how_to_set_up_a_fishing_line_to_catch_bass.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/94713082348.pdfIn PDF document text
    • https://s3.amazonaws.com/zagubip/bimejetukidibigikebirit.pdfIn PDF document text
    • http://rozasazi.epizy.com/65487986472.pdfIn PDF document text
    • http://kodugexibitomo.rf.gd/43280597573.pdfIn PDF document text
    • https://s3.amazonaws.com/murudute/robert_k._yin._2014._case_study_research_design_and_methods.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/kaththi_coin_fight_theme_song.pdfIn PDF document text
    • http://sulorowanutabu.atwebpages.com/15069465357.pdfIn PDF document text
    • http://zimopup.myartsonline.com/90539975345.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_off0000cc80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC80 5716 bytes
SHA-256: 81540f79fc384add6e1f57219f75d8be28623199fccfbce0599fd7e95f44aa33
font_01_sfnt_off0000dfeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFEB 10388 bytes
SHA-256: 829e1754248d2662aa26540c629c80d0c286c3a9debfb1c138f37cd0597a22cb

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