Malicious PDF — malware analysis report

Static analysis result for SHA-256 3cec176f134aaa5e…

MALICIOUS

PDF

63.0 KB Created: 2021-02-10 19:39:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: f146c4917a505fe833db682a68609c78 SHA-1: 82c82c8d1acfc237f60ddc94e6de6bc1b0070662 SHA-256: 3cec176f134aaa5eb6821390690ab71787b3449b6d6adc9155051714c0b5676b
166 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
  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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://jottigo.ru/wb?keyword=rupinder%20gandhi%20punjabi%20movie%20full%20hd PDF link annotation
    • http://ca-manalapan.space/4048878377v38np.pdfIn PDF document text
    • http://fapenas.22web.org/linkedin_phishing_email_template.pdfIn PDF document text
    • https://cdn.sqhk.co/lomasamube/idwgdge/cash_app_money_online_generator.pdfIn PDF document text
    • http://goodsun.space/xuvaderexuwakuvibon04xi2.pdfIn PDF document text
    • https://cdn.sqhk.co/lojeliju/ggjghek/negin_mirsalehi_hair_curler.pdfIn PDF document text
    • http://reduslim-italia.website/77082264837o97cy.pdfIn macro / runtime command snippet
    • http://1gusevshop.space/division_with_decimal_remainders_ks2_worksheetsivjxg.pdfIn macro / runtime command snippet
    • https://cdn.sqhk.co/veletafi/jg8idS0/speed_motorcycles_cost.pdfIn PDF document text
    • http://carbackseat.site/gasorodigedusunokubedbl56.pdfIn PDF document text
    • http://dutipajito.22web.org/isometric_projection_notes.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://radujexoxetapil.epizy.com/vmware_horizon_client_5._0_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/runuzitexokol/lame_v3._98._3_for_audacity_on_windows._exe_free.pdfIn PDF document text
    • http://gexusapinofuvep.epizy.com/58079464770.pdfIn PDF document text
    • http://tijilidimipep.epizy.com/weather_report_meaning_in_tamil.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/leter.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://radujexoxetapil.epizy.com/vmware_horizon_cIn macro / runtime command snippet
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bc60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC60 5560 bytes
SHA-256: 89709497c72a444ea0e5b7c953b78ed668b95190c0979fa76007cf5aff535b9a
font_01_sfnt_off0000cf35.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF35 9388 bytes
SHA-256: 1eaff1cdff5d385deea707da210d18feed788db77e771ea32187037154674f94