Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b22eb8dd0c1fb06…

MALICIOUS

PDF

61.0 KB Created: 2021-02-12 22:46:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: dd17151fc577dcf07b81fca7340e6161 SHA-1: 97f57d1a89e708c3d44f12a8661ec438b017f01a SHA-256: 4b22eb8dd0c1fb062bfb01986515da80fe0097be448af980850836912e2e0dfb
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • 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.
  • 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/wix?keyword=flight+simulator+x+manual+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4405652/normal_5ffb72185c215.pdfIn PDF document text
    • http://help-verifiedbadgecenter.com/reformed_theological_seminary_online_lecturesagj9q.pdfIn PDF document text
    • http://daravto18.ru/cfa_program_curriculum_2020_level_ifyznn.pdfIn PDF document text
    • http://lnstagrambusiness.com/svt_5eme_digestion_evaluation_exerci15xro.pdfIn PDF document text
    • http://jobware.pro/andamio_cognitivohb91k.pdfIn PDF document text
    • http://organize.shop/32336054979a6gt.pdfIn PDF document text
    • https://zetapowopes.weebly.com/uploads/1/3/0/8/130813904/podekuvapoxibu.pdfIn PDF document text
    • https://xuvifadeto.weebly.com/uploads/1/3/2/6/132682806/velur_wozuvuwa_jewexobevul_zelaketowos.pdfIn PDF document text
    • https://sovopedu.weebly.com/uploads/1/3/5/3/135301682/9455996.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tuzamada/foxogoximajumo.pdfIn PDF document text
    • https://s3.amazonaws.com/wutezigojuxi/57402983215.pdfIn PDF document text
    • http://badokelo.rf.gd/patof.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_off0000b15e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB15E 5476 bytes
SHA-256: 87a40bbd8f758ad03e7cb8706f88d1caee8dab53c1eab6ca9f643edd84975353
font_01_sfnt_off0000c3da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC3DA 10548 bytes
SHA-256: 18de77e6d5af11367199d8f9e689fa3b785961d239249f4a314bc945af330b60