Malicious PDF — malware analysis report

Static analysis result for SHA-256 229b4cdc30175856…

MALICIOUS

PDF

75.1 KB Created: 2021-02-12 00:37:22 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: b84e128206aca45234e72fd715bd279d SHA-1: 110a70f5c92c807908d8f403eff962d27b39545f SHA-256: 229b4cdc301758568492cacd318c8fc3f87ffd841c4314a6952e1b530515c3e7
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • 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 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://baarspo.ru/wb?keyword=php%20ajax%20post%20without%20form PDF link annotation
    • http://blaugrana.ru/terogeledudegateduwjlrc.pdfIn PDF document text
    • http://fb-ig-violation.com/89744715764prtuw.pdfIn PDF document text
    • https://lepekogiba.weebly.com/uploads/1/3/1/6/131637498/lulitokaga.pdfIn PDF document text
    • http://good-production20.site/66010315147tbt6s.pdfIn PDF document text
    • http://rezotu.xyz/best_starter_brawler_in_brawl_stars9n96h.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403283/normal_5ff9c1a49b9c2.pdfIn PDF document text
    • http://medyayazilimtr.com/jofafaxojitudegigowa7faye.pdfIn PDF document text
    • https://sufifova.weebly.com/uploads/1/3/4/7/134736026/b1220c.pdfIn PDF document text
    • http://lienforkid.com/58034669175sbco7.pdfIn PDF document text
    • http://alteramaks.world/furniture_mod_for_minecraft_pe_1._12._0561ke.pdfIn PDF document text
    • https://bewodopogogubak.weebly.com/uploads/1/3/4/8/134886142/rivozojoduponelarig.pdfIn PDF document text
    • https://wawotisusuwo.weebly.com/uploads/1/3/2/7/132741293/9467653.pdfIn PDF document text
    • http://copyright-services-us.com/meropotexizxkxku.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446038/normal_5ff0637c937c8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453719/normal_60224a7c4666a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e4ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4AE 5348 bytes
SHA-256: f6a7805bdd5d3b11d9fbb12ee2fff39d84af144ab2b7c76362f606baf8da6f29
font_01_sfnt_off0000f6cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6CF 12340 bytes
SHA-256: 5743b4fcad2187131da151d59ceac42f61bfd9b6df020fcc8dab678d7849358e