Malicious PDF — malware analysis report

Static analysis result for SHA-256 50e7114134a69810…

MALICIOUS

PDF

67.6 KB Created: 2021-03-03 09:46:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a1759a88b1e394fcd9d7e6d437028cfc SHA-1: e833184c225e27f0ba65f33b859666fbd1ee19e3 SHA-256: 50e7114134a698102476b22c8ddeb0cc3cb9d03a2510207df6da7dcc50a149c5
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://vilenefex.ru/award?keyword=dymo+letratag+refill+black+tape PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4447649/normal_603a8b6d290da.pdfIn PDF document text
    • http://vannabanyavsedela.xyz/answer_sheet_samplesmes7.pdfIn PDF document text
    • http://doxalasi.mywebcommunity.org/epson_expression_xp_6000_ink_cartridges.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493578/normal_5ff1703d7f84a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464056/normal_6020908c8c48a.pdfIn PDF document text
    • http://mugedly.xyz/gigipuxoxemuzedekutitasitrj0dt.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490974/normal_600a1f98507b9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497666/normal_5ffebc4270fb8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367297/normal_5ff228d42f29f.pdfIn PDF document text
    • http://lasns.fun/36397549503tftrr.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://figabubif.rf.gd/biology_books_online.pdfIn PDF document text
    • http://xolavozezimodan.onlinewebshop.net/wizards_of_the_coast_entry_level_jobs.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000bf51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF51 5144 bytes
SHA-256: bb186e7a6216b9a5b1dc1fd404a5b8ea7af47f03abf2737b292699016bf6de9c
font_01_sfnt_off0000d0eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0EB 9840 bytes
SHA-256: f342b757822b3e195d3664af01d50048a877287b26b9bf545e3415708cedd2f7
font_02_sfnt_off0000f26f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF26F 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361