Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ac8b996c9518ebd…

MALICIOUS

PDF

71.1 KB Created: 2021-02-28 21:09:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 72c2c33a3aa17a5ed99e27b9b5a58588 SHA-1: 3f26e2c1d7cecbf7ede7a0ab4234eaf6ba3aec0f SHA-256: 4ac8b996c9518ebd7a88cef2535089dcec931ad65e18744d959f41d5ed670032
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://bologen.ru/wix?keyword=two+rivers+golf+course+tn PDF link annotation
    • http://nimolebefiv.22web.org/61226042667.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420915/normal_5fd6439d214e9.pdfIn PDF document text
    • https://fasitidepev.weebly.com/uploads/1/3/4/3/134312072/e05b9410f6.pdfIn PDF document text
    • https://ponozivodu.weebly.com/uploads/1/3/0/7/130775347/sovep_lesuzib.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381964/normal_5fd60fd073f7d.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369302/normal_600513b045bcb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409826/normal_5fd5fb91dfc39.pdfIn PDF document text
    • http://jivusibofonefud.mygamesonline.org/mogezakiliwijunafuxonasor.pdfIn PDF document text
    • https://visimekariluvog.weebly.com/uploads/1/3/1/4/131483525/8dd9d9192aa6e.pdfIn PDF document text
    • http://ita-talia.fun/safety_plan_domestic_violence_templatel3b2q.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4392868/normal_5fcd019b85c61.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421050/normal_5fef702267436.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418175/normal_5fd8b89b007f4.pdfIn PDF document text
    • https://fejamelaluboj.weebly.com/uploads/1/3/4/3/134311679/biwisir-dugijimezenapin.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://muzonupifubofe.rf.gd/listening_test_2_transport_survey_answer.pdfIn PDF document text
    • http://faxiruvud.myartsonline.com/fikadus.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_off0000da91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA91 4940 bytes
SHA-256: 82dde57931be29a1a2031ce25c3b9415c1a6f7c8aecbce53eb61e5f742725db2
font_01_sfnt_off0000eb94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB94 10620 bytes
SHA-256: 07113be87eccd0ba125639023148b4a634a45896a84de6f2289db93ce9f355e3