Malicious PDF — malware analysis report

Static analysis result for SHA-256 3359d48b4744c58b…

MALICIOUS

PDF

71.4 KB Created: 2021-02-14 08:32:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: bf52f172c8729b2ce854da2650c2c788 SHA-1: 274a023e16ef848e849254bc7dd9b70f4993d083 SHA-256: 3359d48b4744c58bd2780d455a6535cd56c72594d07d14539a68965bf08a8e37
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://jottigo.ru/aws?utm_term=aiou+online+admission+form+spring+2018 PDF link annotation
    • http://saganofodevuset.22web.org/ignou_b._ed_application_form_last_date.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391623/normal_5fd3777b19ed8.pdfIn PDF document text
    • http://lanufutado.22web.org/24852095159.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447270/normal_5fd68048af459.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4468536/normal_5fd66f7c65f97.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4478669/normal_601a84bf5d204.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4371524/normal_5ffc0d419f81c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pasigajixivete.epizy.com/portfolio_design_architecture.pdfIn PDF document text
    • http://fenigubigona.epizy.com/outlook_2013_calendar_tutorial.pdfIn PDF document text
    • http://mevomum.epizy.com/20816183452.pdfIn PDF document text
    • http://kitukogoxav.epizy.com/dilipolatovirexafubewoxu.pdfIn PDF document text
    • http://mixonanax.epizy.com/jibenozaruxenima.pdfIn PDF document text
    • http://rabuvof.rf.gd/11525985384.pdfIn PDF document text
    • http://zisafarur.epizy.com/lagu_ashlee_alone_with_you.pdfIn PDF document text
    • http://parubixus.rf.gd/gipav.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_off0000d921.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD921 5868 bytes
SHA-256: 85d9e3d521613e7375727c7fddeec0df1f0458ed79a4088d8c160d4d44a55c25
font_01_sfnt_off0000ed0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED0A 10468 bytes
SHA-256: 7fd511f227eff6aa655359a430aab9902c93ba94e71f8b428bdd668edeada981