Malicious PDF — malware analysis report

Static analysis result for SHA-256 736e1120900d424d…

MALICIOUS

PDF

74.5 KB Created: 2021-02-13 05:34:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 573781f4964f4da4ab3115e4502ad408 SHA-1: d4c0425c8f5c07e27da4c87ebd72f7869871ced2 SHA-256: 736e1120900d424d7c650999cc72320dabfff1776b8dc93a9d6268b177be2aab
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://bologen.ru/123?utm_term=lg+slider+phone+2009 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4443619/normal_5fdb56fc68fcb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406473/normal_6022bc08351f1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393485/normal_5fe91e9ac7c23.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443325/normal_6019842fc1ffb.pdfIn PDF document text
    • http://operationhomeplate.com/the_trial_franz_kafka_themesim79b.pdfIn PDF document text
    • http://tazijiga.22web.org/89679951270.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4405925/normal_6001bbe3f0e24.pdfIn PDF document text
    • http://wotasabe.22web.org/pavevarukumugedobamezuve.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481552/normal_6024f70c1e9c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420765/normal_5fdaf82c6a538.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379380/normal_5fe1ef59e949e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382193/normal_5fe981d06d756.pdfIn PDF document text
    • http://ketrovk.xyz/libros_sobre_plan_de_negocioso4o82.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kosuvoz.epizy.com/accra_technical_university_forms_cost.pdfIn PDF document text
    • https://s3.amazonaws.com/lebaxa/transient_ischaemic_attack_nice_guidelines.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_off0000e221.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE221 5384 bytes
SHA-256: 17bd5e512f0d0441569b200ec6693571d25bc18703204220ce42d1d0c61874c6
font_01_sfnt_off0000f474.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF474 11616 bytes
SHA-256: 79990d6a94100352884a8934b7f9cdd4f126cc09ce633b693f89d62cbee260f2