Malicious PDF — malware analysis report

Static analysis result for SHA-256 fad3da66f5b8108b…

MALICIOUS

PDF

65.4 KB Created: 2021-03-02 01:38:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: e2bf71d79d8fb4c4493ce84cd0364e2d SHA-1: 1718cb5b3ec51b0dc38ceb0be82af9cb2ba636ef SHA-256: fad3da66f5b8108b66f904f0fe2fc47930a7e0ce823c40676653a4e0ff93ae48
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://soxebez.ru/wix?keyword=city+mini+double+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4408009/normal_600cafd68daad.pdfIn PDF document text
    • http://fomilexavekol.22web.org/human_impact_on_natural_environment.pdfIn PDF document text
    • https://sunozidugeb.weebly.com/uploads/1/3/4/4/134486191/2873997.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471948/normal_600d8ced11abb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366024/normal_6035e2ce16ea4.pdfIn PDF document text
    • http://mimamiva.iblogger.org/central_dogma_activity_worksheet.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455405/normal_6018c7bb9a372.pdfIn PDF document text
    • https://dimafaxatabevex.weebly.com/uploads/1/3/5/9/135991177/sizavudipesupa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402486/normal_600dddf65c113.pdfIn PDF document text
    • https://jimivisimobud.weebly.com/uploads/1/3/4/9/134901817/wawitarejik.pdfIn PDF document text
    • https://bajorenurelop.weebly.com/uploads/1/3/0/7/130739037/1d0b1f359d2b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tusuwen.rf.gd/cognitive_behavioral_therapy_interventions_for_depression.pdfIn PDF document text
    • https://s3.amazonaws.com/dobikasukavu/chapeuzinhos_coloridos.pdfIn PDF document text
    • http://pamiwumewamem.epizy.com/lokibogup.pdfIn PDF document text
    • http://rivapuremamoge.epizy.com/business_cards_psd_layered_free_s.pdfIn PDF document text
    • https://s3.amazonaws.com/palevijuj/14692571092.pdfIn PDF document text
    • https://s3.amazonaws.com/buxoparadazegu/resistance_and_reactance_of_transformer.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_off0000c76b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC76B 4844 bytes
SHA-256: b1b54ca53b0cbfcfd86419f3425c368b3ca596e0d78d6d13eab777019931bbd5
font_01_sfnt_off0000d7d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7D2 9596 bytes
SHA-256: da6c74969cf4421a65bc22c825504f8a0c3a77d0e30e5e44f1efc0579dd76ce2