Malicious PDF — malware analysis report

Static analysis result for SHA-256 b7891dc1eec4f45c…

MALICIOUS

PDF

69.3 KB Created: 2020-11-11 11:42:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 8bcb75aff2203c65781ada3c648c965d SHA-1: 71d801f51d151ad55f9f373700f71a4083a8b97c SHA-256: b7891dc1eec4f45cd778b199858afaffb2195dc846a9da3bf5d265bfc47b1fd5
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/123?keyword=magellan+roadmate+5635t+lm+manual In PDF document text
    • https://jarapitoxedomel.weebly.com/uploads/1/3/1/4/131437170/c2222271.pdfIn PDF document text
    • https://natizupasa.weebly.com/uploads/1/3/1/4/131437725/932c0c7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460477/normal_5fa150155aee9.pdfIn PDF document text
    • https://tipefejiri.weebly.com/uploads/1/3/0/9/130969755/pefojexusovok_xuvutapesaguja_ribexirawokume_tagebeteluvif.pdfIn PDF document text
    • https://polabufasol.weebly.com/uploads/1/3/2/8/132814050/buvazil.pdfIn PDF document text
    • https://notilapixoto.weebly.com/uploads/1/3/4/3/134397855/manusit.pdfIn PDF document text
    • https://remewizefo.weebly.com/uploads/1/3/1/8/131856163/4eb7db505c83f.pdfIn PDF document text
    • https://mefemanodi.weebly.com/uploads/1/3/1/4/131454269/rukoj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381094/normal_5fa43c33239dd.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/wilugugo/49236393728.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/70201189942.pdfIn PDF document text
    • https://s3.amazonaws.com/kudufigunabi/96393669588.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/manual_install_cricut_explore_air_2.pdfIn PDF document text
    • https://s3.amazonaws.com/posufij/nexus_2_free_download_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/xeponodij/58548767882.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_off0000d012.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD012 5412 bytes
SHA-256: ad589280485687b8387f279f2678680e6b29836ef25e2150cb00751b638241a7
font_01_sfnt_off0000e271.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE271 11140 bytes
SHA-256: a637cb4bf3e84e29850aad118553ac4324dbde71a76fbf07c88555d2fc31608b