Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5f34a3ef49ba072…

MALICIOUS

PDF

42.8 KB Created: 2020-11-02 01:00:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 53639d9c9fcccd397c09d687748be06a SHA-1: d968180f6fe0b609333349fcdf87f7d80215dcf2 SHA-256: c5f34a3ef49ba072e86d55459b272e44e6c0f9fadd26a2237e5ef58cae1f1d3e
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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 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.
  • 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://ttraff.link/pify?keyword=synonyms+for+great In PDF document text
    • https://sanuvexugivi.weebly.com/uploads/1/3/1/6/131606490/kevokifisosasa.pdfIn PDF document text
    • https://rawebitor.weebly.com/uploads/1/3/4/3/134337567/tejevavuzixeb-gasep.pdfIn PDF document text
    • https://bizumoku.weebly.com/uploads/1/3/2/6/132681494/dotomuvizon-digupuwugedafu-gopewunudufutor.pdfIn PDF document text
    • https://dapobatajixafaw.weebly.com/uploads/1/3/4/3/134310280/25dc388b1.pdfIn PDF document text
    • https://moxetutatag.weebly.com/uploads/1/3/4/2/134234950/e0f2c.pdfIn PDF document text
    • https://jakedekokobara.weebly.com/uploads/1/3/1/3/131381480/10610.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369926/normal_5f8be96753c80.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000654c.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000654c.bin)
    • https://uploads.strikinglycdn.com/files/1b6e3ad1-6730-40c2-affa-82a214673ea2/primary_flight_controls_elevator.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d8d9f12b-1634-4078-900b-81732635d957/guzotovo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d509216-78e7-4c83-a30d-08d32ae5e41e/28271499431.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d3aeae9-db96-4307-9712-926d6980cba1/xelunijizefebanak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3c5b8eb-2528-487b-8dd9-551027f61037/sejulax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d543d6cb-cd20-4db4-b6db-4db019761bcc/68672337164.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 extracted file (font_00_sfnt_off0000654c.bin)

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000654c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x654C 5260 bytes
SHA-256: 0f099dcc911e8cc29ca459fabb8e1d3d02ee7697b67d83cb96c11ec5328fdb72
font_01_sfnt_off00007721.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7721 11900 bytes
SHA-256: 6ba73f584c81788eb3d101d8f95fb835f63d55bbfadbe538d357b3b74a1cde34

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