Malicious PDF — malware analysis report

Static analysis result for SHA-256 772899a4c6a7bf79…

MALICIOUS

PDF

37.0 KB Created: 2020-11-09 05:58:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 9f0ddcef31fa232dfebc9e4adf834ec0 SHA-1: 2294e5ebead79f49aae90f5ab6a49419916a8bef SHA-256: 772899a4c6a7bf79a4afd9a6b0d6b04ac28dea8a8c7b650ef6bcc1dd2986e457
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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://traffset.ru/123?keyword=dinamap+100+service+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4386842/normal_5f9076a76ad28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374689/normal_5fa4ae22343bf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382420/normal_5f996b124c7a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387229/normal_5f91ad63d4e85.pdfIn PDF document text
    • https://baresifesej.weebly.com/uploads/1/3/4/1/134131831/708824.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370073/normal_5f967340cd75b.pdfIn PDF document text
    • https://bififofivajarat.weebly.com/uploads/1/3/4/3/134315789/7053770.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378599/normal_5f91901b52659.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://sugadoden.files.wordpress.com/2020/11/35251723769.pdfIn PDF document text
    • https://vadazigifexe.files.wordpress.com/2020/11/merozasopegujibe.pdfIn PDF document text
    • https://desoputuwi.files.wordpress.com/2020/11/vuela_a_tu_libertad_alfonso_lara_castilla.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dfe174a3-d037-415f-aba2-e8ecfd45d6d7/97311123882.pdfIn PDF document text
    • https://danopoxuvava.files.wordpress.com/2020/11/72082465609.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/96762b00-5044-4e55-8973-62270c9a75ce/schroeder_thermal_physics_solutions.pdfIn PDF document text
    • https://zatejoru847961968.files.wordpress.com/2020/11/72489844693.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_off0000541e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x541E 5332 bytes
SHA-256: a3c0c6cd327aa7f557817fc9925d1c58433c28826ead22bc05fbee9a57448701
font_01_sfnt_off0000663c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x663C 10380 bytes
SHA-256: 37b0166b0b3bbfa0abced2d7f4e1a5816289e50112eb4e4219dae7bbf6eb3555