Malicious PDF — malware analysis report

Static analysis result for SHA-256 740c3b36afb494c0…

MALICIOUS

PDF

52.0 KB Created: 2020-11-08 05:52:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 87517dbcebadd30c38e10e94f0fe57ad SHA-1: fa23acc0aa215bb43e940def7763eecab958a9d8 SHA-256: 740c3b36afb494c00858c1059846fb5047a6db22c3a2a6d552a36938b6704f0f
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://traffset.ru/aws?keyword=satanism+pdf+zionism PDF link annotation
    • https://sazalilo.weebly.com/uploads/1/3/4/5/134592982/29564cd48.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://kizikobir.files.wordpress.com/2020/11/rukupufikowoxaguxurotisa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f412845d-e80c-41b0-bafa-cb16bb1c3c6f/57719263313.pdfIn PDF document text
    • https://jevuvibojaz.files.wordpress.com/2020/11/manivifabudatamemevug.pdfIn PDF document text
    • https://jevazime.files.wordpress.com/2020/11/el_quinto_hijo_doris_lessing.pdfIn PDF document text
    • https://vumizekajuri.files.wordpress.com/2020/11/99178441060.pdfIn PDF document text
    • https://sojofepep.files.wordpress.com/2020/11/troy_bilt_47321_chipper_shredder.pdfIn PDF document text
    • https://vadazigifexe.files.wordpress.com/2020/11/gopiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a018cf2-c8af-42f9-adca-82a7abefe5d3/bubezanerutotelojule.pdfIn PDF document text
    • https://suvarofora.files.wordpress.com/2020/11/95519257918.pdfIn PDF document text
    • https://somopewikiga768872658.files.wordpress.com/2020/11/walking_dead_colouring_sheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/efa99971-1006-4b18-ae9a-deb94354cdc1/haukke_manor_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2a77dc02-7bce-4061-94f2-691c8429ff2c/nyx_powder_blush_in_apricot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fe745459-2e8a-4e17-a6b3-30a2e3267478/cereal_meme_face.pdfIn PDF document text
    • https://mixuxikorar.files.wordpress.com/2020/11/nagenigu.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00007faa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FAA 4884 bytes
SHA-256: 2543b010803033aa3458ad1a7e35d63c26d918ec66e7906df98c6087a0e55513
font_01_sfnt_off00009025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9025 10848 bytes
SHA-256: c31abdf4c1951ba98b685a188a1eecd936a86cb7ef7f7d04093cfc3abf928233
font_02_sfnt_off0000b523.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB523 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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