Malicious PDF — malware analysis report

Static analysis result for SHA-256 08092c4d41657bfa…

MALICIOUS

PDF

44.3 KB Created: 2020-10-17 07:10:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 1785368822e600ab4f9a413a58f1d629 SHA-1: d7ad75c2ffd6af4302a0a262c36660dd83b30fd6 SHA-256: 08092c4d41657bfa31a7745b78b37faf611e188c9fb78bfcee5478abf160b261
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.cc/123?keyword=warhammer+40k+urban+conquest+pdf+vk In PDF document text
    • https://vatipasa.weebly.com/uploads/1/3/0/7/130775610/554b59bb.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/rotesojelunemiroto.pdfIn PDF document text
    • https://zisokilusativ.weebly.com/uploads/1/3/2/3/132303079/c2126804ad26.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366034/normal_5f88b6dc22cc9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369936/normal_5f89cf42a469f.pdfIn PDF document text
    • https://tunomofezu.weebly.com/uploads/1/3/2/3/132303147/wawesu_xidavu_pawunudug.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/ligewajinaxi.pdfIn PDF document text
    • https://tejigenunonim.weebly.com/uploads/1/3/0/8/130813632/8869537.pdfIn PDF document text
    • https://walijogopabo.weebly.com/uploads/1/3/0/7/130776167/efbc0c4c2650cc4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365583/normal_5f87188197484.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370078/normal_5f8a2f582e850.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365525/normal_5f872bf3d7bfe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366005/normal_5f89a9e0a6430.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366982/normal_5f87bea22458b.pdfIn PDF document text
    • https://fidegobopoj.weebly.com/uploads/1/3/2/8/132815019/79aeb0e.pdfIn PDF document text
    • https://gewosawoma.weebly.com/uploads/1/3/0/7/130739201/173668.pdfIn PDF document text
    • https://sovopubi.weebly.com/uploads/1/3/0/7/130775052/7164776.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0491/7893/5448/files/pewabesaxisopesasulumi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0488/3437/9941/files/rubapazexakigidusilip.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8079/4780/files/monster_legends_apk_hack.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0479/0216/3110/files/diario_sin_fronteras_digital.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/3332/8278/files/nenowifolo.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_off00006b6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B6B 5996 bytes
SHA-256: 5761c253a547be481e52d5bcecbb09ccb9603d7eb2f5e083e44b0fda60cf321e
font_01_sfnt_off00007fb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FB9 11008 bytes
SHA-256: 65655891ae2c05024df67bfa9f69db56e5cbb34984cece2c7b81ba024144de4b

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