Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ca83792bd7bcdf5…

MALICIOUS

PDF

47.7 KB Created: 2020-11-07 19:21:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 166df3838e5a7753ef4b5a144e82436f SHA-1: bfd48cd3dc9c75a89742afa72ecb3ddd7a72addd SHA-256: 5ca83792bd7bcdf5bba0618a50646b6fc04375a06a8e015d5a6c632b3f3e77f5
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://trafffe.ru/123?keyword=ifruit+app+gta+5 PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4391599/normal_5f9ce09a94b61.pdfIn PDF document text
    • https://sazojowob.weebly.com/uploads/1/3/4/3/134351878/7c1fcecd.pdfIn PDF document text
    • https://defutijobazaso.weebly.com/uploads/1/3/4/5/134587482/4603f.pdfIn PDF document text
    • https://vemetufubejukat.weebly.com/uploads/1/3/4/3/134367776/9eefcc08b2190.pdfIn PDF document text
    • https://jiketajaw.weebly.com/uploads/1/3/4/4/134464131/mudetinugab.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1639d2e-2b85-4ec1-9e30-ccb942462f28/28884924645.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/16a09cdf-fe78-4b9a-aa71-077e386e2004/atomic_structure_review_sheet_answers.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f77a9e0b-f478-487a-a4b9-b330e6f93033/tixapugibe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d5ea73d6-bd42-4e8f-888b-28d0d41d2546/tosuxovopukonikabafogixo.pdfIn PDF document text
    • https://s3.amazonaws.com/dazifozixawus/ddo_cleric_build_guide_walkthrough_part_1.pdfIn PDF document text
    • https://s3.amazonaws.com/putelekireza/ann_taylor_interview_questions_and_answers.pdfIn PDF document text
    • https://vesituguz.files.wordpress.com/2020/11/47052364774.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000065e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65E2 4920 bytes
SHA-256: e7aab4d099222cdb73127e2cd9e82988309252c647a9dd81071739d33dd37266
font_01_sfnt_off000076bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76BB 10924 bytes
SHA-256: 18829eb0280b730c0488623badcd9b5197f1345c602916b43a48b8582de34f50
font_02_sfnt_off00009bc8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BC8 16060 bytes
SHA-256: 99ddc6f5858eb134f8024171ebe717cbd02485c31471b921a5021903b5272953

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