Malicious PDF — malware analysis report

Static analysis result for SHA-256 9243c846d9c8201a…

MALICIOUS

PDF

50.5 KB Created: 2020-11-08 05:06:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: b0b68a39bfad143d3f2dba05d3272e68 SHA-1: 0525d691aaf4a6503d2baa594a76291749c7952e SHA-256: 9243c846d9c8201a70c8331bcd991bd38c1eedd52cec5ce16c6afa922539ae85
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://trafffi.ru/123?keyword=witchery+mod+wiki PDF link annotation
    • https://linoratu.weebly.com/uploads/1/3/4/4/134403550/xovawup_dexinaxupuro_debuwofisijojal.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/togiluxafik-kipesegeluwedas-juwisoxoweruzi.pdfIn PDF document text
    • https://siminanora.weebly.com/uploads/1/3/4/6/134611077/sususuvomid_gikerezefafanu.pdfIn PDF document text
    • https://worozimovazez.weebly.com/uploads/1/3/1/4/131406108/murunof.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://fidunonip.files.wordpress.com/2020/11/madelizopididam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6420fecd-4b0b-4355-8781-d0a9690b87f1/happy_wheels_swf_download_full.pdfIn PDF document text
    • https://s3.amazonaws.com/fadedosi/44752012224.pdfIn PDF document text
    • https://desoputuwi.files.wordpress.com/2020/11/acceptance_and_commitment_therapy_for_ocd.pdfIn PDF document text
    • https://bakiriro.files.wordpress.com/2020/11/conduction_heat_transfer_book.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/edi_reference_guide_for_healthcare.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d38dc38e-eca3-48cb-b893-4610d3435e31/tejojojikinuse.pdfIn PDF document text
    • https://s3.amazonaws.com/sevoga/green_pasture_cod_liver_oil_uk.pdfIn PDF document text
    • https://vozemuzu.files.wordpress.com/2020/11/88669580324.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f91ec41-e4dd-4e92-b2b2-a819c5b33a4e/25969479734.pdfIn PDF document text
    • https://sudufafi.files.wordpress.com/2020/11/wuvixalojekurimaluxi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f750b870-5def-4255-888b-9224a0b79f98/jimurefipon.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000064c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64C0 4712 bytes
SHA-256: 0d5a07de66c53ab2f152e4546055bb7861032ebf75c1875c96f1f1f314715bf7
font_01_sfnt_off000074d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74D9 11240 bytes
SHA-256: 312cff6a3bc640a60c5ec28b8df5e7d40763c26dd6e690594a7037d58b9ac484
font_02_sfnt_off00009a0a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9A0A 16104 bytes
SHA-256: c72ca0970d51b0a8ad78cefeb5ce5696832e14da31bd2128a4ba9c3d04a16bf4
font_03_sfnt_off0000aecb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAECB 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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