Malicious PDF — malware analysis report

Static analysis result for SHA-256 40a7e43391e006ed…

MALICIOUS

PDF

52.3 KB Created: 2020-11-06 11:02:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 5146228347806ec68e094e1caa0b9cd8 SHA-1: f664f190be6c3370642385122052c0682f10a1cf SHA-256: 40a7e43391e006edda96428dab04adc3633400713ecaa9190507deba761b30bc
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/123?keyword=onslaught+2+y8 PDF link annotation
    • https://tuzuwopibas.weebly.com/uploads/1/3/4/3/134316447/siwopumaga_sabazibutojul_talumox_duremijifatimat.pdfIn PDF document text
    • https://jukafubu.weebly.com/uploads/1/3/0/8/130874261/4755105.pdfIn PDF document text
    • https://sitiguzesamow.weebly.com/uploads/1/3/4/4/134401829/80684388.pdfIn PDF document text
    • https://bonujuvab.weebly.com/uploads/1/3/2/7/132740321/pubofuvizisef-ferimanuleb-sosurolonitiku.pdfIn PDF document text
    • https://woxomeze.weebly.com/uploads/1/3/4/4/134498023/759ae160c59.pdfIn PDF document text
    • https://wimixexaselu.weebly.com/uploads/1/3/4/3/134324609/pubowuliful.pdfIn PDF document text
    • https://voletiga.weebly.com/uploads/1/3/4/5/134501602/9415020.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.opentle.orgIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/ca1b5cdb-f6e2-4b11-b995-ddcd15632654/72290336142.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3557c838-e839-4478-910c-eeb8573a9e13/sarawafoponelubedewedu.pdfIn PDF document text
    • https://s3.amazonaws.com/godewumazek/culligan_water_softener_medalist_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cf009c6-9f65-4d1c-a823-23864fced4ff/how_to_create_stunning_digital_photography_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45fa61c6-ba0e-4357-bffb-8f7fc4bde169/pupimizitametugu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a8ed834-910c-4256-9f8d-b548cfc781b4/68510496991.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0ba377ee-ce4e-4ff8-b76b-8c4c134ef70d/.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/084a6157-134d-4378-b3de-710d681c6d99/dovevulitiganewaxatepon.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fad405f-6385-4359-800f-4c31916bc815/79265464753.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://www.gnu.org/licenses/gpl.htmlIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000072f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72F6 4912 bytes
SHA-256: 05f5d8439eaa72c06dab8f41a7662f4b8cf2d2b1bf2f63d6ba6786693c8fabe6
font_01_sfnt_off00008396.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8396 6272 bytes
SHA-256: d7a9bd4802b89644b7f3236b700f48e3aa8bec07f65e94ccbcced8d33baa218c
font_02_sfnt_off000093e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93E6 10368 bytes
SHA-256: 58370e94cca1661ded89c9d4d1e5277486fc52d74496fbd1647c73d763bab8de
font_03_sfnt_off0000b571.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB571 4324 bytes
SHA-256: ce7e2e230a41ba6fc2d7d2240890c8289d67876d84a3d076d67c0b48111c8230

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