Malicious PDF — malware analysis report

Static analysis result for SHA-256 5166244af1651790…

MALICIOUS

PDF

45.1 KB Created: 2020-10-28 17:13:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 99dc48fa676bb4814d189c30bb8b3e37 SHA-1: 9a6ecc830a40be5dd04d6d1b0040b1769edf7a30 SHA-256: 5166244af16517905b1cf83cc234be6502496cf32509c6323153f1b73a51b8a8
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.me/123?keyword=how+to+put+a+worm+on+a+hook+for+catfish In PDF document text
    • https://medizagokitoni.weebly.com/uploads/1/3/2/3/132303310/2145604.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380382/normal_5f8b4b3755e79.pdfIn PDF document text
    • https://xipunozelizu.weebly.com/uploads/1/3/1/3/131382486/6773697.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/3373854.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383688/normal_5f8e4764abb70.pdfIn PDF document text
    • https://gelekale.weebly.com/uploads/1/3/4/2/134266195/ff8cf8.pdfIn PDF document text
    • https://mogilifus.weebly.com/uploads/1/3/0/7/130739831/bosilo_ginasesif.pdfIn PDF document text
    • https://jubunukaf.weebly.com/uploads/1/3/1/4/131483214/8317509.pdfIn PDF document text
    • https://botubadixebom.weebly.com/uploads/1/3/1/4/131407995/1422683.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383922/normal_5f91f772deeb2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375355/normal_5f8eb4c13ac37.pdfIn PDF document text
    • https://jijalasigode.weebly.com/uploads/1/3/4/3/134344414/lagipawiwar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369327/normal_5f8d0a7a64e93.pdfIn PDF document text
    • https://vajuwapokovis.weebly.com/uploads/1/3/4/3/134361820/9c8c7e.pdfIn PDF document text
    • https://megadezatesaram.weebly.com/uploads/1/3/0/7/130776649/fezimexebitodugivife.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/a8416d9b-25dc-40e7-849c-792eb7f82bbd/kingsman_the_golden_circle_english_s.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0486/3767/3630/files/18219994350.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c4b9ee33-e004-4975-800b-8956597ab896/79740560418.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0480/8759/7220/files/dolitobutapefexenejorus.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/97ffbfdb-c920-4d10-a9ed-8e722254f5b4/rogokopixovikefukusekitu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6764/5852/files/dexisobifivuvelujapoxobag.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9c296446-8e7f-4edd-80a3-fdcdcfc723da/86938364124.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/6844/9180/files/lamona_integrated_dishwasher_door_fitting_instructions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6ad12fb2-6ced-46e0-8616-00e9a2eae958/fagorejobakuro.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_off00006fe9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FE9 5340 bytes
SHA-256: acf98c491fc4bfa72f2b248885932155d8f2d3dfef925f817c918db67cb2401a
font_01_sfnt_off000081ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81FF 10884 bytes
SHA-256: bee8ac1d1cf869a4078bc33a93fddc72caeac93a805f2ce420c543abf9f62799

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