Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b65980d0fe2b9b3…

MALICIOUS

PDF

42.7 KB Created: 2020-11-08 14:44:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 7e67b2ac62422bd94bd5be171ae8db7f SHA-1: c695ad967af7c53ee2ec561a0bbfec43910a7a20 SHA-256: 6b65980d0fe2b9b3573fa9264053c26b8d45b07d48cad91488facd254be138fc
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=barbosa+lake+santa+cruz PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4368767/normal_5f8bafd00769b.pdfIn PDF document text
    • https://ruwalabipuges.weebly.com/uploads/1/3/4/4/134465281/d746d1c39bdda.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4456391/normal_5fa391be6e752.pdfIn PDF document text
    • https://dorubirema.weebly.com/uploads/1/3/4/3/134317311/gofejepevisivo_dalasuba.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/812da15a-78b1-48c5-a101-972bba54934a/77143062757.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6428594-c425-4773-b3ec-aad83a56b0e9/jufokotidivolu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f9edc4e-580e-4728-a9a7-66f5251a6382/23670544804.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fd648d0-084d-42ec-9014-da4ab6722c5c/22826928687.pdfIn PDF document text
    • https://xelinatuki.files.wordpress.com/2020/11/12873235441.pdfIn PDF document text
    • https://tafexoru.files.wordpress.com/2020/11/3294531957.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e87e0449-a1af-446a-9b54-89e96bb5ca20/xebukukisi.pdfIn PDF document text
    • https://zikivep.files.wordpress.com/2020/11/56664064325.pdfIn PDF document text
    • https://sejopaguvit.files.wordpress.com/2020/11/vir_die_voels_soundtrack_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/536b7b25-2ed8-437d-8e6e-a940739bc904/45081437468.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_off00006580.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6580 5096 bytes
SHA-256: c99e7905265f82ed033a7eb08b5fc37e4cb1406b20b46c091cfa294b179f1cde
font_01_sfnt_off000076e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76E7 11768 bytes
SHA-256: 22719ed23bc94d22035d547bc8e3b3add44695ef3d6b7b37b6e5c5c25ec5297b

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