Malicious PDF — malware analysis report

Static analysis result for SHA-256 faac570b93a18ba6…

MALICIOUS

PDF

51.6 KB Created: 2020-11-06 22:15:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: b0d4543ab32478d7edb6825a3e94ba88 SHA-1: 5b7df2a86f5275265c27377d9f83fa086d0217cb SHA-256: faac570b93a18ba63bbde39bd1c8e0b8c04aee19b1edd9e9c846ec009530fbb1
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://trafficel.ru/aws?keyword=borderlands+torgue+actor PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420934/normal_5f9ad11cd8cc9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409413/normal_5f9faa787f0d7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415964/normal_5fa0457de4b9f.pdfIn PDF document text
    • https://texitanoz.weebly.com/uploads/1/3/0/7/130739996/nutokekelomalek.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374848/normal_5f932d384f53f.pdfIn PDF document text
    • https://ruxibero.weebly.com/uploads/1/3/4/4/134403554/2912115.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377114/normal_5f992283b44fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380539/normal_5fa4ac3c12b80.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375907/normal_5f8d96f467b41.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://kuwilalo.files.wordpress.com/2020/11/zelijego.pdfIn PDF document text
    • https://jalekep.files.wordpress.com/2020/11/29751184955.pdfIn PDF document text
    • https://sakemepog.files.wordpress.com/2020/11/67565836457.pdfIn PDF document text
    • https://nizowowe.files.wordpress.com/2020/11/midesifitir.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/127ff9e7-619c-45f8-9c4c-6594c9fbc28a/zokegetanowib.pdfIn PDF document text
    • https://gawazufe.files.wordpress.com/2020/11/mulesekuwo.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_off00006475.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6475 5156 bytes
SHA-256: c535e89f473be1b62be58460c4d7e62f056d05ef6cafce4d4255491e42814487
font_01_sfnt_off00007602.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7602 1896 bytes
SHA-256: 8f5b3ab956c74815cbd4748e930e58c959a8e1318948e1b8beed9917b60a91bc
font_02_sfnt_off00007f2f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F2F 13508 bytes
SHA-256: 622931ea5a5723717acb359aef2953b3af31fb4829e600021d6c0c55947e36dd
font_03_sfnt_off0000aaff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAAFF 16376 bytes
SHA-256: b0d49487e416824f653b5bb87a9b1859397ba4b010499a7ad48bb1133e68eee1

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