Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bd6725c6b94c301…

MALICIOUS

PDF

39.9 KB Created: 2020-11-08 08:32:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: f30c34ee513d971da9fad7ff689caa05 SHA-1: 808ccd58d53eca131145fb3ad01d80879fce15e7 SHA-256: 6bd6725c6b94c301d50c015ea9296358d1613440c77e0ca7327975b17cd54640
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/aws?keyword=muscles+of+the+back+and+arms PDF link annotation
    • https://texolobalow.weebly.com/uploads/1/3/4/5/134597330/tonig.pdfIn PDF document text
    • https://tekadepaja.weebly.com/uploads/1/3/4/3/134341299/xurapenidawojupe.pdfIn PDF document text
    • https://zafigitelerom.weebly.com/uploads/1/3/4/3/134338481/juxam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386335/normal_5f8f19dc41b40.pdfIn PDF document text
    • https://wunimebi.weebly.com/uploads/1/3/4/3/134361225/nufopamag_kagax_xiwobidug.pdfIn PDF document text
    • https://zepitobazelaki.weebly.com/uploads/1/3/4/6/134619491/8984901.pdfIn PDF document text
    • https://saxibodusazo.weebly.com/uploads/1/3/0/7/130740440/xarizumukofafo-gelenagimufixiv-mulogul-fajovodedagikir.pdfIn PDF document text
    • https://zadujemerumid.weebly.com/uploads/1/3/2/6/132695269/suluriteligalimatus.pdfIn PDF document text
    • https://dawugagulinejud.weebly.com/uploads/1/3/4/3/134368664/xapegegena.pdfIn PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/sipatoxitodabu.pdfIn PDF document text
    • https://duvupobilalef.weebly.com/uploads/1/3/4/6/134630448/nusizunivowusewu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445326/normal_5fa0f9f379a5a.pdfIn PDF document text
    • https://zavomafig.weebly.com/uploads/1/3/4/3/134356936/b3c4ae169fef.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/rizezobabub/garmin_alpha_100_manual_tt15.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/til_we_meet_again_1940_cast.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_off00005fef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FEF 5468 bytes
SHA-256: 036ec3c24f0fcfba68a35c5de3e0ab7bc9680ec08edad8e0bc53ac143e34ce0e
font_01_sfnt_off0000726c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x726C 9504 bytes
SHA-256: 2ca549c48c09df0577d430052991ca25e8bf88b4e6b0a44bf0652b0f2635fe18