Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd6b8247a20a3f8e…

MALICIOUS

PDF

62.2 KB Created: 2020-11-09 16:42:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 12caba535c827ad9af3111615d599054 SHA-1: a3dbf5fcce5783fd8826378cf5b2e5754e971f94 SHA-256: cd6b8247a20a3f8e74d4df4170b0ddc0620146c1038a88f81150e3b84edfb18e
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/aws?keyword=shred+10+guidebook PDF link annotation
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/4041939.pdfIn PDF document text
    • https://dubuzosokiboxof.weebly.com/uploads/1/3/1/1/131163723/pewatijosasag.pdfIn PDF document text
    • https://mutazodot.weebly.com/uploads/1/3/0/8/130874237/watid_xasujukametula_lujawuxugo.pdfIn PDF document text
    • https://zufugorutamivas.weebly.com/uploads/1/3/4/4/134401118/sojipuxejeseduz-zugejo.pdfIn PDF document text
    • https://kajipeluvo.weebly.com/uploads/1/3/4/3/134318391/4717174.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413346/normal_5f973fc032ff0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369656/normal_5f87d2a4d36e1.pdfIn PDF document text
    • https://fidegobopoj.weebly.com/uploads/1/3/2/8/132815019/4138109.pdfIn PDF document text
    • https://mogezisatizate.weebly.com/uploads/1/3/0/7/130775403/f664a0a7e.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/3b71519d-60b6-4e09-9974-b3edc20436ba/a_small_place_jamaica_kincaid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aaee3885-0595-4236-bb5d-e510fc39d849/80286959725.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009afc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AFC 5168 bytes
SHA-256: fb63bda060d2003e47915d56c01b14453fe1af2ad69a6725d6a71566de5388c7
font_01_sfnt_off0000ac93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAC93 10488 bytes
SHA-256: ab2098bb48e523c02b3d4ed9840e769e0455d3c63bce92d0615729c9fd21fecb
font_02_sfnt_off0000d0bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD0BD 17900 bytes
SHA-256: bc7a008511a43f2c5d247864afaccaeef957668c4034249dda530f5568e42130