Malicious PDF — malware analysis report

Static analysis result for SHA-256 6628d5de5bebb072…

MALICIOUS

PDF

41.0 KB Created: 2020-11-08 22:15:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2022-06-20
MD5: 4a25464e9637f55a986e159ca4ed8d85 SHA-1: 214ecf29cb55ef9545f0e37e3739e46107e57903 SHA-256: 6628d5de5bebb0728a883e88b92bee89bfaf43c87fc57c71e92c1b732be954d7
66 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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=nikon+camera+parts+store PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4413375/normal_5f9b68f826bba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369304/normal_5f88c1e9d1cc7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368495/normal_5f883ce44082d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367311/normal_5f893c09700c2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409092/normal_5f95168365b76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372085/normal_5fa7a8e4980e4.pdfIn PDF document text
    • https://fozufamegevavup.weebly.com/uploads/1/3/4/5/134586639/sivozawobar.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://lodoxepal.files.wordpress.com/2020/11/reremuradivuvevedivogobid.pdfIn PDF document text
    • https://juvibix.files.wordpress.com/2020/11/gabizagamumarokidatanum.pdfIn PDF document text
    • https://noduvan.files.wordpress.com/2020/11/42913726097.pdfIn PDF document text
    • https://s3.amazonaws.com/tetofamuxulil/tubinivi.pdfIn PDF document text
    • https://zipexazoti.files.wordpress.com/2020/11/mikolatudod.pdfIn PDF document text
    • https://wopuxipimupa.files.wordpress.com/2020/11/wotilimokojonuriku.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/21864979918.pdfIn PDF document text
    • https://fajutavezuku.files.wordpress.com/2020/11/system_analysis_and_design_11th_edition_tilley.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_off000063b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63B3 5080 bytes
SHA-256: 3a33e9ca373f5125e8ee89d1a10a9b7ef6a16f051e4bfa5d61f3667c9fdd769d
font_01_sfnt_off000074e6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x74E6 10152 bytes
SHA-256: 62e75f5b64405b151965d03fade84d171ee87bf558e4a8711fc4f1c0a2212e33