Malicious PDF — malware analysis report

Static analysis result for SHA-256 f696a9fa3fccdd45…

MALICIOUS

PDF

41.0 KB Created: 2020-11-07 02:23:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 21e69f1fc487b475730281a3cb9783f9 SHA-1: 0b519a14570cbe8467d3f8a33916f9ffd2b0ff7a SHA-256: f696a9fa3fccdd45c2ef7d374a61c4050f0f25e31824370a89d724f7aff15e59
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=cars+and+drives+mod+1.7.10 PDF link annotation
    • https://ruxodinari.weebly.com/uploads/1/3/4/3/134377607/tonumuvoriviwewajow.pdfIn PDF document text
    • https://bibeliki.weebly.com/uploads/1/3/0/7/130738572/4961476.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fawapaxo.files.wordpress.com/2020/11/esttica_mecnica_para_engenharia_r.pdfIn PDF document text
    • https://vadazigifexe.files.wordpress.com/2020/11/gopiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b2a3f968-852a-4dba-b7cd-f5aa642b4130/u_pick_pumpkins_osage_ia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4c1b3999-e4ee-44ff-9360-a346c4900ab8/zogubew.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/gaxofidixivuvuvosuzerorum.pdfIn PDF document text
    • https://mopuxupu.files.wordpress.com/2020/11/167740540.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/437797bd-7425-4ead-8605-29b82327e662/bunotejarukowodudikiviki.pdfIn PDF document text
    • https://paxajupivog.files.wordpress.com/2020/11/zikin.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b59f5a5d-7d66-4268-823a-71780f67617a/63839190289.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_off00006076.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6076 5208 bytes
SHA-256: b1ebba641aa1969b6c0883a46181d4e2b8f02b08acc93e02fa8c002bb8629182
font_01_sfnt_off00007226.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7226 11484 bytes
SHA-256: 1bdcef918efa2add7d500d86fa87c0fb9c9de5e2f02af4f7f06ed4364173cdc9