Malicious PDF — malware analysis report

Static analysis result for SHA-256 5e2276f71e89a8ef…

MALICIOUS

PDF

46.4 KB Created: 2020-11-07 11:06:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: 4b254acd0ff105a4c3593bee2067d523 SHA-1: 8a7b64fd3c5e3aad8e2aeef75d2f9b5d264ddcd8 SHA-256: 5e2276f71e89a8ef03bf5c8c9efc3433e72ba22e6ced516993f41b663ddaacc1
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=the+crossing+2000+plot PDF link annotation
    • https://soxokelu.weebly.com/uploads/1/3/4/4/134494323/mujixelonoxigulinug.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383295/normal_5f8c17bd7653a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366009/normal_5f8b1a2d3528a.pdfIn PDF document text
    • https://xepajozojiv.weebly.com/uploads/1/3/4/4/134476610/rofagikejunel.pdfIn PDF document text
    • https://gepobuxew.weebly.com/uploads/1/3/1/0/131070920/mipebufetoxo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422909/normal_5f9c27e17c3f2.pdfIn PDF document text
    • https://rugisuvo.weebly.com/uploads/1/3/4/4/134438002/2025769.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/5b24ef78-52e0-4131-acce-158885a7e667/semurutesumep.pdfIn PDF document text
    • https://lejijofovuza.files.wordpress.com/2020/11/72830967952.pdfIn PDF document text
    • https://wuvutetejonu.files.wordpress.com/2020/11/xavewisoda.pdfIn PDF document text
    • https://goresab.files.wordpress.com/2020/11/kaxafopuzikewovenikem.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f3676ce-208d-4d54-9f80-be7a16fb48de/38418888270.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_off00007681.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7681 5208 bytes
SHA-256: 9a6751095865654981e43bdeb72d1fa693460493fb0a97204f1b5e7246ec1575
font_01_sfnt_off0000883d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x883D 10712 bytes
SHA-256: 0cc0bfbe4e9df2641b853e830312fbba7277236ac1b1a194b9207749a3444cb5