Malicious PDF — malware analysis report

Static analysis result for SHA-256 80b46a846a34486f…

MALICIOUS

PDF

73.1 KB Created: 2020-11-07 05:19:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: a5d2861ac13ce3f2d99112e243232b0f SHA-1: 46653040785ebf535a2764c09df968ae880b3fb9 SHA-256: 80b46a846a34486fbb71dc3461aa8022b9a62350bc34921743c5f814ffccac55
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=tyranny+character+creation+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417814/normal_5f95e6c06f5ae.pdfIn PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/vefurafuvup_pemevan_zesow.pdfIn PDF document text
    • https://mivezariwib.weebly.com/uploads/1/3/4/5/134582287/seralonejaj.pdfIn PDF document text
    • https://kufesolujuxubi.weebly.com/uploads/1/3/4/3/134373324/a9cd7d4dd2c.pdfIn PDF document text
    • https://ganunuzarije.weebly.com/uploads/1/3/4/5/134518475/2e878.pdfIn PDF document text
    • https://redunexodozik.weebly.com/uploads/1/3/0/8/130814050/546850.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402960/normal_5f9c7d3f101ca.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407313/normal_5fa57d5f547f3.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/756c1d14-c1cc-4ca7-962b-4a828578d9d5/lezufebekefewatisinenex.pdfIn PDF document text
    • https://s3.amazonaws.com/vezosoluvezoj/73918851930.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6380bcff-224a-45a3-9b35-c15d81f3c053/dessiner_faade_maison_3d.pdfIn PDF document text
    • https://s3.amazonaws.com/sinamozagemoger/spring_garden_spa_groupon.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_off0000df01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF01 5040 bytes
SHA-256: 724212a0a1e9829de915422fb305681edf65578972567f705a07ed1bdd9badd6
font_01_sfnt_off0000f024.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF024 11540 bytes
SHA-256: 142228b0b6714b10fc9dac74e7cf32c297a59b4375c7b700c1ed40d03bd0fc69