Malicious PDF — malware analysis report

Static analysis result for SHA-256 4943d27b658561ff…

MALICIOUS

PDF

43.4 KB Created: 2020-10-12 08:10:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: e305a1b7d19e4134c41fdc14849251f7 SHA-1: 7e5f637b5191f55cf30c36dfa958975b11948f0c SHA-256: 4943d27b658561ff0e6df090ac420f1213549d8aff95340414ed9955319db977
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://cctraff.ru/pify?keyword=black+and+decker+portable+power+station+battery+replacement In PDF document text
    • http://kasuju.atlcasestudies.com/uploads/1/3/2/8/132814930/4d98148f1380.pdfIn PDF document text
    • http://lowegev.tinamarieneely.com/uploads/1/3/1/4/131406518/8bdd88bafc3.pdfIn PDF document text
    • http://files.hareandtortoiserunwalk.com/uploads/1/3/2/7/132740511/nitabisemot.pdfIn PDF document text
    • http://rewar.fredburtonpaintings.org/uploads/1/3/1/4/131408999/3769717.pdfIn PDF document text
    • http://files.artbycierranicole.com/uploads/1/3/1/3/131380582/320012.pdfIn PDF document text
    • http://files.cathermanslandscaping.com/uploads/1/3/1/4/131452741/kisapelilis_gavive.pdfIn PDF document text
    • http://xawenu.annelaurestudio.com/uploads/1/3/1/8/131856632/3532105.pdfIn PDF document text
    • http://xiwedugo.adaptiveriding.org/uploads/1/3/1/3/131383613/23bbdbb62df4641.pdfIn PDF document text
    • http://files.bluewatercraft.net/uploads/1/3/0/7/130776218/tibudalikar-fekasaxaduza-tisugazafafakav.pdfIn PDF document text
    • http://files.onesweetworld.us/uploads/1/3/1/1/131164110/ce2f419da234a.pdfIn PDF document text
    • http://tilikame.tru-endeavors.com/uploads/1/3/1/6/131607203/xaperagarip.pdfIn PDF document text
    • http://files.jennaveirs.com/uploads/1/3/1/4/131454034/4393432.pdfIn PDF document text
    • http://duxog.g-n-o.com/uploads/1/3/2/8/132814343/pidixej_xixedebenalefi_ripufamoni.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000698d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x698D 5668 bytes
SHA-256: 532dd997c85ec99eb161d7bb53c847344ca54fcdfcf4d8802a0a2b222bf971c0
font_01_sfnt_off00007ccb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CCB 10412 bytes
SHA-256: c95e0958a435dc018ba48e53de7b8307135ae50bb9e81d17ead923e71764dbae