Malicious PDF — malware analysis report

Static analysis result for SHA-256 8751eaa094e93add…

MALICIOUS

PDF

50.1 KB Created: 2020-10-01 21:05:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-04
MD5: 9ec9c88a8c38714f738c21ac200dd40c SHA-1: f93a0f1d24fb81134adcc610d4748f8dd2da3014 SHA-256: 8751eaa094e93add5070064d4bf6100d16bd1d33b9a39f117d546479b40a47d1
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://gettraff.ru/strik?keyword=benjamin+bratton+the+stack+pdf In PDF document text
    • http://vesule.blissfisher.net/uploads/1/3/1/3/131384260/rerekekulowaropuwo.pdfIn PDF document text
    • http://files.bardosdiamondsports.com/uploads/1/3/2/7/132712206/kepurinakutut.pdfIn PDF document text
    • http://xagis.mrsberens5thgradenews.com/uploads/1/3/1/4/131453293/xizisasotamod.pdfIn PDF document text
    • https://site-1037086.mozfiles.com/files/1037086/dufageruwomawafum.pdfIn PDF document text
    • http://derupiro.holistichoundstraining.com/uploads/1/3/1/0/131070705/a33cb2b2a86e0.pdfIn PDF document text
    • http://kabegafod.northvicgps.com/uploads/1/3/0/7/130740117/nuwuz.pdfIn PDF document text
    • http://davukuka.caffeinatedlearning.com/uploads/1/3/1/4/131411896/9573597.pdfIn PDF document text
    • http://files.projectdental.org/uploads/1/3/0/8/130814349/sufapad-wopowelu-nijolizoniga.pdfIn PDF document text
    • http://rexofupa.windsordoorsales.com/uploads/1/3/1/4/131453416/6251096.pdfIn PDF document text
    • https://site-1037024.mozfiles.com/files/1037024/bamilikomipepirumovusafex.pdfIn PDF document text
    • https://site-1036695.mozfiles.com/files/1036695/37696023660.pdfIn PDF document text
    • https://site-1038422.mozfiles.com/files/1038422/zujujimudezoma.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off00008614.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off00008614.bin)
    • 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 extracted file (font_00_sfnt_off00008614.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00008614.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8614 5692 bytes
SHA-256: c19aba3e91713e8336b311e7d0f418ae7b79256edaf6895afc1b962335643dee
font_01_sfnt_off00009948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9948 10068 bytes
SHA-256: a607dae657bc9f5864094480cfbd356b0e5d1346a692e94070e7d06c5f45c9df