Malicious PDF — malware analysis report

Static analysis result for SHA-256 0251e9e3d2c5678b…

MALICIOUS

PDF

16.0 KB Created: 2020-10-12 00:42:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 53686076e709228d0489939e74cee35f SHA-1: c936f5a6cd001ee0440bfec9bae2d294f07e94eb SHA-256: 0251e9e3d2c5678b50f7f3b52e9b6b390fb890c2f9387943409c5ea360ee2a30
182 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains a large number of embedded links pointing to external websites, many of which are identified as malicious redirectors or part of a link farm. The primary purpose appears to be directing users to potentially harmful content, likely for phishing or malware distribution. No scripts were extracted, but the structure and embedded URLs strongly suggest malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

Heuristics 4

  • 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.
  • 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://ggtraff.ru/strik?keyword=emigrate+vs+immigrate+worksheet In PDF document text
    • http://files.homeworshipping.com/uploads/1/3/2/6/132681664/gepegom_zodinifirenu_ridax_bozoxewerex.pdfIn PDF document text
    • http://nililimu.kaysfitcafe.com/uploads/1/3/1/6/131637419/popunizima.pdfIn PDF document text
    • http://jeruzi.kiefykez.com/uploads/1/3/2/6/132680856/4b4103143.pdfIn PDF document text
    • http://files.matzroofing.com/uploads/1/3/2/6/132682623/921bc18efbd.pdfIn PDF document text
    • http://files.ccrpmi.com/uploads/1/3/1/3/131383657/a67c2bada4.pdfIn PDF document text
    • https://site-1042554.mozfiles.com/files/1042554/16947837805.pdfIn PDF document text
    • https://site-1044016.mozfiles.com/files/1044016/59826054034.pdfIn PDF document text
    • https://site-1038700.mozfiles.com/files/1038700/nakijufusovus.pdfIn PDF document text
    • http://files.balnarringsusfair.com.au/uploads/1/3/0/7/130775143/c0923.pdfIn PDF document text
    • http://files.ayrarcheryclub.org/uploads/1/3/0/7/130776130/nesenakuletaju.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/9951/5816/files/boxavowigozosigarotifelej.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0494/2217/2327/files/birch_or_aspen_branches.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/0373/4947/files/nolavamejiribexezuxur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/5752/1574/files/combat_tournament_unblocked_weebly.pdfIn PDF document text