Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a10d13fb588446a…

MALICIOUS

PDF

23.5 KB Created: 2020-08-01 21:38:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 20ec29aa04f356dc91aa1b4c83c4c798 SHA-1: b4146261d2aee572c50e57cadb91e47959d999e3 SHA-256: 5a10d13fb588446a69954c4e6d603e460a028311cad61913302e1e53a8862d86
192 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm of SEO-optimized PDF files, with the primary link leading to a known malicious redirector. The document body, though heavily obfuscated, contains the malicious URL and references to other benign-looking PDFs. This suggests a phishing or scam attempt to redirect users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9983

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.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ttraff.com/pify?keyword=mj+to+rf In PDF document text
    • http://files.designsbyoc.com/uploads/1/3/1/3/131378776/4206568.pdfIn PDF document text
    • http://files.jereminsng.com/uploads/1/3/2/7/132740435/8201829.pdfIn PDF document text
    • http://files.whitelotusdesigns.com/uploads/1/3/0/8/130813821/xomare.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3573/7755/files/97350432701.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/4684/6107/files/67375906012.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7868051279.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3500/7893/files/fezolilevejevefon.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1008/8342/files/check_in_southwest.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4162/8072/files/jiredosedolevagumaxur.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/91489653134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/9380/2646/files/41130379778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0174/1463/files/63035068203.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9314/8313/files/6969186570.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/2561/3468/files/faleroforag.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/5004/1495/files/jafalew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7772/9442/files/vupunevewumikekabetijas.pdfIn PDF document text