Malicious PDF — malware analysis report

Static analysis result for SHA-256 1551a0b66d70c6de…

MALICIOUS

PDF

16.0 KB Created: 2020-10-29 03:46:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 14c3114e92d03a2cd862c5f4adfd8241 SHA-1: 4e5832bb7776038e131b6890bdc691ad603dc395 SHA-256: 1551a0b66d70c6de163c589149e8156a43e99d7bbdfe7e1ee0184cacfc1c19dd
212 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.001 User Execution: Malicious Link

This PDF document is designed as a lure, presenting an image that likely hides a clickable link. The embedded link, https://ttraff.me/123?keyword=types+of+talk+show+hosts, is identified as a malicious redirector. The document also contains a large number of other PDF links, suggesting a link farm or SEO poisoning tactic to distribute malicious content. The ML classifier strongly supports the malicious verdict.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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.
  • 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.
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 16 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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.me/123?keyword=types+of+talk+show+hosts In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370528/normal_5f992f6a1a7d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403947/normal_5f92387870d2c.pdfIn PDF document text
    • https://dudikojegak.weebly.com/uploads/1/3/1/4/131406444/fifokevov.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371004/normal_5f948cf96e9a4.pdfIn PDF document text
    • https://tanutalavisa.weebly.com/uploads/1/3/4/0/134000413/9011167.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386354/normal_5f8da5e2147e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373259/normal_5f8a6789b933a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370268/normal_5f8a05dde409f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375077/normal_5f8e6a164dbd9.pdfIn PDF document text
    • https://fisizupesaxog.weebly.com/uploads/1/3/1/6/131636899/futevifulukipuva.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408583/normal_5f9a119c05a84.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380219/normal_5f9390c32b010.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372702/normal_5f95803a55032.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379839/norIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/0771/1653/files/middle_cranial_fossa_arachnoid_cyst_radiology.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5509/5712/files/college_prep_genius_workbook.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/5287/3919/files/kusunemiguwesoko.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/5587/2680/files/78882830784.pdfIn PDF document text

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