Malicious PDF — malware analysis report

Static analysis result for SHA-256 d642c22c4322ddb3…

MALICIOUS

PDF

30.9 KB Created: 2020-10-21 09:36:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 2d152df9ad618d0f96642ea4e2f442c8 SHA-1: 2a7228d6913dbc31f44174f45ebaeb5df0382b8a SHA-256: d642c22c4322ddb3903da5a5c7220f81c8e4f42b604f6ad9ae661e8a0de555b8
192 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains a URL that appears to be part of a link farm or SEO manipulation scheme. The presence of a malicious redirector suggests an attempt to lead users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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.link/123?keyword=scope+of+political+economy+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379726/normal_5f8bde1b163d3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369138/normal_5f881abe22b32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381547/normal_5f8d4fda4b0e5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391013/normal_5f8e067de0c47.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366976/normal_5f8731186b7f5.pdfIn PDF document text
    • https://kubupukadumu.weebly.com/uploads/1/3/1/3/131382740/nevirolusu.pdfIn PDF document text
    • https://dirigesibujov.weebly.com/uploads/1/3/0/9/130969991/votedojodages.pdfIn PDF document text
    • https://fanawilixu.weebly.com/uploads/1/3/1/4/131408209/757d97e5e.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/7782/3385/files/72699287485.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3428/2654/files/monitor_privacy_screen_27_inch.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9980/8149/files/best_minecraft_quest_modpacks_2020.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/6157/5325/files/oxford_picture_dictionary_workbook_free_download.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/6844/3810/files/61005903224.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e1342c6-a725-4dac-93da-8d835a1424a0/49504629597.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5e9bb3d-74ac-420e-b74f-8fc6f451e993/guwulifuwevigasijigitujix.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b57091d8-ab69-44ed-bea1-334a3482c6d8/67506443338.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ddf93d51-f68c-4e64-80de-ba74bdc13621/38058130535.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3239/5423/files/finding_inverse_functions_graphically_worksheet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9737/5388/files/32271707504.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/3510/1850/files/34445013430.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/7797/0341/files/lijefevulizam.pdfIn PDF document text

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