Malicious PDF — malware analysis report

Static analysis result for SHA-256 2c9ce90d22374aa7…

MALICIOUS

PDF

16.0 KB Created: 2020-10-23 19:48:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 4f34135c2ffad6028ba5dadb428a71c9 SHA-1: c3499d5851b3bfaa193978b780e9725f3df9feb8 SHA-256: 2c9ce90d22374aa774baebd7cfb3363c6ac7838de43dd1f982d0e190f7026006
192 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link that redirects to a known malicious URL, disguised with a seemingly innocuous keyword. This indicates a phishing or malware distribution attempt. The presence of numerous other links to PDF files hosted on cloud storage suggests a link farm or SEO poisoning tactic to improve search engine ranking for malicious content. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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.cc/123?keyword=food+safety+guidelines+childcare In PDF document text
    • https://s3.amazonaws.com/tetazino/xojosanelonupolisobugeri.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/4545740298.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/mariadb_commands.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b5e0ec6-4ad3-46bf-901a-13cf650a36f9/jufap.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2769440-6e1a-4537-8145-1f1dbd6b8a36/bakobadasakitod.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/088da94e-e004-4df9-939e-602ab430f39e/2835521395.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/069ebf22-f0a3-4972-a467-b1166dc80740/ginaviwinujunaru.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1973/7544/files/farmers_lab_seeds_blue_dream.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/2688/1972/files/48571045641.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3683/4981/files/septa_airport_line_sunday.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0957/1990/files/16303832355.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5007/2214/files/denby_high_school_mi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/1727/1453/files/gta_5_mobile_android_aptoide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3357/5075/files/30429022797.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/6898/7294/files/windows_10_hotkeys.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/9100/1021/files/gesafozibovome.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/babylon_mystery_religion_1966.pdfIn PDF document text
    • https://s3.amazonaws.com/felasorarabipis/information_technology_business_plan_sample.pdfIn PDF document text

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