Malicious PDF — malware analysis report

Static analysis result for SHA-256 339eff45c0fe8377…

MALICIOUS

PDF

118.6 KB Created: 2020-11-09 15:40:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: dd9930ec688a11ec8e7504bcef82d365 SHA-1: 7003987bdc0adf4a6976ee4621974e63cd67c414 SHA-256: 339eff45c0fe83772a2dd0228638ef2de94ea0ee45648527fee002c3c13648cd
74 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains heuristics indicating it's a lure for free downloads, redirecting to a suspicious URL. The embedded URL and the high-confidence ML classifier further support its malicious nature. The primary IOC is the redirector URL, which is likely used to host malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9831

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/aws?keyword=this+is+me+nightcore+roblox+music+id+code PDF link annotation
    • https://rimenedefogifu.weebly.com/uploads/1/3/4/4/134466040/wepejiboves-roxebimirorojon-gekatunepixele.pdfIn PDF document text
    • https://sobokiza.weebly.com/uploads/1/3/4/3/134363786/5292345.pdfIn PDF document text
    • https://kabudededawizo.weebly.com/uploads/1/3/1/3/131383409/komub.pdfIn PDF document text
    • https://morozosewiveloz.weebly.com/uploads/1/3/4/3/134387595/batakifez-piriminu-pemuxoteneruwu-vefuli.pdfIn PDF document text
    • https://sopulekazixov.weebly.com/uploads/1/3/0/7/130776801/980ae9d52.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b5b383e-5732-4ace-906d-564ffe2c143b/45590098582.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3137ce7c-57ff-4602-8116-cfbbfe5bece5/jirekuso.pdfIn PDF document text
    • https://s3.amazonaws.com/tejuvonixag/music_notes_on_staff.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e93b76a-0776-49ae-991c-7d0e53b50caa/one_world_montessori_parmer.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/61252197029.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42c87df1-7cc9-425e-9e41-0b74932a66fd/56775169799.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1278543c-8191-4b6f-bad5-c30f6919124a/fodamabov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/005f1352-a279-4bfb-a25c-14f571bfcc2c/5033161874.pdfIn PDF document text

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