Malicious PDF — malware analysis report

Static analysis result for SHA-256 c13da74e8d75478c…

MALICIOUS

PDF

84.6 KB Created: 2021-01-21 14:05:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 8221a4854cbdb03359e80bf76e9092e0 SHA-1: 70286c3735c91e05f365456513db60200306151b SHA-256: c13da74e8d75478c32fc8bbc3ded50ea9a20b13bbf2c6da6a82b6da0c050da50
134 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ClamAV and ML classifiers. It contains a high-confidence heuristic indicating an image lure linking to an SEO redirector, specifically 'https://trafffe.ru/aws?utm_term=khaki+dress+uniform+womens'. This suggests a phishing or free-download scam. No scripts were extracted from this sample, but the presence of embedded URLs and the nature of the heuristics point towards a malicious intent to redirect the user to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7721

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://trafffe.ru/aws?utm_term=khaki+dress+uniform+womens PDF link annotation
    • https://cdn.sqhk.co/ludozenidi/fC4ggUb/67635267092.pdfIn PDF document text
    • https://kufojinelimipi.weebly.com/uploads/1/3/0/7/130776518/xapitenuj-revaj.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446765/normal_5fe33279381ab.pdfIn PDF document text
    • https://cdn.sqhk.co/ratufewebu/iPhgPje/minecraft_servers_survival_pe.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482403/normal_5fc94186d78ff.pdfIn PDF document text
    • https://cdn.sqhk.co/xuxozowaki/h5lwLjd/39320662056.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489993/normal_5fb9f3a19feda.pdfIn PDF document text
    • https://lebivituwaw.weebly.com/uploads/1/3/1/8/131856954/b1e045.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475392/normal_5fafbdc149e9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4390074/normal_5fbb77482f887.pdfIn PDF document text
    • https://pigamudabuv.weebly.com/uploads/1/3/4/2/134235231/75e17ffbbd584d.pdfIn PDF document text
    • https://site-1179350.mozfiles.com/files/1179350/google_chrome_app_for_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/xukonakefules/slader_math_answers_algebra_2.pdfIn PDF document text
    • https://s3.amazonaws.com/petikamov/gotegixiv.pdfIn PDF document text
    • https://s3.amazonaws.com/towutoginadivu/game_minecraft_pokemon_mod.pdfIn PDF document text
    • https://s3.amazonaws.com/kudowo/ye_barfani_raatein_song.pdfIn PDF document text

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