Malicious PDF — malware analysis report

Static analysis result for SHA-256 976618a7cba27467…

MALICIOUS

PDF

58.4 KB Created: 2021-01-08 08:54:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 496589cf1809eba66cc3e36267ec25bb SHA-1: e74891d25c486de6d7ca1d6e269763c40dabaad2 SHA-256: 976618a7cba274676b7f0d6c797d86822321cf94c133c8b1e202244587d7f4da
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

The PDF file contains a lure related to 'utorrent pro free for android uptodown' and utilizes a redirector link to a suspicious domain. ClamAV detected this file as Pdf.Phishing.Trojan, indicating a phishing and trojan distribution attempt. The presence of external URIs and the ML classifier's flagging further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7709

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=utorrent+pro+free++for+android+uptodown PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4479684/normal_5fb817a62d653.pdfIn PDF document text
    • https://cdn.sqhk.co/bebumula/ibggaez/18644803403.pdfIn PDF document text
    • https://cdn.sqhk.co/letojeka/ieWDiht/revenger_x_vape_not_charging.pdfIn PDF document text
    • https://cdn.sqhk.co/semiwewedazi/4gdRbji/miss_piggy_angry_gif.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369508/normal_5faa52caf0e07.pdfIn PDF document text
    • https://cdn.sqhk.co/kovixileta/jhiefhc/how_to_cook_spaghetti_squash_in_microwave_video.pdfIn PDF document text
    • https://cdn.sqhk.co/mewidexe/AihjauU/kumusotofalenirinekizin.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367281/normal_5fc906ea41727.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/ropuba/29927500177.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f68dbc15-984b-417f-b6b3-f779bdc13921/6750875075.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/54eefb94-7c7a-4cd6-9884-7f8f6891f194/naxijubexeli.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f7e14415-9482-4127-887a-c89efe4b236f/vuwogokodidejuwubobimun.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b4a2d44-e5bd-425a-a620-6c5c1dfbc9b6/watch_ponyo_english.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23786a81-9be9-4b78-ab4c-72c11c5c0354/foxetujofewakefaki.pdfIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000db21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB21 4908 bytes
SHA-256: 4f027a94c400ea1fdf8165a69626a507f3f6aec61203da9fec0156fc431f7d19