Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc10a874fb5fe9cd…

MALICIOUS

PDF

51.2 KB Created: 2021-02-25 18:44:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 1772bdc5b6fcd1fa994ed7e3f8ab0a7a SHA-1: 0e40f10ff1a442f2385ce79e59ccd7a220be842f SHA-256: bc10a874fb5fe9cd2c51217b20c68f8a5beae2327fce31783c723b0578a8a70a
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many pointing to disposable domains and link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the PDF structure and embedded URIs are consistent with techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7360

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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://druttle.ru/award?keyword=excelsior+meaning+ny PDF link annotation
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    • https://cdn.sqhk.co/kufezagivori/52oLshf/hay_day_hack_game_download.pdfIn PDF document text
    • http://winclean-shop.space/download_super_starfish_mod_apkqoug2.pdfIn PDF document text
    • https://sizadefo.weebly.com/uploads/1/3/4/3/134381744/1988502.pdfIn PDF document text
    • https://xiforamuti.weebly.com/uploads/1/3/4/6/134611992/nuzeniroponuled-xigowo-vosetezarijodet-kexidaramuvi.pdfIn PDF document text
    • https://xegezegev.weebly.com/uploads/1/3/2/6/132683484/8401512.pdfIn PDF document text
    • http://reduslim-shop.website/best_browser_for_online_videos_android6srxp.pdfIn PDF document text
    • http://tonerinkstore.com/16208259398w6er9.pdfIn PDF document text
    • http://eu-study.ru/adhesive_bonding_processzvc8r.pdfIn PDF document text
    • http://autokenn.com/zefekelasinasekirabomibbolb.pdfIn PDF document text
    • https://tabodixab.weebly.com/uploads/1/3/4/5/134585887/4216601.pdfIn PDF document text
    • https://monezoxikaxusoj.weebly.com/uploads/1/3/1/4/131453753/4751984.pdfIn PDF document text
    • http://hiziryigit.online/ginowevadagotoletexenithdi03.pdfIn PDF document text
    • https://cdn.sqhk.co/zikegasenar/6vtAhg4/metal_soldier_2_mod_apk_terbaru.pdfIn PDF document text
    • https://s3.amazonaws.com/wazorixekunafob/88546111821.pdfIn PDF document text
    • https://s3.amazonaws.com/nabifovu/arcsight_logger_upgrade_guide.pdfIn PDF document text
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