Malicious PDF — malware analysis report

Static analysis result for SHA-256 43f145a9d58fab40…

MALICIOUS

PDF

71.6 KB Created: 2021-02-15 01:27:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 6ec1ba22ca2000fe4accf7d0bc20f859 SHA-1: 582094887e70c51d3edd9ccf2a9013d08173024f SHA-256: 43f145a9d58fab40fbb72612a0f8f819b6ad4f3bb666a41658351e15c8227529
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9513

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
  • 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.
  • 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://jottigo.ru/aws?utm_term=monarchs+and+milkweed+worksheet+answers PDF link annotation
    • https://cdn.sqhk.co/vapumojemov/hhSQije/2355520914.pdfIn PDF document text
    • http://jizawilezi.22web.org/active_voice_and_passive_voice_question.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413475/normal_6001ca44c2cb5.pdfIn PDF document text
    • https://cdn.sqhk.co/xenivoronizu/gjfQ3dO/51572113254.pdfIn PDF document text
    • https://cdn.sqhk.co/luvunugoz/gTtiiic/doom_movie_2019_review.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368762/normal_5fc845dd8aef6.pdfIn PDF document text
    • https://mejebepagomuda.weebly.com/uploads/1/3/4/4/134494428/5513265.pdfIn PDF document text
    • https://cdn.sqhk.co/gekobegij/ajejfij/boo_monsters_inc_costume_for_toddler_uk.pdfIn PDF document text
    • https://cdn.sqhk.co/dasekizob/gghewid/96522654888.pdfIn PDF document text
    • http://lujalopenaso.iblogger.org/3d_map_generator_terrain_free.pdfIn PDF document text
    • https://s3.amazonaws.com/gezejoputiwinu/66840568666.pdfIn PDF document text
    • https://s3.amazonaws.com/nosepevozux/addend_and_sum_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jagux/shazam_para_pc_windows_7.pdfIn PDF document text
    • http://dezezefisimel.rf.gd/dvdvideosoft_free_audio_converter.pdfIn PDF document text

Related samples 4

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