Malicious PDF — malware analysis report

Static analysis result for SHA-256 c954618e52f472f4…

MALICIOUS

PDF

75.5 KB Created: 2021-02-19 08:48:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 928ae24a304b547e19fa9e270dabfe46 SHA-1: 28e6f929ad18da7a840132c8137ec6ed092cc9dc SHA-256: c954618e52f472f4fa40355057ad3afdd9e2b0d4cf868d869e019ccce9dbff54
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://baarspo.ru/wix?keyword=participle+worksheets+for+grade+6 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4420604/normal_5ff22720d8d25.pdfIn PDF document text
    • https://cdn.sqhk.co/dugubupa/Yduz1p5/bullet_force_unity.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4445106/normal_600f122c8f630.pdfIn PDF document text
    • https://cdn.sqhk.co/petebeki/j3TqkK2/brhs_nj_website.pdfIn PDF document text
    • https://cdn.sqhk.co/rojarimeg/lgj7Dij/planet_of_the_apes_2011_stream.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459175/normal_6027a4cf7e79a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471230/normal_602b49a926044.pdfIn PDF document text
    • https://cdn.sqhk.co/vovewotutal/jhhiqeA/easy_game_brain_test_level_38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375353/normal_5feaec2d94db8.pdfIn PDF document text
    • https://cdn.sqhk.co/wazafanez/gdTghic/todigigemi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447460/normal_6003d5e34e4b7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412902/normal_5ff687808ca48.pdfIn PDF document text
    • https://cdn.sqhk.co/jolodovi/frnje4x/zatasowusup.pdfIn PDF document text
    • https://cdn.sqhk.co/tajudozizif/diaibhf/used_fold_up_chairs_for_sale.pdfIn PDF document text
    • https://cdn.sqhk.co/xulawajikigi/dlKcxjh/leniwojometijelam.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485810/normal_5fd7a35b6cc19.pdfIn PDF document text
    • https://cdn.sqhk.co/ziriziwebu/Ljd217t/47089085045.pdfIn PDF document text
    • https://cdn.sqhk.co/nozesinipi/iYx1bHA/stick_runner_2.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/somamere/pewavakuvutigizebim.pdfIn PDF document text
    • https://s3.amazonaws.com/wovigebi/tidodet.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/raf_brize_norton_flight_information_falklands.pdfIn PDF document text
    • https://s3.amazonaws.com/zozofufulolig/55052234988.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA11 5728 bytes
SHA-256: 680a42499c867dd09fb9e8dbd6d744866a1a937e0791167377a48885b7d21053
font_01_sfnt_off0000fda1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDA1 10228 bytes
SHA-256: 96c2904522d8bac9ea6e95a43e1b8b81e843819a44a062c149915c53c7f7e14e

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