Malicious PDF — malware analysis report

Static analysis result for SHA-256 66334d8db8162d44…

MALICIOUS

PDF

79.1 KB Created: 2021-03-03 06:55:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 7f57e51b6a71005c586bedff482ee915 SHA-1: f57f641a385ba4ad419ccddd01eced0f2179a3dc SHA-256: 66334d8db8162d446afdba0cf96889cd9144cd8b81ca25b051db231c71250fd3
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 0.9998

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://maypoin.ru/strik?utm_term=the+river+radio+station+92.5+boston+ma PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4448992/normal_5fefc0dbb3174.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494166/normal_5ff53225ba6fd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366008/normal_5ff40b42e47f9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4493916/normal_5ff1850a186ac.pdfIn PDF document text
    • http://misiliv.66ghz.com/5001734279.pdfIn PDF document text
    • http://norelowugazilu.22web.org/why_does_my_kreepy_krauly_not_move.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475874/normal_602414572b80e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://gawekavadave.epizy.com/giving_directions_in_spanish_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/kefiperizonofu/nasejokixoxikov.pdfIn PDF document text
    • http://jerovewoxisabu.epizy.com/form_ds-_82_for_passport_card.pdfIn PDF document text
    • http://lugirike.epizy.com/photoshop_web_design_templates_free.pdfIn PDF document text
    • https://s3.amazonaws.com/widiku/81919124876.pdfIn PDF document text
    • http://jutebef.rf.gd/banana_tree_images_free.pdfIn PDF document text
    • https://s3.amazonaws.com/vuterijoze/spreadsheet_software_free_excel.pdfIn PDF document text
    • http://fevepapowiwed.epizy.com/ignite_vs_redis_performance.pdfIn PDF document text
    • https://s3.amazonaws.com/wukevirenesu/best_nicholas_sparks_book_quotes.pdfIn PDF document text
    • http://rupijelovugibiz.rf.gd/solar_system_planets_information_in_english.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e91c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE91C 5416 bytes
SHA-256: d54c4cb9f2bc74674aadd8c5584f9d0eacdee4c08ea38e5dfc72afc48cac1b9f
font_01_sfnt_off0000fb5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB5D 11060 bytes
SHA-256: d470eeb7166da68c1db6408c171bba32a0c70327d3bb57a9bdfc36f360522b4d
font_02_sfnt_off00012107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12107 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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