Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1daf1c3029f3d7f…

MALICIOUS

PDF

71.4 KB Created: 2021-02-27 09:09:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 0fecf1fcc9a34f7b2958e6df5bc8508a SHA-1: 59ca0be04a9a090078ddeb1ca6da7de18f1f0232 SHA-256: b1daf1c3029f3d7fbb8b868be107251feee70a0af6ec54c0ce3bcffdfa0dd661
96 Risk Score

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 0.9997

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
  • 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=asp+net+mvc+file+upload PDF link annotation
    • https://cdn.sqhk.co/dubikureta/hiVwigK/educhat_app_download_for_pc.pdfIn PDF document text
    • http://zekabor.iblogger.org/xepabefaromumej.pdfIn PDF document text
    • https://cdn.sqhk.co/fugutexifi/dhajijj/9992981547.pdfIn PDF document text
    • https://cdn.sqhk.co/debefuki/FfMnOhc/pocket_mine_3_best_gear.pdfIn PDF document text
    • https://cdn.sqhk.co/pabelewexo/fKjcgcc/zozoza.pdfIn PDF document text
    • http://health-top.ru/virenupazimulawaruxln642.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kexeban.rf.gd/9291827898.pdfIn PDF document text
    • https://s3.amazonaws.com/fajujiju/94802396772.pdfIn PDF document text
    • http://xibiwoziveva.epizy.com/what_are_the_big_5_factors_of_personality.pdfIn PDF document text
    • https://s3.amazonaws.com/lazesej/lol_pbe_na.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/21966623408.pdfIn PDF document text
    • https://s3.amazonaws.com/kubafezin/change_my_sheets_in_spanish.pdfIn PDF document text
    • http://zoxutudirufusoj.epizy.com/free_video_intro_templates_without_watermark.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_off0000d8bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8BD 5252 bytes
SHA-256: 5ccbbfdc43725855247bbf742e27c54f0ac38353895607061ff4aba404b2ab66
font_01_sfnt_off0000ea96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA96 11408 bytes
SHA-256: 8d55511ad286e7c0f129143e48530e6a06052b43a00e94715f6403eed6aaa258

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