Malicious PDF — malware analysis report

Static analysis result for SHA-256 96421ec53e501ed6…

MALICIOUS

PDF

63.8 KB Created: 2021-02-27 00:27:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7107d07a449e9a352c0cfd9cf7e2f5cc SHA-1: 15fae0327e908e17c9282dbcbd1efa1e24d56993 SHA-256: 96421ec53e501ed64e54dc654fecdeb3490db822ceda2e79053e013508d9bc4c
94 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, with a specific detection name indicating it's a phishing trojan. It contains an embedded URI pointing to a URL that appears to be a lure for downloading a Java certification book PDF. This suggests a phishing attack vector where the document itself is the attachment, aiming to trick the user into clicking the malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

Heuristics 3

  • 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
  • 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://jacksth.ru/award?keyword=java+8+certification+book+by+kathy+sierra+pdf+download
    • https://cdn.sqhk.co/golomamone/hgjtC6T/recargas_doble_a_cuba_cubacel.pdf
    • https://ludunijup.weebly.com/uploads/1/3/0/9/130968942/571239fda.pdf
    • https://cdn.sqhk.co/titubebojek/hiUGhb3/dofuwenirijijepirol.pdf
    • https://butopejejix.weebly.com/uploads/1/3/2/8/132814220/3094209.pdf
    • https://gapuropiti.weebly.com/uploads/1/3/2/7/132740804/2891292.pdf
    • http://gonugotez.22web.org/how_to_turn_on_the_function_key.pdf
    • https://cdn.sqhk.co/delojiwuguj/ejdkieF/honda_gx160_motor_spark_plug.pdf
    • http://fajujefa.getenjoyment.net/the_go_giver_summary.pdf
    • https://titumakusijuvap.weebly.com/uploads/1/3/4/3/134353199/1933866.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://fevasakexelima.epizy.com/play_store_app_stuck_on_pending.pdf
    • https://s3.amazonaws.com/wuvepilamamuse/mapireziwal.pdf
    • http://pagiwufuvefukuf.epizy.com/nolal.pdf
    • http://lepevalir.rf.gd/91456172259.pdf
    • http://xevaxujexodo.epizy.com/dresden_files_battle_ground_review.pdf
    • http://vexabimumemig.atwebpages.com/15510658397.pdf
    • http://xojakejib.epizy.com/zojedurufubarurunutin.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e91c.bin
c8ccb42e25be4ecb0212c642986a8ebf65a848dfeb2c5ea8b0d674055d6b4da1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE91C 5884 bytes

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