Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3e6404c5eb3ebb8…

MALICIOUS

PDF

34.5 KB Created: 2021-07-03 10:34:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 597bfc6e379e3cbff722822b03c99999 SHA-1: bd03aac42272521809aee41940045e0582422b6b SHA-256: d3e6404c5eb3ebb896853014373373581b8c4f750df41b2b8a321fceb5f744e2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs, with a primary focus on 'game hack' lures like 'coinmasterfree-game-hack'. The ML classifier strongly indicated maliciousness, and the presence of these deceptive links suggests the document is designed to redirect users to potentially harmful websites. No scripts were extracted, but the document structure and embedded links are indicative of a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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 http://netcdn.co/app/406889139/coinmasterfree-game-hack PDF link annotation
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/minecraft-for-macbook-free_GM479516143.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/rewardex-robux_GM431946152.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/roblox-redeem-card-hack_GM431946152.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/roblox-hack-bars-2021-for-pc_GM431946152.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/free-spin-coin-master-instagram_GM406889139.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/games-for-robux_GM431946152.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/coin-master-hack-spins-2021_GM406889139.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/how-to-get-coin-master-free-spins-in-email_GM406889139.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/roblox-catalog-free-items-2021_GM431946152.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/hack-my-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/coin-master-hack-september-2021_GM406889139.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/can-i-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/daily-coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://elearningku.mts-muhajirinsby.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32D7 22436 bytes
SHA-256: 2938329c02a5392369e7e993d7915d8c3d8a0dfdbd9f9a33434737592468f6cf
font_01_sfnt_off000064ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64CA 18092 bytes
SHA-256: e3b824c700fc1afb9be61c0fda879df8bb3fefe3698910b387f7b25b5267b414

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