Malicious PDF — malware analysis report

Static analysis result for SHA-256 99e5bcf6659da08f…

MALICIOUS

PDF

34.8 KB Created: 2021-07-03 21:16:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 0c046bc8855463930c7dbbb1a2c8b7dd SHA-1: 1014ad10a5d895cde576cf1fabbe43c7af8703dd SHA-256: 99e5bcf6659da08f079ec5cf999ceeb766c82e99d43718d507aefadc839c7287
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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.tw/app/431946152/rbx-hut-promo-codes-game-hack PDF link annotation
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/hacks-roblox_GM431946152.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/roblox-promo-codes-for-free-robux_GM431946152.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/how-to-recover-roblox-account-that-was-hacked_GM431946152.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/coin-master-fan-page-free-spins_GM406889139.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/what-do-roblox-points-do_GM431946152.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/roblox-mods-free-download_GM431946152.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-not-clickbait-2021_GM431946152.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-robux-app_GM431946152.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/roblox-free-modeler_GM431946152.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/generator-robux_GM431946152.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/roblox-hack-week-custom-materials_GM431946152.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/best-free-non-virus-roblox-exploit_GM431946152.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/unlimited-robux-cheat_GM431946152.pdfIn PDF document text
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/robux-generator-no-survey_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_off0000308c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x308C 22232 bytes
SHA-256: 95a2cb8de719e57158223f976cf51b3496e2f7485ee88177f1c16f3f4a2b1400
font_01_sfnt_off00006231.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6231 19244 bytes
SHA-256: 782a737def693689e4b5665cffc47cc258515f3f674248a8a55cde411c40cafc

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