Malicious PDF — malware analysis report

Static analysis result for SHA-256 423c65ebd82f7edc…

MALICIOUS

PDF

35.1 KB Created: 2021-06-26 13:33:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 1eaaa2fa855490ac058119097f3b5687 SHA-1: aa108c1f175177cec928977f993e40d8d987c381 SHA-256: 423c65ebd82f7edcb1ec9811149a724cf0b0a6238e583f994f2e61372330e000
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.co/app/431946152/roblox-download-free-ios-game-hack PDF link annotation
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/robux-earning-websites_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/roblox-jailbreak-hacking-apps_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/roblox-people-girl_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/free-robux-generator-no-downloading-apps_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/hacking-beyond-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/free-robux-on-iphone_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/free-minecraft-generator_GM479516143.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/can-you-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/roblox-hack-tool-jailbreak_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/coin-master-400-spin-link-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/coin-master-unlimited-spin-link_GM406889139.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/free-robux-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/free-robux-gen_GM431946152.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man1kotakediri.sch.id/__statics/gudangsoal/files/minecraft-free-online-games_GM479516143.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_off00003027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3027 22820 bytes
SHA-256: e2efc8a17358ca53548c6f04fa926963f883a943cb22247b5b9f870de9d93ee9
font_01_sfnt_off000063a4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63A4 19156 bytes
SHA-256: 322f12a4d830e4fe21a1c202f5afb147bb3398e873a04644a1076f3d416dca71

Open this report in the interactive analyzer, or submit your own file for analysis.