Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3e11bc372c2ce99…

MALICIOUS

PDF

34.7 KB Created: 2021-07-07 18:10:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 4ae41f4247981dcafcce3ec4178974cb SHA-1: b19d9fd82c572966f8bd97b43632293ced6cfcc0 SHA-256: f3e11bc372c2ce99de4f8976488e150fbabeece79a251f13740005f2388abcdc
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/roblox-prison-life-hack-game-hack PDF link annotation
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/roblox-piano-hack-mobile_GM431946152.pdfIn PDF document text
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/coin-master-hack-online_GM406889139.pdfIn PDF document text
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-cheat_GM406889139.pdfIn PDF document text
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/free-robux-glitch_GM431946152.pdfIn PDF document text
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/mcpe-free-download_GM479516143.pdfIn PDF document text
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/free-robux-mod_GM431946152.pdfIn PDF document text
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/roblox-cheats-for-jailbreack_GM431946152.pdfIn PDF document text
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/coin-master-free-400-spin-link_GM406889139.pdfIn PDF document text
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/get-50-00-robux-free_GM431946152.pdfIn PDF document text
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/how-can-i-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/aimbot-hack-for-roblox-cbro_GM431946152.pdfIn PDF document text
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-dreamscape_GM431946152.pdfIn PDF document text
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/roblox-jump-hack-bit-slicer_GM431946152.pdfIn PDF document text
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/free-domain-for-minecraft-server_GM479516143.pdfIn PDF document text
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/minecraft-nintendo-switch-digital-code-free_GM479516143.pdfIn PDF document text
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/coin-master-free-100-spin-link_GM406889139.pdfIn PDF document text
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/free-robux-groups-2021_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_off000030ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30EE 22424 bytes
SHA-256: a7120adce1dc833d386a077e1916a7dde15251b9bbd36933643a4f7608157fe3
font_01_sfnt_off000062ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62FF 18932 bytes
SHA-256: 757c592a10e4627f90624bfdd8f1127ea4c0f8f917493ad00ff1bc4f9e7f3eb7

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