Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f39081d08477b1e…

MALICIOUS

PDF

35.1 KB Created: 2021-07-03 14:40:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: fbea744c7cad12223ff4dbc2611d72a8 SHA-1: 9d2d3ba94e6bcc1734c361c34bba76f4f362f0b4 SHA-256: 0f39081d08477b1ed624540f37902b44eb8186ec0bc7bd6fe1872f050a53ebfe
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/406889139/coin-master-hack-without-verification-2021-game-hack PDF link annotation
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/roblox-phantom-forces-hack_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/free-robux-comtoday_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/hack-pour-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/coin-master-hack-mod-apk-download_GM406889139.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/avatar-the-last-airbender-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/robloxworld-pw-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/free-tiktok-coins-2021_GM835599320.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/how-do-you-get-free-robux-on-roblox-android_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/mcpe-master-coins-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/minecraft-cheats-pc-2021_GM479516143.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins-today_GM406889139.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • https://elearning.man1karawang.sch.id/__statics/gudangsoal/files/how-to-do-a-peppa-hack-roblox_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_off0000326a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x326A 22384 bytes
SHA-256: 416fdcc3e4131447c5c7bc80ae29eb71acc48750d0abca34b8673638651c6b3d
font_01_sfnt_off00006411.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6411 19044 bytes
SHA-256: bc164ad6cfe60f57cf308bf587fcf39d6d442c5b14af35d4986789bcc521b71c

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