Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9a3fb0acb78e433…

MALICIOUS

PDF

34.7 KB Created: 2021-07-09 01:05:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: d145a032c1f1d1cddf2ba04d079c1627 SHA-1: 5981a837dc42a3ea44578566667d86f8662cfc95 SHA-256: b9a3fb0acb78e43362b86054853f0f316365f7d948f65456e5145153502b00c0
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/479516143/minecraft-free-ios-2021-game-hack PDF link annotation
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/coin-master-free-spin-daily-bonus_GM406889139.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/coin-master-free-spins-deutsch-download-ios-link_GM406889139.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/hack-in-roblox-games_GM431946152.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/how-to-get-50-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/minecraft-windows-10-hacks_GM479516143.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/tiktok-free-coins-apk_GM835599320.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/haktuts-coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/free-roblox-premium_GM431946152.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/free-robux-come_GM431946152.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • https://elearning.manposo.sch.id/__statics/gudangsoal/files/coin-master-free-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32B5 22620 bytes
SHA-256: c1bf2fb0c4bedd557401743afca34fa8c453ad80c484910de4bf8c73e51b848c
font_01_sfnt_off0000646e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x646E 18400 bytes
SHA-256: 2bf844231399acc5cf711acb9faf8aedd609a9c8605d8b3f0076c20fc980fe80

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