Malicious PDF — malware analysis report

Static analysis result for SHA-256 29ef46c156f6aed5…

MALICIOUS

PDF

40.1 KB Created: 2021-07-01 14:20:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: fa80a4d1f315ec822452073434ff13fc SHA-1: 481c34ffd993a3a8484448aa142b595ebe0f5f26 SHA-256: 29ef46c156f6aed5973140fdf24b48ff8961da909bf8b0f1a2e1dfbcb6703b07
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 0.9985

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/how-to-get-free-admin-in-every-roblox-game-game-hack PDF link annotation
    • https://mayunisma.sch.id/__statics/gudangsoal/files/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/pastebin-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-in-3-steps_GM431946152.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/stealer-hack-roblox_GM431946152.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/coin-master-spin-hack-app_GM406889139.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/coin-master-apk-hack-2021_GM406889139.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/can-i-download-roblox-for-free-right-now_GM431946152.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/eran-robux-free-robux-vrobux-com_GM431946152.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/www-robux-us_GM431946152.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/coin-master-34-4-hack_GM406889139.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/robloxfun-com-robux_GM431946152.pdfIn PDF document text
    • https://mayunisma.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-new-2021_GM406889139.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_off000041d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41D1 23280 bytes
SHA-256: b8d18f22b3759d1b7abd79a63b51be70b065295bbb9ddad48fe40696ee83dbc8
font_01_sfnt_off0000763c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x763C 19764 bytes
SHA-256: 67e38e5622284611a5038461849d10d227fbf0313d4964ac613616ef471fefcc

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