Malicious PDF — malware analysis report

Static analysis result for SHA-256 87fa0a66e7d784d6…

MALICIOUS

PDF

47.5 KB Created: 2021-06-04 03:22:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: e1f9ca69c34f104065f32a8fa31fa90d SHA-1: a3822ee3073d66a651a77f5bae27990228384b62 SHA-256: 87fa0a66e7d784d6bc33524ac873129def9dbb841e984a5159e187bea504c54a
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 0.9769

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 https://netcdn.online/app/406889139/free-coin-master-spins-no-human-verification-game-hack PDF link annotation
    • https://opac.umrah.ac.id/repository/coin-master-mod-apk-free-download-for-android_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/bloxawards-com-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/minecraft-for-ps3-free_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/rape-simulator_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-scams_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/tiktok-views-free_GM835599320.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-hack-minecraft_GM479516143.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/como-hackear-el-juego-coin-master_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/free-avatar-roblox_GM431946152.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/spin-coin_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/coin-master-deals_GM406889139.pdfIn PDF document text
    • https://opac.umrah.ac.id/repository/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000549a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x549A 25072 bytes
SHA-256: 24c2a126b765292bf95d5e051df7ed27ca3c6bfb0f8b12ad065b54e6d2dab193
font_01_sfnt_off00008cd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CD3 2868 bytes
SHA-256: 00109425b76763440a5569341faade0445b3c9f8514523a6f287fddbc9082efe
font_02_sfnt_off000096c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x96C0 18420 bytes
SHA-256: 6292f7fd9c783a708a29fdad24b2019f18fef79b6cfcf8f7eb350847db107d60

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