Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8e165b9ff494c92…

MALICIOUS

PDF

35.7 KB Created: 2021-06-30 05:45:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c8b70c85a6a2aa9854acca2f75b7504b SHA-1: 101fcbe1c313684f7a4fa797048a84578d4737c4 SHA-256: a8e165b9ff494c92ed3bed99c193bf74ade3e0cbe7f46bc6ceffe09371023054
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.co/app/431946152/robux-hack-no-questions-game-hack PDF link annotation
    • http://www.pspmrsmmbk.com/cendana/repository/roblox-avatar-maker-free_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/grow-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-robux-no-password-easy-obby-june-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/coin-master-free-spins-activegamer_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/coin-master-free-coins-and-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/roblox-free-pictures_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/free-robux-no-verification-needed_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/clothes-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/1-million-robux-for-free-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/hack-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/wurst-minecraft_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-to-get-robux-app-no-hack-or-cheat_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/minecraft-rtx-download-free_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/youtube-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana/repository/how-tzo-hack-robux-links_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmmbk.com/cendana//repository/how-to-get-free-robux-in-2021_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off0000333a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x333A 22728 bytes
SHA-256: 58d28a4ceb39b3071901ce6b9a46cfc84ef596fa85325a4ec3b1edb63fd2289b
font_01_sfnt_off00006629.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6629 19104 bytes
SHA-256: e956f406c588bc66dfc414c22b77fc1fb77c282f5793cc1d6e1c76a8ea2ca251

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