Malicious PDF — malware analysis report

Static analysis result for SHA-256 bf580d6448a2124e…

MALICIOUS

PDF

50.7 KB Created: 2021-06-02 22:59:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 58d8af8a6eb08a6ee452bde0a32bbeaf SHA-1: 1f30022a3947ff04d01b292fafd8107561df4358 SHA-256: bf580d6448a2124edc55de82c1ee69a541f4877bf59e42557963df6d91a1f6ef
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 0.9779

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.xyz/app/431946152/how-to-have-bcc-in-roblox-free-game-hack PDF link annotation
    • http://babbibooth.com/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://babbibooth.com/images/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://babbibooth.com/images/coin-master-hack-version_GM406889139.pdfIn PDF document text
    • http://babbibooth.com/images/minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://babbibooth.com/images/com-roblox_GM431946152.pdfIn PDF document text
    • http://babbibooth.com/images/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdfIn PDF document text
    • http://babbibooth.com/images/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://babbibooth.com/images/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • http://babbibooth.com/images/robux-redeem_GM431946152.pdfIn PDF document text
    • http://babbibooth.com/images/free-fire-vs-pubg-tik-tok_GM835599320.pdfIn PDF document text
    • http://babbibooth.com/images/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://babbibooth.com/images/free-tiktok-fans-and-likes_GM835599320.pdfIn PDF document text
    • http://babbibooth.com/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://babbibooth.com/images/free-robux-generator-for-kids_GM431946152.pdfIn PDF document text
    • http://babbibooth.com/images/coin-master-hack-app-android_GM406889139.pdfIn PDF document text
    • http://babbibooth.com/images/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://babbibooth.com/images/free-tiktok-likes-without-verification_GM835599320.pdfIn PDF document text
    • http://babbibooth.com/images/give-me-free-robux_GM431946152.pdfIn PDF document text
    • http://babbibooth.com/images/coin-master-hacks-for-cards_GM406889139.pdfIn PDF document text
    • http://babbibooth.com/images/funbloxxyz-free-robux_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_off000052e5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52E5 28224 bytes
SHA-256: bc474aa276f6a17311fe79c08292d0c2c634eb15516bd66bcc3b87b5a34d87ef
font_01_sfnt_off00009142.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9142 7448 bytes
SHA-256: a76ff9b4805dcff342f7268a16e2e3c2ff2b31b96c381fe4deb6ceea777bce90
font_02_sfnt_off0000a325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA325 18456 bytes
SHA-256: 89c8a08e036265aca4df8784cbacdf85442b1db7475fb1607095b74ff5fa9f2d

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