Malicious PDF — malware analysis report

Static analysis result for SHA-256 89a468a22492a3d2…

MALICIOUS

PDF

40.5 KB Created: 2021-05-10 17:06:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: ac6d39b82bf9a3390b9512ed0e5c953a SHA-1: 84c86635e10c58e8e2b9b3f82ee511fbc43ad6f9 SHA-256: 89a468a22492a3d2c0fb384a2fd6ce210aab3c2399cf88b4c94731a7961da4d0
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 0.9974

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/free-limiteds-roblox-game-hack PDF link annotation
    • http://parsbaft.com/images/toolbox-for-minecraft_GM479516143.pdfIn PDF document text
    • http://parsbaft.com/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://parsbaft.com/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/roblox-premium-free_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/coin-master-time-hack_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/are-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://parsbaft.com/images/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/coin-master-level-4_GM406889139.pdfIn PDF document text
    • http://parsbaft.com/images/free-robux-images_GM431946152.pdfIn PDF document text
    • http://parsbaft.com/images/safe-hack-for-coin-master-android_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
stream_003_off00004101.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4101 25324 bytes
SHA-256: 89a87ce5dd02ad8a58a2f371694c472666fbb25f50dd865f70a23415244497da
font_01_sfnt_off00007b3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B3C 18604 bytes
SHA-256: cd6e3b888b69b87eccf2bd9bf0eaf83aa01cccd071b198ee6fa00879ae765b94

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