Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ca78f622e9908d7…

MALICIOUS

PDF

36.7 KB Created: 2021-05-21 14:28:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: feacef741b5845fe99a7536d592b8ba0 SHA-1: 1df8bbef048d7ba81a531852acf0cb0a97728f54 SHA-256: 9ca78f622e9908d7dd9c3406661a28f0f7db4447c10174da4cd3b7ef45c26efa
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 0.9447

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-roblox-website-game-hack PDF link annotation
    • http://linens.kiev.ua/images/coin-master-hack-apk-download-for-android-mobile_GM406889139.pdfIn PDF document text
    • http://linens.kiev.ua/images/how-to-earn-free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://linens.kiev.ua/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://linens.kiev.ua/images/how-to-install-minecraft-for-free-on-ios_GM479516143.pdfIn PDF document text
    • http://linens.kiev.ua/images/play-full-version-of-minecraft-for-free-no-download_GM479516143.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_002_off0000305d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x305D 27236 bytes
SHA-256: 4af40b3ec721b1b405157edce8ea4915c224c4ea5602d8b4158d8969b57284df
font_01_sfnt_off00006df4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF4 18372 bytes
SHA-256: 4f49704c3d2016fd3d486e698c5af7a9a5561cf776b84bb9dfcb3ffa887994c7

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