Malicious PDF — malware analysis report

Static analysis result for SHA-256 a5706f7ee9a8975d…

MALICIOUS

PDF

43.8 KB Created: 2021-06-09 11:44:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 7a1f873c9fc0d61f7a17f545ffd260e2 SHA-1: 9f45eef68ea6a92bd3025fbade0b874311079e07 SHA-256: a5706f7ee9a8975da63fb62be58e94b61cc6af1ea5a9d3c1d76b4a105da0b660
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document employs a game hack lure to entice users to click on a malicious URL. The primary heuristic indicates a high likelihood of malicious redirection, and the embedded URLs suggest a phishing or scam campaign. Although no scripts were explicitly extracted, the PDF format itself can embed JavaScript, which is often used to facilitate these types of attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/mod-pack-for-free-for-roblox-game-hack PDF link annotation
    • http://regioliga.pl/images/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://regioliga.pl/images/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://regioliga.pl/images/how-to-make-vip-server-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://regioliga.pl/images/make-free-robux_GM431946152.pdfIn PDF document text
    • http://regioliga.pl/images/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://regioliga.pl/images/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://regioliga.pl/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://regioliga.pl/images/coin-master-free-spins-activegamer_GM406889139.pdfIn PDF document text
    • http://regioliga.pl/images/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://regioliga.pl/images/free-roblox-com_GM431946152.pdfIn PDF document text
    • http://regioliga.pl/images/minecraft-free-exe_GM479516143.pdfIn PDF document text
    • http://regioliga.pl/images/coin-master-hack-tool-pc-download_GM406889139.pdfIn PDF document text
    • http://regioliga.pl/images/free-roblox-clothes-for-your-avatar_GM431946152.pdfIn PDF document text
    • http://regioliga.pl/images/how-do-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://regioliga.pl/images/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://regioliga.pl/images/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • http://regioliga.pl/images/coin-master-free-spins-today-39_GM406889139.pdfIn PDF document text
    • http://regioliga.pl/images/minecraft-hacker-skin_GM479516143.pdfIn PDF document text
    • http://regioliga.pl/images/free-robux-website_GM431946152.pdfIn PDF document text
    • http://regioliga.pl/images/roblox-fun-com-free-robux_GM431946152.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_004_off00004e8e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E8E 24728 bytes
SHA-256: fe3c268145fc7858ed3df55bf0c75516c54748dc16fa1c6ebf0b4eba97d5002e
font_01_sfnt_off000086db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86DB 18872 bytes
SHA-256: 72366593a256ed6c3d52cb26b2c9fb48bd2c8821d14cf56229b842f50e436a9a

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