Malicious PDF — malware analysis report

Static analysis result for SHA-256 abd7907f81b7b245…

MALICIOUS

PDF

42.0 KB Created: 2021-05-15 10:53:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c9c471b3931801d7cdc1f85864c3a968 SHA-1: 525e0c88560a507f7960d94c1b5af2e132aa178f SHA-256: abd7907f81b7b2454d46d9c58eac596480ea721ac3170afd31955530053682cd
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links and lures related to game hacks and free currency, specifically mentioning 'rewardrobux' and 'coin master'. The heuristic 'SE_BROWSER_INSTALL_LURE' indicates the document likely prompts the user to install a browser extension or update, a common tactic for malware delivery. The primary IOC is the link to 'netcdn.xyz', which is associated with game hack lures.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/rewardrobux-com-game-hack PDF link annotation
    • http://wsit.at/images/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://wsit.at/images/como-hackear-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://wsit.at/images/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://wsit.at/images/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://wsit.at/images/minecraft-windows-10-hack-client-2021_GM479516143.pdfIn PDF document text
    • http://wsit.at/images/worst-client_GM479516143.pdfIn PDF document text
    • http://wsit.at/images/how-to-block-someone-on-coin-master_GM406889139.pdfIn PDF document text
    • http://wsit.at/images/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • http://wsit.at/images/roblox-points_GM431946152.pdfIn PDF document text
    • http://wsit.at/images/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • http://wsit.at/images/free-robux-site_GM431946152.pdfIn PDF document text
    • http://wsit.at/images/coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://wsit.at/images/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://wsit.at/images/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://wsit.at/images/coin-master-spins-gratis_GM406889139.pdfIn PDF document text
    • http://wsit.at/images/i-want-free-robux_GM431946152.pdfIn PDF document text
    • http://wsit.at/images/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • http://wsit.at/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://wsit.at/images/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://wsit.at/images/watch-ads-for-robux_GM431946152.pdfIn PDF document text
    • https://www.bandicam.comIn 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_off000047fc.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47FC 24644 bytes
SHA-256: c1b7cdf3f8cdfc15efe8acd90be3648408a78e66306bf9fac56e4acb57c7dffb
font_01_sfnt_off0000805a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x805A 18676 bytes
SHA-256: 7669e564bd091b207fd11e388173a1fc76ed62ef873f42ab23981861f0020ac0

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