Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0d60fdf9e566cff…

MALICIOUS

PDF

42.4 KB Created: 2021-04-27 05:36:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 89e2b3a99c14083f57ad6be2298a9d96 SHA-1: 2a03f0cfa7164cf5b465fc2c3cd01aa62bef5376 SHA-256: a0d60fdf9e566cff41545b679eccd5c128393f2a358a4c63e9b32dee973deb01
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document employs a social engineering tactic, presenting itself as a guide to obtaining free in-game currency or hacks for popular games like Roblox. It contains multiple links that redirect to potentially malicious sites, including one explicitly labeled as a 'game hack' redirector. The document also includes a lure to install a browser extension or update, a common method for credential theft or malware delivery. While no scripts were directly extracted, the presence of embedded URLs and the nature of the lures strongly suggest an intent to lead the user to a malicious payload or phishing site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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/how-to-get-bloxburg-for-free-without-robux-game-hack PDF link annotation
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/free-hiring-scripters-roblox.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/oprewards-robux-free.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/free-roblox-catalog-buyer-bot.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/can-you-download-roblox-on-ps4-for-free.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/roblox-exploit-hack-october-2021.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/2021-free-robux-hacks-without-human-verification.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/how-to-get-a-free-pet-in-adopt-me-roblox.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/free-roblox-bucks.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-hack-youtube.pdfIn PDF document text
    • https://mismuh-kota-utara.sch.id/__statics/gudangsoal/files/roblox-how-to-get-in-bloxburg-for-free-2021.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_off000042b4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x42B4 26652 bytes
SHA-256: 3fccceb05b28b86ea89ce5ee3c601fa89b1096df031b0ce6fcc7b2048f8599f8
font_01_sfnt_off00008178.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8178 19128 bytes
SHA-256: 035daa59730858f27a7a43a2e5564a9ea2dbf174d097d4b30440ee08c01fc9b7