Malicious PDF — malware analysis report

Static analysis result for SHA-256 4896f4b4dce60443…

MALICIOUS

PDF

43.5 KB Created: 2021-06-03 22:39:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e39a8ee6cce673ddd94e81e45043aa9c SHA-1: 6b373a528d202da5a9d700d68bd8a3bf6ee98939 SHA-256: 4896f4b4dce60443c1c85a5379b05a4b9d2fa7f40eb7dcccdcf77bd43a5099b9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links and a prominent lure related to 'free game hacks' and 'generators'. The primary external URL, https://netcdn.online/app/431946152/free-roblox-hack-game-hack, is directly linked to a high-severity heuristic firing for a game hack redirector. The document's content and structure strongly suggest a social engineering tactic to trick users into visiting malicious sites, likely for credential harvesting or malware distribution. No scripts were extracted, but the PDF's nature as a lure is clear.

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.online/app/431946152/free-roblox-hack-game-hack PDF link annotation
    • http://elearning.man1metro.sch.id/__statics/gudangsoal/files/coin-master-free-coins-generator_GM406889139.pdfIn PDF document text
    • http://elearning.man1metro.sch.id/__statics/gudangsoal/files/roblox-booga-booga-hack_GM431946152.pdfIn PDF document text
    • http://elearning.man1metro.sch.id/__statics/gudangsoal/files/minecraft-tiktok-hacks_GM479516143.pdfIn PDF document text
    • http://elearning.man1metro.sch.id/__statics/gudangsoal/files/coin-master-hack-blogspot_GM406889139.pdfIn PDF document text
    • http://elearning.man1metro.sch.id/__statics/gudangsoal/files/coin-master-free-download_GM406889139.pdfIn PDF document text
    • http://elearning.man1metro.sch.id/__statics/gudangsoal/files/free-roblox-followers-generator_GM431946152.pdfIn PDF document text
    • http://elearning.man1metro.sch.id/__statics/gudangsoal/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://elearning.man1metro.sch.id/__statics/gudangsoal/files/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://elearning.man1metro.sch.id/__statics/gudangsoal/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://elearning.man1metro.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://elearning.man1metro.sch.id/__statics/gudangsoal/files/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elearning.man1metro.sch.id/__statics/gudangsoal/files/minecraft-pe-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://elearning.man1metro.sch.id/__statics/gudangsoal/files/facebook-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://elearning.man1metro.sch.id/__statics/gudangsoal/files/tiktok-free-movies_GM835599320.pdfIn PDF document text
    • http://elearning.man1metro.sch.id/__statics/gudangsoal/files/roblox-free-no-download_GM431946152.pdfIn PDF document text
    • http://elearning.man1metro.sch.id/__statics/gudangsoal/files/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://elearning.man1metro.sch.id/__statics/gudangsoal/files/coin-master--hack_GM406889139.pdfIn PDF document text
    • http://elearning.man1metro.sch.id/__statics/gudangsoal/files/online-hacking-tricks-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.man1metro.sch.id/__statics/gudangsoal/files/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.man1metro.sch.id/__statics/gudangsoal/files/easy-way-to-get-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_off00005066.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5066 24080 bytes
SHA-256: b03b531d86591cf1c94d400c4af466f0808db6f00bda38304d7c10ae375add57
font_01_sfnt_off00008707.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8707 18344 bytes
SHA-256: 9d921b2eee93f33e2efc5c53c848117e08d630d06cf868d7193b51dd4894dd93

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