Malicious PDF — malware analysis report

Static analysis result for SHA-256 e3d94e1ea1f789dd…

MALICIOUS

PDF

33.8 KB Created: 2021-07-05 13:55:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 5672f1aa4761e0753afa048bd81b6b25 SHA-1: 160c06695739e8fefbb1e46dfeb6aa5854cef068 SHA-256: e3d94e1ea1f789ddb19da38d5752404d6b542401284c5f3c1c0bdda69e865507
82 Risk Score

Malware Insights

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

The PDF document contains a high-confidence heuristic firing for a 'game hack' redirect lure, pointing to a URL that promises free Roblox items. The document body and numerous extracted URLs reinforce this theme, suggesting a social engineering tactic to trick users into visiting malicious sites. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/how-to-make-good-roblox-thumbnails-for-youtube-free-game-hack PDF link annotation
    • http://library.umla.ac.id//repository/freerobuxhack-us_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-headless-head-roblox_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-roblox-private-server_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-monster_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-please_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-how-to-get-stuff-for-free_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/user-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/lua-code-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/minecraft-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/change-roblox-username-free_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/best-minecraft-hacked-client-2021_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/freespinandcoin_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-minecraft-severs_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/minecraft-mac-free_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-claim-spins_GM406889139.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
font_00_sfnt_off00002d1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D1C 21256 bytes
SHA-256: 99ba20522840b07a05fc65736acaa777a99fd88798054805a70e692064628219
font_01_sfnt_off00005b7f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B7F 20308 bytes
SHA-256: abbe0ab1cec5e737a4ea56567ff258651f5521682a28da07e6d3ca273baa4621