Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ff9176065acbc5c…

MALICIOUS

PDF

35.4 KB Created: 2021-07-05 00:53:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: bef76e73900fc1fcdf2b551ca7817fc7 SHA-1: f21eab2b66000debacc77d73e610c9d2d0a05bd7 SHA-256: 1ff9176065acbc5c1cad3cd63e2bb2a3ec4f2ae2d9ae592b7bdb635b82ba5c83
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a lure for 'free Robux' and game hacks, indicating a phishing or scam attempt. The ML classifier strongly flagged this PDF as malicious. The primary URL, http://netcdn.tw/app/431946152/free-robux-no-human-verification-2021-game-hack, is likely the destination for the malicious payload or further redirection.

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/free-robux-no-human-verification-2021-game-hack PDF link annotation
    • http://elearning.minailululum.site/__statics/gudangsoal/files/fb-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.minailululum.site/__statics/gudangsoal/files/regal-world-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.minailululum.site/__statics/gudangsoal/files/play-kill-hack-roblox_GM431946152.pdfIn PDF document text
    • http://elearning.minailululum.site/__statics/gudangsoal/files/lazyblocks-com-robux_GM431946152.pdfIn PDF document text
    • http://elearning.minailululum.site/__statics/gudangsoal/files/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://elearning.minailululum.site/__statics/gudangsoal/files/hackear-roblox-android_GM431946152.pdfIn PDF document text
    • http://elearning.minailululum.site/__statics/gudangsoal/files/how-to-get-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://elearning.minailululum.site/__statics/gudangsoal/files/coin-master-32-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://elearning.minailululum.site/__statics/gudangsoal/files/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.minailululum.site/__statics/gudangsoal/files/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://elearning.minailululum.site/__statics/gudangsoal/files/free-minecraft-domain_GM479516143.pdfIn PDF document text
    • http://elearning.minailululum.site/__statics/gudangsoal/files/coin-master-3rd-village-free-2021-gift-card_GM406889139.pdfIn PDF document text
    • http://elearning.minailululum.site/__statics/gudangsoal/files/how-to-hack-roblox-accounts-tutorial-scripting_GM431946152.pdfIn PDF document text
    • http://elearning.minailululum.site/__statics/gudangsoal/files/blogger-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://elearning.minailululum.site/__statics/gudangsoal/files/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://elearning.minailululum.site/__statics/gudangsoal/files/coin-master-code-for-free-spins_GM406889139.pdfIn PDF document text
    • http://elearning.minailululum.site/__statics/gudangsoal/files/gainblox-gg-robux-free_GM431946152.pdfIn PDF document text
    • http://elearning.minailululum.site/__statics/gudangsoal/files/free-minecraft-videos_GM479516143.pdfIn PDF document text
    • http://elearning.minailululum.site/__statics/gudangsoal/files/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://elearning.minailululum.site/__statics/gudangsoal/files/free-online-dater-clothes-roblox_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
font_00_sfnt_off000030d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30D9 22624 bytes
SHA-256: 68fcf620974d61d4d0d28c2dfc7cbfb796289b90a6ce7a95431b37425bd1cca9
font_01_sfnt_off0000634b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x634B 19736 bytes
SHA-256: 354295dcb16db07fec6852cf507e3dd09a8f39b1f712ecea2001cf8559992bf9

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