Malicious PDF — malware analysis report

Static analysis result for SHA-256 0967aee4b25a838a…

MALICIOUS

PDF

47.4 KB Created: 2021-05-12 18:31:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 4f5fd4eb23bef30986eef5496dc88e7d SHA-1: ed4eaf6a3bd2c48d08828c7a804941f42d22e2d6 SHA-256: 0967aee4b25a838a07262a1f9708e502a31ba20edd5e0243dc9b479b82c3d9d3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free Robux generator' and 'game hack' content, directing users to a suspicious URL. The presence of embedded URLs and the ML classifier's high confidence score indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest a phishing or scam attempt, likely involving a redirect to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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.xyz/app/431946152/free-robux-generator-no-human-verification-game-hack PDF link annotation
    • http://michalmatys.pl/images/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://michalmatys.pl/images/coin-master-hack-tool-without-verification_GM406889139.pdfIn PDF document text
    • http://michalmatys.pl/images/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://michalmatys.pl/images/hack-coin-master-download_GM406889139.pdfIn PDF document text
    • http://michalmatys.pl/images/como-hackear-el-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://michalmatys.pl/images/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
    • http://michalmatys.pl/images/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://michalmatys.pl/images/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://michalmatys.pl/images/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • http://michalmatys.pl/images/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://michalmatys.pl/images/can-you-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://michalmatys.pl/images/minecraft-tools_GM479516143.pdfIn PDF document text
    • http://michalmatys.pl/images/coin-master-free-stars_GM406889139.pdfIn PDF document text
    • http://michalmatys.pl/images/robux-free-co_GM431946152.pdfIn PDF document text
    • http://michalmatys.pl/images/free-coins-and-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://michalmatys.pl/images/roblox-shirt-template-free_GM431946152.pdfIn PDF document text
    • http://michalmatys.pl/images/minecraft-toolbox-premium-apk_GM479516143.pdfIn PDF document text
    • http://michalmatys.pl/images/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://michalmatys.pl/images/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • http://michalmatys.pl/images/coin-master-spin-link-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d23.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D23 26292 bytes
SHA-256: 6801c30341e4aaa643a75522b417690ab7279a4bbb54888dad42f1c2df01106d
font_01_sfnt_off00008b5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B5E 2828 bytes
SHA-256: db1860fd79a3f2cbe32e2bada3ba4c68a2d581b7a24294387cd777233cc9cef6
font_02_sfnt_off00009515.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9515 18860 bytes
SHA-256: f1337887e63f46ec65b145f76804780e669468724c6330ac6fa0452b843b30d3