Malicious PDF — malware analysis report

Static analysis result for SHA-256 4480ce0ae30b5a84…

MALICIOUS

PDF

47.9 KB Created: 2021-05-11 05:03:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 32e9c52e35fd50a9bc551b5d2358f67e SHA-1: bc660c413327e960b458bf901210129a946bec60 SHA-256: 4480ce0ae30b5a8470cfe09370fcb73eeb56193297215552a38f619c27c9e8d8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/roblox-april-fools-hack-game-hack PDF link annotation
    • http://www.mostraining.co.za/images/roblox-bloxburg-hack_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/blogger-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • http://www.mostraining.co.za/images/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/coin-master-email-rewards-link_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/earn-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/how-to-change-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/coin-master-free-stuff_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://www.mostraining.co.za/images/coin-master-time-speed-hack_GM406889139.pdfIn PDF document text
    • http://www.mostraining.co.za/images/free-robux-2021-no-human-verification_GM431946152.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_off0000488b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x488B 28844 bytes
SHA-256: c6badc83bd367dabbab5869dae4aa69b9ad2b38c42c4e4f4ad821f627ffc12e5
font_01_sfnt_off00008ad8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AD8 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off000097e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x97E9 18640 bytes
SHA-256: 410f22dfa3a1d00d561499a0339a6a41be2e954e3f9c73b2d892c6afca972cb0

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