Malicious PDF — malware analysis report

Static analysis result for SHA-256 32500c77c7edd3c7…

MALICIOUS

PDF

42.1 KB Created: 2021-05-13 19:30:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e97d279a30d38014b96bc29f3f1a649f SHA-1: c43a8d8a51bc5ed8a283037e320a37f0e6d57aa3 SHA-256: 32500c77c7edd3c7e62078c06a11ff6f7ea7279fe13e6c31d8c3946a409cd837
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded links that redirect to websites offering game hacks and cheats, such as 'Coin Master' and 'Robux'. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' and the presence of numerous related URLs strongly indicate a social engineering tactic to trick users into visiting potentially malicious sites. No scripts were extracted, but the document's primary function appears to be directing users to external resources for illicit game modifications.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/coin-master-mod-apk-latest-version-free-download-game-hack PDF link annotation
    • https://www.manmed.info:443/images/coin-master-hack-xyz-download-free_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/oprewards-robux_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-free-spins--coins-2021_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-minecraft-mods-for-pc_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-game-hunters-club_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/minecraft-wurst_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/coin-master-spins-hack-iphone_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-unlimited-coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • https://www.manmed.info:443/images/can-i-have-robux_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-robux-today_GM431946152.pdfIn PDF document text
    • https://www.manmed.info:443/images/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • https://www.manmed.info:443/images/op-rewards-free-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_003_off000048ee.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48EE 24220 bytes
SHA-256: 6f8f6f1c91261596be98de652839de9acf512a0f75d3102751e8231cfb5fbd08
font_01_sfnt_off000080b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80B4 18768 bytes
SHA-256: 098af02799cf2b7f8f93edcb406077ac8ee5b067a9eee3508b0ecec52efbc455

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