Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecc6ad6b29720bbc…

MALICIOUS

PDF

35.4 KB Created: 2021-07-04 01:56:44 +07:00 Authoring application: Aspose Ltd. (via Aspose.Pdf for .NET 10.1.0) First seen: 2021-10-05
MD5: 50a9274213f0191c4fd5dc45451051ea SHA-1: ce4d695afb56c6083c357d5762eb273bc88203b0 SHA-256: ecc6ad6b29720bbc58c262ff7990b8c1e2de4485cd62747439310945aef50ca8
112 Risk Score

Malware Insights

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

The PDF contains numerous links disguised as helpful guides for obtaining free in-game items for popular games like Coin Master and Roblox. These links predominantly point to the cryptorace.net domain, suggesting a link farm or redirector designed to lure users to potentially malicious sites. The presence of a 'download button' lure heuristic further supports the intent to trick users into clicking through.

Machine Learning

  • Nyx PDF Classifier clean score 0.1378

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://cryptorace.net/netcdn.tw/app/406889139/how-do-i-get-free-spins-in-coin-master-game-hack PDF link annotation
    • http://cryptorace.net/cryptorace.net/elearning.man2kojam.sch.id/__statics/gudangsoal/files/coin-master-free-spins-iphone-2021_gm406889139.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/elearning.man2kojam.sch.id/__statics/gudangsoal/files/free-games-roblox-free-online_gm431946152.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/elearning.man2kojam.sch.id/__statics/gudangsoal/files/how-to-get-a-lot-of-robux_gm431946152.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/elearning.man2kojam.sch.id/__statics/gudangsoal/files/how-to-get-1-million-robux-for-free-2021_gm431946152.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/elearning.man2kojam.sch.id/__statics/gudangsoal/files/minecraft-multiplayer-free_gm479516143.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/elearning.man2kojam.sch.id/__statics/gudangsoal/files/wurst-commands_gm479516143.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/elearning.man2kojam.sch.id/__statics/gudangsoal/files/minecraft-java-edition-code-free_gm479516143.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/elearning.man2kojam.sch.id/__statics/gudangsoal/files/free-spins-coin-master-unlimited_gm406889139.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/elearning.man2kojam.sch.id/__statics/gudangsoal/files/free-robux-generator-no-survey-no-download-no-human-verification_gm431946152.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/elearning.man2kojam.sch.id/__statics/gudangsoal/files/free-robux-with-adblocker_gm431946152.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/elearning.man2kojam.sch.id/__statics/gudangsoal/files/google-how-do-you-get-free-robux_gm431946152.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/elearning.man2kojam.sch.id/__statics/gudangsoal/files/javascript-free-robux_gm431946152.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/elearning.man2kojam.sch.id/__statics/gudangsoal/files/pixies-gigantic-coin-master-free-spins-and-coins_gm406889139.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/elearning.man2kojam.sch.id/__statics/gudangsoal/files/how-to-hack-roblox_gm431946152.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/elearning.man2kojam.sch.id/__statics/gudangsoal/files/free-robux-without-verification_gm431946152.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/elearning.man2kojam.sch.id/__statics/gudangsoal/files/hack-coin-master-for-android_gm406889139.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/elearning.man2kojam.sch.id/__statics/gudangsoal/files/free-roblox-premium_gm431946152.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/elearning.man2kojam.sch.id/__statics/gudangsoal/files/how-to-hack-a-minecraft-server-and-make-yourself-op_gm479516143.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/elearning.man2kojam.sch.id/__statics/gudangsoal/files/how-to-get-free-tiktok-fans-without-human-verification_gm835599320.pdfIn PDF document text
    • http://cryptorace.net/cryptorace.net/elearning.man2kojam.sch.id/__statics/gudangsoal/files/how-do-u-get-roblocks-on-roblox-for-free_gm431946152.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In 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_off000033b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33B5 22868 bytes
SHA-256: 2ef56be1d5be9d55b329e187b39fba35b490fe786f900b1f494339bd5b6012c7
font_01_sfnt_off00006627.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6627 18508 bytes
SHA-256: 5fa4adbbb2c865a19aa6c2d7661c2270d24b48d73078d2e2d8c4fb61005cd4a1