Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a2cd0ca5d6b0584…

MALICIOUS

PDF

35.0 KB Created: 2021-06-29 15:37:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 16d52da8dafd6c60e5730dd064d8d0e3 SHA-1: 531d4e5ad6310ee34d26889c3a9fd2ee5535629d SHA-256: 2a2cd0ca5d6b05848a916a8f2844f00a8e917a2d3962e2ce525572b59eea2280
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector infrastructure, specifically advertising free game hacks and generators for popular games like Roblox and Coin Master. The primary lure URL is http://netcdn.co/app/431946152/the-game-roblox-for-free-game-hack, which is flagged as malicious. While no scripts were extracted, the document's structure and embedded URLs strongly suggest a phishing or scam attempt designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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.co/app/431946152/the-game-roblox-for-free-game-hack In PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/free-script-executor-roblox_GM431946152.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/free-star-codes-2021-roblox_GM431946152.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/roblox-extension-free_GM431946152.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/free-robux-tampermonkey-code_GM431946152.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/how-can-i-get-free-coinsn-coin-master_GM406889139.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/coin-master-official-fan-page_GM406889139.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/daily-coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/free-25-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/roblox-arsenal-hacks-download_GM431946152.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/coin-master-free-spin-reward-links_GM406889139.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/free-robux-obbys-may-2021_GM431946152.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/coin-master-map_GM406889139.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/free-apk-mods-coin-master_GM406889139.pdfIn PDF document text
    • http://www.studiolorenzale.it/lorenzale/ckfinder/userfiles/files/toolbox-for-minecraft-pe-ios_GM479516143.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_off00003182.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3182 22592 bytes
SHA-256: 7d285910d2ab71317fecd5e55b1f08db56964effb4921c534885a55458b2c93d
font_01_sfnt_off000063fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63FD 19076 bytes
SHA-256: 26a300f48c20b48a148914e42c4e5b54fc0f18dc22924e962873bdb8b9f33dd5