Malicious PDF — malware analysis report

Static analysis result for SHA-256 d4fc6a9ecdf280d7…

MALICIOUS

PDF

45.3 KB Created: 2021-06-03 08:55:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 2556fa5def652a10bdba96cc2d4b3c12 SHA-1: 05075c8d232aadcbeaf44915f941929e9923ef31 SHA-256: d4fc6a9ecdf280d77e830ca593180622e7200979e74329a9ea552dbcbaea5fcf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains links to a known malicious redirector, masquerading as a generator for game hacks. The embedded URLs and the document body content strongly suggest a lure to trick users into visiting malicious sites, likely for credential harvesting or further malware delivery. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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 https://netcdn.online/app/406889139/coin-master-hack-apk-download-latest-version-game-hack In PDF document text
    • http://lc.pustaka.unand.ac.id/repository/free-robux-sites-2021_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/free-private-minecraft-server_GM479516143.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/www-coin-master-hack-tk_GM406889139.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/free-minecraft-texture-packs-java_GM479516143.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/free-spins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/how-to-play-coin-master_GM406889139.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/coin-master-game-hack-apk_GM406889139.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/free-spins-coin-master-2021-hack_GM406889139.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/spin-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/free-robux-wheel_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/coin-master-free-spin-whatsapp-group-link_GM406889139.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/coin-master-hack-ios-download_GM406889139.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://lc.pustaka.unand.ac.id/repository/tiktok-free-coins-apk_GM835599320.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn 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_004_off00005535.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5535 25572 bytes
SHA-256: e57e4e613c0a8af5d1112ce75abd5682282b2655fb5ee0867b7d4855359e13c0
font_01_sfnt_off00008d5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D5D 18608 bytes
SHA-256: a4e47816b5170685e7869daf89b86d4021f47da3ee65e903ef7401822799ffdd

Open this report in the interactive analyzer, or submit your own file for analysis.