Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bbdaa0ffcf4d1f4…

MALICIOUS

PDF

33.8 KB Created: 2021-07-05 00:02:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: f59245fe09a3e7c36fc0782ef491adfc SHA-1: 36d31397c84239e6b2f97059a374dd47393d56af SHA-256: 7bbdaa0ffcf4d1f425fddc135e91f001a3202a4cdb3e70d2393cabe3ce2bc4d7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary lure pointing to 'free coin master stuff' and game hacks. This suggests a social engineering tactic to redirect users to potentially malicious websites. While no scripts were extracted, the heuristic firings indicate the document's intent is to deceive users into clicking these links, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/free-coin-master-stuff-game-hack PDF link annotation
    • http://lib.icbc-indonesia.org//repository/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/coin-master-event-hack_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/coin-master-free-spin-2912-2021_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-star-codes-roblox_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-robux-rapido_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/fighting-free-card-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/how-to-get-free-robux-august-2021_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-free-printables_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/free-hair-roblox_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-royale-high-school-cheats_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/coin-master-hack-ios-10_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/hacked-roblox-account-username-and-password_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/master-coin-hack_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-coin-app_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/fastest-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/how-to-car-music-hack-roblox-apocalypse-rising_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
font_00_sfnt_off00002edf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EDF 22900 bytes
SHA-256: 108dfedeedfe2a009d69efa54feca16e5d208a7498dd1088bb371600c79c199e
font_01_sfnt_off000061e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E5 18140 bytes
SHA-256: 0adbfa1a4dab6338e13ea67aa32732ad7a3b3fbafcfb99206ef3c7e6ec11ff9e

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