Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd0c37747ea24fab…

MALICIOUS

PDF

34.2 KB Created: 2021-07-06 00:34:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 22c449b16eb57d16bd52a8cb57511e58 SHA-1: 9bf7b2bd8dcdfe30aa564cff7185ffbdfdd1bb64 SHA-256: fd0c37747ea24fab346b126a50ec159b44796d4a687094a83980d316d78c75d8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, disguised as game hacks and cheats. The primary URL, http://netcdn.tw/app/406889139/coin-master-unlimited-spin-hack-mod-apk-game-hack, is identified as a lure for game-related exploits. The document body and embedded URLs reinforce this theme, suggesting a phishing or scam attempt to trick users into visiting malicious sites. No scripts were extracted from this sample.

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.tw/app/406889139/coin-master-unlimited-spin-hack-mod-apk-game-hack In PDF document text
    • http://lib.mbp.ac.id/repository/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/roblox-gang-rape_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-card-collection-hack_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/how-to-get-free-stuff-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/minecraft-mod-menu-apk_GM479516143.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/how-to-get-free-1-million-robux_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/hack-de-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-coins-and-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/aimbot-download-roblox-free_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/roblox-hack-elemental-battlegrounds_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mbp.ac.id/repository/free-roblox-toy-codes-not-used_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_off00002f46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F46 22408 bytes
SHA-256: 74180da5e21adfaae1a610be2d195b5734bf2ee24fb63a36fe2477daad4390e4
font_01_sfnt_off0000610d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x610D 18876 bytes
SHA-256: 7e2ee907f2feac738be75e17c27693a65f159ea6ad788202b30771c529da622a

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