Malicious PDF — malware analysis report

Static analysis result for SHA-256 faff17c2bb76f1d5…

MALICIOUS

PDF

43.8 KB Created: 2021-06-02 06:00:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: 0335e8cef728c3326250ec5515846a0e SHA-1: 82c7e5d01e6ec37b022d1293a05b157d87a16eba SHA-256: faff17c2bb76f1d5cb43b70bc19b8f10ece3ed0aede2d34521c79844277aa81c
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links to known malicious redirectors and game hack lures, indicating an attempt to trick users into visiting compromised sites. The document body and heuristics suggest a lure for game cheats or free downloads, which is a common tactic for distributing malware or conducting phishing. No scripts were extracted, but the embedded URLs and the nature of the lures strongly suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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.xyz/app/479516143/minecraft-pocket-edition-free-download-game-hack In PDF document text
    • http://lib.vipklh.ru/repository/coin-master-free-spins-2021-hack_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-apk_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-minecraft-addons_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/hack-to-protect-village-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/pokemon-go-free-to-play-guide_GM1094591345.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-34-6-hack_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/online-coin-master-hack-here_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-instantly_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_off00005156.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5156 23840 bytes
SHA-256: 02691de59cc28fb5a3e30e6d83b6ebced9b102763a0d3c22bde3c6f9b69c732d
font_01_sfnt_off000087dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87DC 18616 bytes
SHA-256: 74c3d0dac38db02fae044005a19145e6493ffdefda41676fc7dac63f0b05f007

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