Malicious PDF — malware analysis report

Static analysis result for SHA-256 d68122680543dc4f…

MALICIOUS

PDF

34.4 KB Created: 2021-06-28 07:53:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-26
MD5: b34b517c6e3242054cb4f7836147117d SHA-1: 3512838f042dd672f26fadc029de2a165eb46479 SHA-256: d68122680543dc4fb4eef3e9f672c6cb5bab94e4ea4c85237813f080840da947
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to malicious infrastructure, masquerading as a 'free generator / game hack' for Roblox. The presence of a visual download button and the overall lure suggest a phishing or scam attempt. The document's content and embedded links strongly indicate a malicious intent to redirect users to potentially harmful sites.

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/free-commands-roblox-game-hack In PDF document text
    • http://lib.vipklh.ru/repository/elysian-roblox-hack-free_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-get-things-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/red-cropped-top-and-ripped-jeans-roblox-outfit-free_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/jailbreak-roblox-cheat-may-20-2021_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-free-exploits_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/free-bc-roblox-android_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-earn-robux-for-free-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/hacks-for-unlimited-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-hack-download-apk_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/roblox-free-clothes-in-catalog_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/how-to-use-python-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.vipklh.ru/repository/account-being-hacked-on-roblox-with-2-step_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_off00003023.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3023 22200 bytes
SHA-256: f2c069e17262f74b8c4b2a50f3dfa9726dc71999c40ffefbad29e383a1ec044e
font_01_sfnt_off00006180.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6180 19084 bytes
SHA-256: c99df341913f43d517560c8604f9d83051b85a5106d6ed0908e61165f88919a4

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