Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5599cf5a087e020…

MALICIOUS

PDF

33.5 KB Created: 2021-06-19 02:05:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8d70e6abbcd153892755b1abf6fc5469 SHA-1: e0f25c318ba5d558ca6884f64afc57f47d28ab57 SHA-256: f5599cf5a087e02002a5cc7b790bb72deedbfa74ac572e83c5cb01b0f061b3a1
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites that are flagged as malicious redirectors, specifically promoting game hacks and in-game currency generators. The document body and embedded URLs strongly suggest a lure to trick users into visiting these sites, likely to download malware or engage in scams. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of malicious intent.

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/roblox-robux-hack-pc-game-hack In PDF document text
    • http://internetdeputy.com/images/roblox-face-err-free_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://internetdeputy.com/images/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://internetdeputy.com/images/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/coin-master-hack-mod-apk-unlimited-spins_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/roblox-fashion-famous-hack-script_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/create-free-roblox-account_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/free-stuuf-in-roblox_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/coin-master-game-hacks_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/www-robux-com_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/free-robux-link_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/free-robux-redeem-code-hack_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/how-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/como-obrtener-10000-robux-de-verdad-hack_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/roblox-free-gift-card-org_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://internetdeputy.com/images/roblox-woodland-money-hack_GM431946152.pdfIn PDF document text
    • http://internetdeputy.com/images/free-robux-2021-no-human-verification_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_off00002e2b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E2B 21828 bytes
SHA-256: b1f15b99161f0e3ea2f32e0e16ead9f9b12966a5a700308a0cc16f377ebadb84
font_01_sfnt_off00005e8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E8A 18764 bytes
SHA-256: d0f9685450da74d9bce3b8c3d4a3ef0089c15734203b6561f6aed3824534c2f2

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