Malicious PDF — malware analysis report

Static analysis result for SHA-256 64a65bf3ee00590e…

MALICIOUS

PDF

32.1 KB Created: 2021-06-25 01:39:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2b335faf162bfb073e7be616310d9f6c SHA-1: e5351bade7de72643c6c3d79c8aa6a3f441a7853 SHA-256: 64a65bf3ee00590e7c290f95efad98cde876589ad847e91f79ed98a2b5b97e16
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, masquerading as a generator for free Robux and game hacks. The document body explicitly mentions 'Growbux Get Free Robux' and includes a call-to-action to access a 'ROBUX GENERATOR'. This indicates a phishing or scam attempt designed to lure users to malicious websites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/growbux-get-free-robux-game-hack In PDF document text
    • https://schulzpressetext.de/images/free-robux-site-no-survey_GM431946152.pdfIn PDF document text
    • https://schulzpressetext.de/images/what-tiktok-free-likes_GM835599320.pdfIn PDF document text
    • https://schulzpressetext.de/images/coin-master-hack-apk-35-13_GM406889139.pdfIn PDF document text
    • https://schulzpressetext.de/images/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://schulzpressetext.de/images/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • https://schulzpressetext.de/images/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • https://schulzpressetext.de/images/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://schulzpressetext.de/images/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://schulzpressetext.de/images/free-limiteds-roblox_GM431946152.pdfIn PDF document text
    • https://schulzpressetext.de/images/free-imits-in-catolg-in-roblox_GM431946152.pdfIn PDF document text
    • https://schulzpressetext.de/images/how-to-get-free-roebucks-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://schulzpressetext.de/images/account-stealing-hack-roblox-zero_GM431946152.pdfIn PDF document text
    • https://schulzpressetext.de/images/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • https://schulzpressetext.de/images/coin-master-free-food_GM406889139.pdfIn PDF document text
    • https://schulzpressetext.de/images/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://schulzpressetext.de/images/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://schulzpressetext.de/images/cheats-to-get-cars-in-car-crashers-2-roblox_GM431946152.pdfIn PDF document text
    • https://schulzpressetext.de/images/2021-hacking-roblox_GM431946152.pdfIn PDF document text
    • https://schulzpressetext.de/images/get-free-robux-gg_GM431946152.pdfIn PDF document text
    • https://schulzpressetext.de/images/free-daily-spins-from-coin-master_GM406889139.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_off000029b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29B9 21484 bytes
SHA-256: 743b4f245d0178794fa359a2d1782d2f95958148c0c7c8e992cbfc61dfa515a5
font_01_sfnt_off000058b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58B4 18984 bytes
SHA-256: bb1d54f7cd41d4eb6894213362364ea5520db8dc923c013f612c5d32cba869e4

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