Malicious PDF — malware analysis report

Static analysis result for SHA-256 209cc44fb1eaf014…

MALICIOUS

PDF

34.2 KB Created: 2021-06-30 08:29:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5408cc4b1bee37d28233f4e36b6ad96d SHA-1: 7a25080ca8343a1e83573e45aff30bfc2816bd15 SHA-256: 209cc44fb1eaf014a387087b0064977b5a61cdcee0e12ecf23b1a78ba1e70bbe
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a game hack redirector lure, directing users to a known malicious URL. The document body and embedded URLs reinforce this theme, promoting 'free Robux' and 'game hacks'. This indicates a phishing or social engineering attempt to trick users into visiting a malicious site, likely to download malware or engage in further fraudulent activity.

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-robux-hack-generator-2021-game-hack In PDF document text
    • https://library.iuli.ac.id/repository/azupte-cheat-roblox_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-332-apk-free-download_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/vip-server-free-roblox_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/protosmasher-roblox-hack-free_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-coin-master-s_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-get-free-robux-on-roblox-easy-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-roblox-redeem-cards-nov-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-use-cheat-engine-on-roblox-retail-tycoon_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-get-free-robux-with-games_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-tiny-tanks-hack_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/good-free-items-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/www-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/caught-my-girlfriend-cheating-in-roblox_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/minecraft-gun-games-free_GM479516143.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-links-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-coin-master-generator_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-hack-robux-on-roblox-mobile_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_off00002fa0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FA0 21880 bytes
SHA-256: 71563ec76e1f9f1275d9c7b78755b1bba24a52d38b139995da66422a664cc019
font_01_sfnt_off00005f9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F9A 19392 bytes
SHA-256: a86a66aa215c4a6c1420a316fad1dc44acfead0b6237a5d506d2957225a2c08b

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