Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cc0786dcb6f1d7b…

MALICIOUS

PDF

36.5 KB Created: 2021-07-04 09:51:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 9abc22f8492b40aea5a197ff67485ba8 SHA-1: c903414d60cd8779457805b6e38fe16ab9ceef69 SHA-256: 5cc0786dcb6f1d7bf2ddce6a3540a3a11c46215cfd006ce433c2d266f931158b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded URLs and a prominent call-to-action in its body text, luring users towards promises of free in-game currency and hacks. The ML classifier strongly flagged this PDF as malicious, indicating a high probability of it leading to a harmful download or exploit. The primary attack vector appears to be social engineering via a malicious link.

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.tw/app/431946152/free-robux-kid-friendly-no-human-verification-game-hack In PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-hack-apk-35-33_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-spins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-robux-2021-febuary_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/buy-old-accounts-for-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/coin-master-spins-free-2021_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan//repository/free-limiteds-roblox_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-chloes-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-get-free-robux-yahoo-answers_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/ccv5-roblox-dbfp-hack-tuto-2021_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-get-free-robux-with-roblox-gift-word-press_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/mcpe-hacks_GM479516143.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/roblox-free-robux-generator-no-survey-and-humen_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/how-to-hack-roblox-jailbreak-2021-money_GM431946152.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/coin-master-daily-spins_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/coin-master-daily-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • http://fkunismuh.org/perpustakaan/repository/hackear-coin-master-sin-verificacion_GM406889139.pdfIn PDF document text
    • http://www.fkunismuh.org/perpustakaan/repository/free-minecraft-premium-account_GM479516143.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_off000034b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34B1 22848 bytes
SHA-256: 1b54c8f9ffe0f1be9f71f3022d645aad665643538477f8fe965eecd26afcba18
font_01_sfnt_off000067dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67DC 19760 bytes
SHA-256: 81aab0412cfb0a87b1895216bf4af503bb533c0e0c6228ebd3d86b300273636c

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