Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c542504842bf233…

MALICIOUS

PDF

35.2 KB Created: 2021-07-01 17:25:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c91ea3e9cffaabafe64776c95d6221dc SHA-1: 6905debe04f52f8c266030cad8c5333dc37d6488 SHA-256: 1c542504842bf23321de54f1f71c93ea2b6c7883126a27fccefb6ecec5db1f8c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document contains multiple links to known malicious redirectors, specifically advertising game hacks and generators for popular games like Roblox. The document body and heuristics indicate a lure to download or access potentially unwanted or malicious content. The primary malicious activity observed is the redirection to external sites designed to host further malicious payloads or scams.

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/beyond-roblox-cheat-engine-game-hack In PDF document text
    • http://library.yamasi.ac.id/repository/roblox-btools-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/eternal-empire-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-hack-tool-online-no-download_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/hack-coin-master-apk-31_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/veil-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-free-coins-facebook_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/javascript-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/cheat-buddy-roblox-esp_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/earn-rbx_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-royalty-free-music-ominous-60_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-bleach-soul-of-end-hack_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-coin-master-hack_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
stream_002_off00003013.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3013 23472 bytes
SHA-256: 29cf6f615bc846aec248603b49c7e31386ac2d0838b0b246533cb8a7c76cf86d
font_01_sfnt_off0000641a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x641A 19232 bytes
SHA-256: 43f7fea2b56813a294241d0cfdadf139a850a16d9c94a68b4a43cbeb15b08303

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