Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a7ff7d18c2c400e…

MALICIOUS

PDF

35.5 KB Created: 2021-06-28 02:41:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b25ba94915f21b2ccdde1023237683c5 SHA-1: 629a96b467eeba47afaa3e3abae0718c7d18c9e4 SHA-256: 3a7ff7d18c2c400eae6f1ce8f197654a49b1493d07ff8a93cf39017a04948ac2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free game hacks and currency to trick users into clicking malicious links. The embedded URLs, such as http://netcdn.co/app/431946152/free-paint-hwo-to-draw-a-realist-eye-roblox-game-hack, are known to lead to malicious redirectors. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a phishing or scam attempt designed to redirect users to potentially harmful content.

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-paint-hwo-to-draw-a-realist-eye-roblox-game-hack In PDF document text
    • http://digilib.stiki.ac.id/repository/free-robux-net_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/pig-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/if-roblox-wasn-t-free_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/avatar-the-last-airbender-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/how-to-fly-in-roblox-using-cheat-engine_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/toolbox-for-minecraft-pe-ios_GM479516143.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/hack-for-freeeeeeeeeeeeee-robux-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/how-to-get-minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/free-roblox-red-pants_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/how-to-hack-roblox-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/free-roblox-hbe_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/how-to-call-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/secret-free-roblox-hats-2021_GM431946152.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/coin-master-hack-without-human-verification-india_GM406889139.pdfIn PDF document text
    • http://digilib.stiki.ac.id/repository/free-coin-master-cards_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_off0000314f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x314F 22756 bytes
SHA-256: fb543c2ef6540190f7f2d3b950bd6744cf96dfe58e0aa65fb02a663f0161a3e5
font_01_sfnt_off0000642c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x642C 19540 bytes
SHA-256: 87b133b22a8261d66dcc03c894cdf4511934172242b0f6e6195e1598e071a8dc

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