Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cee42b6d9caaa7a…

MALICIOUS

PDF

32.4 KB Created: 2021-07-06 11:15:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5387a67a831efbdf262262e0f913b780 SHA-1: 73a340950e67c41ea36917fcd083e21242278a82 SHA-256: 5cee42b6d9caaa7a27c945805e5dad51d99ebe9aa91b85ca9005479051ea11d9
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'generators'. The ML classifier also flagged this PDF as malicious. The primary attack pattern involves luring users to click these links, likely to download further malware or engage in phishing. No scripts were extracted, but the embedded links are the main threat.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

Heuristics 3

  • 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.
  • 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/406889139/coin-master-free-food-game-hack In PDF document text
    • http://library.stieyapan.ac.id/repository/hacks-for-sailing-roblox_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/minecraft-115-2-hacks_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/roblox-generator-com_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/how-to-get-free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-daily-free-spins-hack_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-tiktok-engagement_GM835599320.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-spins-coin-master-october-17-2021_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/minecraft-free-reddit_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-tricks_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/microsoft-roblox_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/coin-master-working-hack_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/rblx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/add-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/roblox-generator-no-verification_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000032da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32DA 23252 bytes
SHA-256: 1787d1d7155c1e0dbe048927534706d7f17701dc3c6d93f617b2dd32eff4c3a7

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