Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cecaed4557a9c1b…

MALICIOUS

PDF

33.7 KB Created: 2021-07-03 13:13:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bd8d0ed48f21e53cf8770e0ffbeb66aa SHA-1: 09aac4c1ffe1d9251ca038559d27e88234d2bae8 SHA-256: 5cecaed4557a9c1b5619e7bfbda2b659e4ba2e2a6ea9f6bc26fd845b09e64593
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or generators. The primary lure URL is http://netcdn.tw/app/479516143/minecraft-free-download-2021-game-hack, which is flagged as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at tricking users into visiting potentially harmful sites.

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/479516143/minecraft-free-download-2021-game-hack In PDF document text
    • http://www.hlad.hr/files/coin-master-hack-without-root_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/free-roblox-toy-codes-not-used_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/free-robux-for-mac_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/cheat-engine-63-roblox-apocalypse-rising_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/free-rich-account-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-hacks-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/roblox-jailbreak-hack-script-2021_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/toolbox-apk_GM479516143.pdfIn PDF document text
    • http://www.hlad.hr/files/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/roblox-robux-cheat-engine-download_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/master-coin-hack-app_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-hacks-xyz_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/minecraft-rtx-download-free_GM479516143.pdfIn PDF document text
    • http://www.hlad.hr/files/roblox-retail-tycoon-hack-money_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://www.hlad.hr/files/roblox-free-play_GM431946152.pdfIn PDF document text
    • http://www.hlad.hr/files/free-robux-roblox-promo-codes_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_off00002dad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DAD 22092 bytes
SHA-256: 0e1e212e1889dc467e610a9b896c08dbb4577ad1c76e92edaf4c6f283120305f
font_01_sfnt_off00005eb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EB7 18980 bytes
SHA-256: 36976dda1236646de4177dc54acc9d6ee631510c343a87c6d0858b98a716bba5

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