Malicious PDF — malware analysis report

Static analysis result for SHA-256 f280c6f86bf1f044…

MALICIOUS

PDF

31.3 KB Created: 2021-07-19 21:10:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5c733ba8fed281fde6bda4dd1b3e1ea7 SHA-1: 2655e62f3145b8af9c450072f8fbd0dd7cb37b73 SHA-256: f280c6f86bf1f0448270de1e87e770a82237c39b790e5d844b85693fec5d4add
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and further PDF lures, disguised as game hacks and generators. The document body explicitly mentions 'Classic Minecraft Net Hacks' and 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', reinforcing the lure. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9893

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/classic-minecraft-net-hacks-game-hack In PDF document text
    • http://greenoase.be/images/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
    • http://greenoase.be/images/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://greenoase.be/images/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://greenoase.be/images/minecraft-bedrock-server-hosting-free_GM479516143.pdfIn PDF document text
    • http://greenoase.be/images/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://greenoase.be/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://greenoase.be/images/robux-hack_GM431946152.pdfIn PDF document text
    • http://greenoase.be/images/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://greenoase.be/images/coin-master-free_GM406889139.pdfIn PDF document text
    • http://greenoase.be/images/free-robux-generator-no-human-verification-2021_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_off00002b5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B5E 21408 bytes
SHA-256: cc5b6ad90efde7ae21f0e5cc1c3b682014dabaeb57ac9d1bbe509e93164f3c5c
font_01_sfnt_off000059b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59B2 17812 bytes
SHA-256: 06eb0692cb0ff670c8084f221f19fc536b6b0c4a84b00058b05a05adc7fae17c

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