Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c5326b8009fbe01…

MALICIOUS

PDF

36.8 KB Created: 2021-05-22 07:09:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 821180cff5de4ca6dc541c2cb99591e5 SHA-1: 69f1c1dd08361c731cb92d21554b8ba74333f45a SHA-256: 1c5326b8009fbe01289487f5fd265fb5abc3f24306c6bfba7f6fd63b8786ddc9
82 Risk Score

Malware Insights

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

The PDF document contains multiple external links disguised as "hacked clients" or "generators" for popular games, aiming to trick users into downloading malicious content. The presence of a "CLICK HERE TO ACCESS MINECRAFT GENERATOR" text further reinforces the social engineering lure. While no scripts were directly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to potentially malicious sites that may host further exploits or malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 https://netcdn.xyz/app/479516143/minecraft-windows-10-hacked-client-game-hack PDF link annotation
    • http://razredna-nastava.net/files/coin-master-free-spins-link-no-verification_GM406889139.pdfIn PDF document text
    • http://razredna-nastava.net/files/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/vpn-for-tiktok-free_GM835599320.pdfIn PDF document text
    • http://razredna-nastava.net/files/minecraft-pocket-edition-free_GM479516143.pdfIn PDF document text
    • https://razredna-nastava.net/files/coin-master-free-spins-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_off000035ae.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35AE 24408 bytes
SHA-256: 22585fdc974d9cdecf817801f2853a2aac4d4d1b097dfdc650209cd032bcf86c
font_01_sfnt_off00006d09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D09 18768 bytes
SHA-256: f9a71ab68452ae4ccd094805e59123059ba28481ac44c73a337d9a6d18fc1d00

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