Malicious PDF — malware analysis report

Static analysis result for SHA-256 a226d282421864a2…

MALICIOUS

PDF

42.5 KB Created: 2021-04-29 05:06:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e396e8a6ddd8bbb8e5468ebad731cd95 SHA-1: 8bd06a7773e9359fc0df88b79585e4c6c5f6b626 SHA-256: a226d282421864a241c47d512d9978f289f2e6f7b5eaeedfeb90bdb1f9bfe9b6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and cheat codes, directing users to a suspicious URL. The ML classifier strongly indicates maliciousness, and the presence of multiple embedded URLs further supports a phishing or redirection attempt. No scripts were extracted, but the document's content and embedded links are designed to trick users into visiting potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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/431946152/cheat-codes-for-roblox-mad-city-game-hack PDF link annotation
    • http://www.saburai.ac.id/elibrary//repository/robux-hack-2021-pastebin-working.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-be-crushed-by-a-speeding-wall-hack-script.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/hack-tener-muchos-diamantes-en-royale-high-roblox.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/hats-roblox-free.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-get-free-catalog-items-on-roblox-2021.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-cheat-engine-download-2021.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-hack-through-walls-on-roblox-jailbreak.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/how-to-hack-to-get-roblox-money.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/roblox-membership-hack.pdfIn PDF document text
    • http://www.saburai.ac.id/elibrary//repository/hack-robux-survey.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_003_off0000467c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x467C 26288 bytes
SHA-256: 0448c7a084350900fdb4d2541c24c81a70f3adaedf78e2335a570a45102a251e
font_01_sfnt_off00008224.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8224 19116 bytes
SHA-256: ef816f9fab554c5daa7983c6ec3ca5a101d458d3922b598900be1829af34dcee

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