Malicious PDF — malware analysis report

Static analysis result for SHA-256 84e77366a1fac5ba…

MALICIOUS

PDF

41.7 KB Created: 2021-05-03 06:08:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: d92e701407f9f93b84aa2abac6ecf143 SHA-1: b0891910b1b80b17a3bacd9f7cff421eca5692b1 SHA-256: 84e77366a1fac5ba490aee819e7901a163924e112ccd3d9a289cf343b72b49fa
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a prominent lure for a "Roblox Bloxburg Hack Game Guardian" and a "CLICK HERE TO ACCESS ROBLOX GENERATOR" call to action. It embeds multiple URLs, with the primary one pointing to a site offering game hacks, strongly suggesting a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded links indicate a malicious workflow designed to redirect users to potentially harmful content.

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/roblox-bloxburg-hack-game-guardian-game-hack PDF link annotation
    • https://lib.stie-yai.ac.id/repository/everything-free-in-roblox-catalog.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/roblox-robux-hack-2021.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-hack-any-items-free-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-roblox-account-with-rpbux-password.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-run-animation-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-get-any-costume-for-free-in-roblox.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/e400-free-roblox-gal.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/hack-free-robux-pastebin.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/how-to-get-free-robux-in-roblox-ipad.pdfIn PDF document text
    • https://lib.stie-yai.ac.id/repository/free-mask-on-roblox.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_off000041e4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x41E4 26356 bytes
SHA-256: ca2e2948db7e9a09aca9ba7978b6835718efba4903a01a74c890e602bbbae3f6
font_01_sfnt_off00007eb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB9 19164 bytes
SHA-256: 82d6255ed7464a060545c30feb8a96dc82caf34254619d90b2915ae977ac3dfe

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