Malicious PDF — malware analysis report

Static analysis result for SHA-256 cade9abba99d9c93…

MALICIOUS

PDF

41.2 KB Created: 2021-04-23 12:45:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: ed2fe53db85cb1b04c2556efd89febc3 SHA-1: 6eb5260158ecf95ada96ccc1d62ec4fb800cd7a9 SHA-256: cade9abba99d9c93e95f727892695b167417caba711989a110e81899aad4419b
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for a 'Roblox Hack' which redirects to a suspicious URL. The document body and heuristics indicate a social engineering tactic to trick users into clicking the link, likely leading to a malicious download or phishing page. No scripts were extracted, but the embedded URLs are highly suspicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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://netsecure.top/app/431946152/roblox-hack-lumber-tycoon-2-2021-game-hack PDF link annotation
    • http://sudamericarural.org/images/how-to-get-free-robux-by-roblox.pdfIn PDF document text
    • http://sudamericarural.org/images/roblox-fight-the-monsters-cheats.pdfIn PDF document text
    • http://sudamericarural.org/images/roblox-hack-retail-tycoon.pdfIn PDF document text
    • http://sudamericarural.org/images/free-roblox-usernames-and-passwords-with-robux.pdfIn PDF document text
    • http://sudamericarural.org/images/free-robux-generator-without-human-verification-2021.pdfIn PDF document text
    • http://sudamericarural.org/images/redeem-roblox-card-code-free.pdfIn PDF document text
    • http://sudamericarural.org/images/free-100-robux-code.pdfIn PDF document text
    • http://sudamericarural.org/images/free-roblox-accounts-with-admin-permissions.pdfIn PDF document text
    • http://sudamericarural.org/images/roblox-hack-explorer-2021.pdfIn PDF document text
    • http://sudamericarural.org/images/event-free-robux.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_off00003f85.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3F85 26028 bytes
SHA-256: 271b013b86b1c9a2b784dff3ff47c634f2a6c232ac166f3953d36d422b22cd46
font_01_sfnt_off00007c5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5F 19164 bytes
SHA-256: 9dee3b6c16e697ae9755948cc1ef2bd96eb43ab32dd7771f7acd5ee76ba84f20

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