Malicious PDF — malware analysis report

Static analysis result for SHA-256 0216bf5e249fe0dd…

MALICIOUS

PDF

45.8 KB Created: 2021-06-08 13:48:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 22fc518c768eccd67441171810f28661 SHA-1: b11d68c8aed5930692f8abe14c05ff7857516865 SHA-256: 0216bf5e249fe0dd645d75117861fd7dcbe503b3f9f9432fb34e0d705aadc9e0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'free Robux' and includes a high-confidence heuristic firing for a game hack redirect. The embedded URLs point to external sites that likely host further malicious content or phishing pages. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect the user to a malicious site, likely for credential harvesting or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/how-to-hack-free-robux-game-hack PDF link annotation
    • https://shimony.net/images/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/free-robux-website_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/free-roblox-accounts-with-robux_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/roblox-hack-stealing-items_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/speed-hack-roblox-2021-may_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/how-to-hack-on-cbro-roblox_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/get-roblox-games-for-free_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/robux-earning-websites_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • https://shimony.net/images/free-robux-link_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • https://shimony.net/images/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/coin-master-games-hack_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • https://shimony.net/images/today-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://shimony.net/images/how-to-hack-peoples-roblox-accounts_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
stream_004_off00004be2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BE2 29392 bytes
SHA-256: 83662b2f6cd72bc7c67ed4984f284513912bfd4f3709a539f3b119b3549ec502
font_01_sfnt_off00008fae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FAE 18576 bytes
SHA-256: 7b4d7727a6693f4eac074772c753a8c5eba770e0c3137288eba478847637852d

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