Malicious PDF — malware analysis report

Static analysis result for SHA-256 0618ea39cd062238…

MALICIOUS

PDF

41.5 KB Created: 2021-05-12 14:00:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b0f889803b21c0e2afdf02f0d00dc008 SHA-1: 7c766767f098021e6437dfeaedbc7dd4e4d6e26f SHA-256: 0618ea39cd0622380e8d707844015f3d4c3a33a7b7895bac2bf310abe36f167c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are related to game hacks and free in-game currency, such as Robux. The primary URL, https://netcdn.xyz/app/431946152/how-to-get-robux-for-free-2021-game-hack, is flagged as a redirector for game hacks. This suggests a social engineering tactic to lure users to potentially malicious sites. No scripts were extracted, but the PDF structure and embedded URIs strongly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/how-to-get-robux-for-free-2021-game-hack PDF link annotation
    • http://www.sbairs.com/datas/files/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/pixies-gigantic-coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-hack-apk-2021-ios_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/minecraft-hack-client-18-9_GM479516143.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/rich-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-free-spins-app-android_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-to-get-free-outfits-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/minecraft-book-collection_GM479516143.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/gaming-dunia-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/regal-world-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sbairs.com/datas/files/free-robux-2021_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
font_00_sfnt_off000047aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x47AA 23980 bytes
SHA-256: c50fc37a201062490b827e2c9d5e127dc44a311f7babadf13efb4ec1120babaa
font_01_sfnt_off00007e45.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E45 18684 bytes
SHA-256: 65f445f0396e54760dd2a1edc1744209422bc48f29c35ea74a9bcb72e79f8b06

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