Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ab67a483312ef4b…

MALICIOUS

PDF

45.9 KB Created: 2021-05-14 03:02:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 28d0992a33dbaeb6e043c8a1178fa1f6 SHA-1: ec4a3de1fb8e13bdce4fc90df6c753df43f6aa01 SHA-256: 3ab67a483312ef4bd4373e137aae6ca2e50032a8c36033cc50d9bf06610f02e1
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites promising game hacks and free currency, a common lure for phishing or malware distribution. The ML classifier also flagged this PDF as malicious. While no scripts were directly extracted, the PDF structure and embedded URIs suggest a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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-hack-roblox-to-get-robux-game-hack PDF link annotation
    • http://www.peterbarsony.com/userfiles/files/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-spin-app-coin-master_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/teach-me-to-hack_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/minecraft-bedrock-client_GM479516143.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/roblox-free-clothes-codes_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/how-to-free-robux_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/coin-master-game-2021-free-spin-link_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/coin-master-hack-ios-download_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/cute-free-roblox-outfits_GM431946152.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/coin-master-hack-no-survey-or-verification_GM406889139.pdfIn PDF document text
    • http://www.peterbarsony.com/userfiles/files/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c39.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C39 24960 bytes
SHA-256: f03872ce6324762565f343472dc5c0d27cc11c14c7296de8f7984623566d9459
font_01_sfnt_off00008624.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8624 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off00008fd3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FD3 18588 bytes
SHA-256: 6723e17a0e3ea7e17da9fa5ee91cb22fe0fa4706a6f3d09ae44dda015c08872b

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