Malicious PDF — malware analysis report

Static analysis result for SHA-256 1d431e9de912ccdf…

MALICIOUS

PDF

33.8 KB Created: 2021-06-24 13:32:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3aa27358dfe4978267f514041b6818e2 SHA-1: 4bfb0f82c0dd84e28fcb206fac87a32a54687dcb SHA-256: 1d431e9de912ccdf0ec4c6221ff52ff951e9083dfe67f137a1657b66e50eb925
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure, presenting itself as a 'game hack' generator to entice users into clicking a link. The primary link, http://netcdn.co/app/479516143/wizard-hacks-game-hack, is directly associated with the game hack lure. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a malicious workflow designed to redirect users to potentially harmful content or initiate downloads. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/479516143/wizard-hacks-game-hack PDF link annotation
    • https://www.advancissurgical.com/uploads/files/files/hack-exploit-roblox-download_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-get-free-robux-on-mobile_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/roblox-hacking-kqko_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-coin-and-spin-link_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/roblox-account-hacking-v3rmillion_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/roblox-free-hair-codes_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/coinmaster-gps-user-review-coinmaster-coin-master-hack-pagedemo-index_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/does-robux-hacknet-work_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-roblox-codes-no-download_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/roblox-blox-piece-hack_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/roblox-free-clothes-girl_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/how-to-get-free-bc-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/unlimited-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/www-bandicam-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/super-simon-says-hack-roblox-espaol_GM431946152.pdfIn PDF document text
    • https://www.advancissurgical.com/uploads/files/files/free-roblox-accounts-with-robux-that-work-not-banned_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_off00002fbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FBB 22360 bytes
SHA-256: 2db7d87d43dcd2015e0e1d39bcb4dd4e760b378f31fc7c283651a46f58291666
font_01_sfnt_off00006144.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6144 18376 bytes
SHA-256: f665832626808531659451e28624cfd6690abe3ebc4486c0e184f15273d13575

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