Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa46dfd1bc7af5bc…

MALICIOUS

PDF

35.0 KB Created: 2021-06-29 20:27:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: d3994440ab0d7f24ae9dd616ad65b408 SHA-1: ab9d90efdfea973b84a2be5bdf9811fdb0c0e3b9 SHA-256: aa46dfd1bc7af5bc0f45ddf20c844e5e2d951b346f5abf3daa3362485f5f6315
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/431946152/how-to-get-free-robux-using-inspect-element-2021-game-hack PDF link annotation
    • https://lib.btkljogja.or.id/repository/free-tiktok-fans-app_GM835599320.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-inspect-code-2021_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-roblox-logo-favor-bag_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-find-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-dto-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/advanced-battle-roblox-hack_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/minecraft-bedrock-for-free_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-cheat-way-up-volcano-lumber-tycoon-2_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/vehicle-simulator-hack-roblox_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/get-free-robux-please_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/mcpe-hacks_GM479516143.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-free-login_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/how-to-get-free-robux-on-ios-2021_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-hack-version-33-2_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-card-giver-roblox_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/coin-master-free-spin-realme-products_GM406889139.pdfIn PDF document text
    • https://lib.btkljogja.or.id/repository/free-robux-human-verification_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_off000030bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30BF 21836 bytes
SHA-256: d2e0e9653a3fe1ec48a31da3834af1ab20e11eb662732e04ff4766f7ebb32cb2
font_01_sfnt_off000060e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E9 20016 bytes
SHA-256: d3924d4e3eccdc84f066e792e597b45bee04a6ff3053dca4b66b935645da06c1

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