Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c994ec07949002c…

MALICIOUS

PDF

35.1 KB Created: 2021-06-19 22:48:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 10e45184accfa43b87f5fcc918d3006c SHA-1: 8b0f92cdf5d21ffd1266c718f6a0444f6a024f85 SHA-256: 1c994ec07949002c3ca5dbe537d2e4c49b11595b1fbebe82080a4d3445f4cd92
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including a prominent one to 'netcdn.co', which is flagged as a lure for game hacks. The document's content and heuristics indicate it is designed to trick users into visiting malicious websites, likely for credential harvesting or further malware delivery. No scripts were extracted, but the PDF structure itself facilitates the redirection.

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-admin-on-roblox-2021-game-hack PDF link annotation
    • http://www.sapaengineering.kz/images/coin-master-free-pet-food_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/free-robux-safe_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/minecraft-texture-packs-free-download_GM479516143.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/coin-master-code-hack_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/haktuts-coin-master-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/como-hackear-robux_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/clients-minecraft_GM479516143.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/roblox-steves-one-piece-hack-tp-chest_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/coin-master-hack-iosgods_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/hack-place-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/coin-master-daily-spins_GM406889139.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://www.sapaengineering.kz/images/how-do-you-get-free-robux-on-roblox_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_off000031b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31B5 21636 bytes
SHA-256: 7d2e475dac5cd9b0d0a4d862238486dc1a2594a1165f59f5de80e9bf5745e2f0
font_01_sfnt_off00006186.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6186 19876 bytes
SHA-256: 458f3378ba11ade4fcc45e4c14be0002d4e4aa6f859099dc43c1bfdfabccb26a

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