Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c76fcc5931f62fb…

MALICIOUS

PDF

48.4 KB Created: 2021-06-03 08:14:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f8662695fc93c62456d47a6bb1b17b14 SHA-1: a7898796742a6dd38ac8eceaaa9dd46fc07e35bb SHA-256: 3c76fcc5931f62fb5c43b09c1f41d81f4beb34b206f49fd245ee90eb4cf09032
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a game hack lure, which is a common social engineering tactic. The embedded URL, https://netcdn.online/app/406889139/free-spins-coin-master-without-survey-game-hack, likely leads to a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to trick the user into downloading further malicious content, likely through a spearphishing attachment vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.online/app/406889139/free-spins-coin-master-without-survey-game-hack PDF link annotation
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/free-vpn-for-minecraft_GM479516143.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/free-roblox-groups_GM431946152.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/free-coin-master-links_GM406889139.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/free-daily-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/where-can-i-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/free-robux-redeem-codes_GM431946152.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/coin-master-hack-2021-ios-download_GM406889139.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/best-free-roblox-executor_GM431946152.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/2021-no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.kdlscaffolding.ie/uploaded_files/userfiles/files/pokemon-go-free-hack_GM1094591345.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_004_off00005229.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5229 26796 bytes
SHA-256: b55edcd82b395226a280dd56f6061b29c8e05a7e517ad4a80a0f78b82026c424
font_01_sfnt_off00008f5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F5A 2880 bytes
SHA-256: 10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132
font_02_sfnt_off00009945.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9945 18684 bytes
SHA-256: ad7fa04790fc34b76c8e1b16c403c61c32ceaee032d5a8afb0071baf0a254118

Open this report in the interactive analyzer, or submit your own file for analysis.