Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c821e06f112e5d6…

MALICIOUS

PDF

47.5 KB Created: 2021-06-03 14:33:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d09354b45e46fd6998c4ebcc8f04f11d SHA-1: 7f96a5784df63c34df0ccb24a508b7760ad7c318 SHA-256: 5c821e06f112e5d6bfbfaa6c80184e037bb629995017458cc6bcaa608d7b3181
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, many of which are SEO-optimized to appear as legitimate resources for game hacks and freebies. The primary URL, https://netcdn.online/app/406889139/coin-master-hack-without-verification-for-iphone-game-hack, suggests a lure for potentially malicious content. The presence of a "download button" heuristic further supports the idea that the document is designed to trick users into downloading unwanted software or visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9769

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/coin-master-hack-without-verification-for-iphone-game-hack
    • http://lib.stiesultanagung.ac.id//repository/free-spins-on-coin-master-game_GM406889139.pdf
    • http://lib.stiesultanagung.ac.id/repository/get-free-cards-for-coin-master_GM406889139.pdf
    • http://lib.stiesultanagung.ac.id//repository/coin-master-card-hack-apk_GM406889139.pdf
    • http://lib.stiesultanagung.ac.id//repository/free-daily-spins-coin-master-2021_GM406889139.pdf
    • http://lib.stiesultanagung.ac.id//repository/how-to-get-minecraft-for-free-on-android_GM479516143.pdf
    • http://lib.stiesultanagung.ac.id//repository/coin-master-cards-hack-2021_GM406889139.pdf
    • http://lib.stiesultanagung.ac.id/repository/get-free-tiktok-followers_GM835599320.pdf
    • http://lib.stiesultanagung.ac.id/repository/coin-master-mod-apk-free-download-for-android_GM406889139.pdf
    • http://lib.stiesultanagung.ac.id//repository/robux-offers_GM431946152.pdf
    • http://lib.stiesultanagung.ac.id/repository/free-robux-come_GM431946152.pdf
    • http://lib.stiesultanagung.ac.id/repository/real-minecraft-for-free_GM479516143.pdf
    • http://lib.stiesultanagung.ac.id//repository/free-robux-generator-codes_GM431946152.pdf
    • http://lib.stiesultanagung.ac.id/repository/google-play-coin-master-free-spins_GM406889139.pdf
    • http://lib.stiesultanagung.ac.id/repository/robuxmatchcom-free-robux_GM431946152.pdf
    • http://lib.stiesultanagung.ac.id/repository/pubg-uc-qiymeti_GM1330123889.pdf
    • http://lib.stiesultanagung.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdf
    • http://lib.stiesultanagung.ac.id//repository/coin-master-free-spins-link-2021-app_GM406889139.pdf
    • http://lib.stiesultanagung.ac.id//repository/links-to-get-free-coins-in-coin-master_GM406889139.pdf
    • http://lib.stiesultanagung.ac.id/repository/how-to-get-minecraft-java-edition-for-free_GM479516143.pdf
    • http://lib.stiesultanagung.ac.id/repository/coin-master-free-spins-link-2021-no-verification-deutsch_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off000054c1.bin
9cfb3003d3d3fe0b9700f5ef645c6515f6be62d1018bf350b253c5ee7c625cd4		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x54C1 24620 bytes
font_01_sfnt_off00008c2e.bin
30dce2b9c1950da345d7fed8f00c38887adfa2f2ddecc31775af2315e819ac37		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C2E 2840 bytes
font_02_sfnt_off000095e1.bin
b0c3a89d711ec100aafe578ee7b28ea2727b66157cc397f5079d3cb8995e9fec		 pdf-font-stream PDF embedded font (sfnt) at offset 0x95E1 18696 bytes

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