Malicious PDF — malware analysis report

Static analysis result for SHA-256 e422c4e9816f1af3…

MALICIOUS

PDF

44.8 KB Created: 2021-06-03 06:14:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: a2baf42be8bfab3474852f5c70a8525e SHA-1: aa2ab2632f86f36f2048b906abc908e2966daf63 SHA-256: e422c4e9816f1af36f6edd3c1114c363c5edd6bdfa6174347962a5c948e6ed5b
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of embedded links, many of which point to SEO-optimized PDF files related to game hacks and cheats. One prominent URL, https://netcdn.online/app/406889139/https-iosgodscom-topic-20218flipmastercoinshack-game-hack, suggests a potential download or redirection to malicious content. The presence of a "download button" heuristic further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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/https-iosgodscom-topic-20218flipmastercoinshack-game-hack
    • http://perpus.wdh.ac.id/repository/how-to-play-minecraft-online-for-free_GM479516143.pdf
    • http://perpus.wdh.ac.id/repository/coin-master-hack-without-verification_GM406889139.pdf
    • http://perpus.wdh.ac.id/repository/coin-master-hacked-apk-download-for-android_GM406889139.pdf
    • http://perpus.wdh.ac.id//repository/coin-master-hack-2021-no-human-verification_GM406889139.pdf
    • http://perpus.wdh.ac.id/repository/haktuts-coin-master-hack_GM406889139.pdf
    • http://perpus.wdh.ac.id/repository/coin-master-free-spin-and-coin_GM406889139.pdf
    • http://perpus.wdh.ac.id/repository/how-to-get-free-robux-on-roblox-2021_GM431946152.pdf
    • http://perpus.wdh.ac.id//repository/coin-master-hack-tool-exe_GM406889139.pdf
    • http://perpus.wdh.ac.id/repository/how-to-hack-coin-master-with-game-guardian_GM406889139.pdf
    • http://perpus.wdh.ac.id/repository/hacker-minecraft-song_GM479516143.pdf
    • http://perpus.wdh.ac.id/repository/coin-master-hack-no-download_GM406889139.pdf
    • http://perpus.wdh.ac.id/repository/coin-master-spin-link-2021_GM406889139.pdf
    • http://perpus.wdh.ac.id/repository/pig-master-free-spins-and-coins_GM406889139.pdf
    • http://perpus.wdh.ac.id/repository/hack-version-of-coin-master-apk-download_GM406889139.pdf
    • http://perpus.wdh.ac.id/repository/www-coinmaster-com_GM406889139.pdf
    • http://perpus.wdh.ac.id/repository/coin-master-cheats-free-spins_GM406889139.pdf
    • http://perpus.wdh.ac.id/repository/coin-master-free-spins-link-2021-twitter_GM406889139.pdf
    • http://perpus.wdh.ac.id/repository/how-to-get-minecraft-for-free_GM479516143.pdf
    • http://perpus.wdh.ac.id//repository/near-pubg-uc-code_GM1330123889.pdf
    • http://perpus.wdh.ac.id//repository/coin-master-links-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005179.bin
4eb08fd2772accb7eddfd7466c801c7fbe33b97bdd666afd612f6c5b7ffcf049		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5179 24296 bytes
font_01_sfnt_off000088d9.bin
9a4617d3fa0c2de9acca914b1ff7249b797273b35f2b1f7391a5426bd568bdc3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88D9 19628 bytes

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