Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e6f3a26129cf3b8…

MALICIOUS

PDF

47.0 KB Created: 2021-05-13 08:01:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7067167d4958227a94ee8594860a8f0e SHA-1: 03a71522b48270061753e28a9c62c0eb8cbee762 SHA-256: 0e6f3a26129cf3b8ff6b9ce0c694476d5ee865e1cfc38dc725583fc610efab2a
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of external links, many of which are structured as SEO spam, suggesting a link farm or content redirection scheme. The presence of a download button lure and the ML classifier's high confidence score indicate a malicious intent to direct users to potentially harmful content or downloads. The primary URL identified is https://netcdn.xyz/app/406889139/free-coins-for-coin-master-blogger-game-hack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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.xyz/app/406889139/free-coins-for-coin-master-blogger-game-hack
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/free-spins-coin-master-2021-no-verification_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/main/repository/coin-master-hack-apk-android_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/real-free-robux-generator_GM431946152.pdf
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/free-coins-spins-on-coin-master_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/main/repository/coin-master-hack-apk-download-2021_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/main/repository/master-coin-hack-mod_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/get-gold-coin-master-village-hack_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/but-link-says-free-robux_GM431946152.pdf
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/how-to-get-minecraft-windows-10-for-free-with-java_GM479516143.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/how-to-get-free-minecraft-windows-10_GM479516143.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/minecraft-mobile-free_GM479516143.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/hack-coin-master-8-ball-pool_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/free-daily-spins-coin-master-2021_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/wurst-client-download_GM479516143.pdf
    • http://lib.bppsdmp.pertanian.go.id/main/repository/coin-master-free-spins-link-app-download_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/main/repository/minecraft-bedrock-free-with-java_GM479516143.pdf
    • http://lib.bppsdmp.pertanian.go.id/main/repository/how-to-get-free-coins-on-coin-master-iphone_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/free-spin-coin-master-instagram_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/main/repository/free-robux-kid-friendly_GM431946152.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/coin-master-hack-mod-apk-unlimited-spin-download_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e90.bin
610fa074444e47e0d2a84e4e2ee7ca14cf3649ea5076298198250460aac8e3b8		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E90 25548 bytes
font_01_sfnt_off000088b7.bin
c953d730e49f69c7d62e02a926729ae4a31de13d9a976dc4a95b39cf47066c93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x88B7 3560 bytes
font_02_sfnt_off0000953d.bin
525699ae71861fffeab431a07c950b4914d38a871fb98becad0e0bea9ac3f1df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x953D 18288 bytes

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