Malicious PDF — malware analysis report

Static analysis result for SHA-256 d449f62191826d9d…

MALICIOUS

PDF

45.3 KB Created: 2021-05-11 14:36:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1040657d54a66d10defd265289285c64 SHA-1: ccb1f2721a8a7bbe5744bf2fb4261add7246b7e3 SHA-256: d449f62191826d9d7262052f1cf4b62ed1b9413e3b6403dff33b711900936d1b
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are SEO-optimized and point to pages offering cheats or hacks for popular games like Coin Master and Roblox. The ML classifier also flagged this PDF as malicious. The presence of these links suggests a phishing or scam attempt, likely to direct users to malicious websites or download unwanted software.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9551

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-spins-for-coin-master-2021-game-hack
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/minecraft-free-download-unblocked_GM479516143.pdf
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/coin-master-free-spins-promo-code_GM406889139.pdf
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/roblox-hack-game_GM431946152.pdf
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/robux-generator-without-human-verification-2021_GM431946152.pdf
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/coin-master-cheat-apk-free-download_GM406889139.pdf
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/get-free-robux-without-doing-anything_GM431946152.pdf
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/free-robux-hack-generator_GM431946152.pdf
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/coin-master-hack-for-android_GM406889139.pdf
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/how-to-get-infinite-robux_GM431946152.pdf
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/get-more-robux_GM431946152.pdf
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/como-descargar-coin-master-hackeado_GM406889139.pdf
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/codes-how-to-get-free-robux_GM431946152.pdf
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/static-moonactive-net-link_GM406889139.pdf
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/coin-master-free-spins-cheat_GM406889139.pdf
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/free-ways-to-get-robux_GM431946152.pdf
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/coin-master-free-spins-link-download_GM406889139.pdf
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/spin-coin-master-free_GM406889139.pdf
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/free-roblox-girl-hair-not-a-model_GM431946152.pdf
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/free-24-7-minecraft-server_GM479516143.pdf
    • https://e-learning.mtsduktb.com/__statics/gudangsoal/files/coin-master-ios-hack-download_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a51.bin
0672297d5e71c06c86b7f6bd099b241b38570205766dd059153d1cce9e4c39c6		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A51 24372 bytes
font_01_sfnt_off000081cf.bin
c953d730e49f69c7d62e02a926729ae4a31de13d9a976dc4a95b39cf47066c93		 pdf-font-stream PDF embedded font (sfnt) at offset 0x81CF 3560 bytes
font_02_sfnt_off00008e54.bin
66febbde5b4b2b6a44609229e8681f3f0581fff3ed5f82ed8e3d83342858c217		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E54 18288 bytes

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