Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e7b4506fdf2651d…

MALICIOUS

PDF

48.8 KB Created: 2021-05-16 13:22:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 33181968340114722a3c2a1efa39ee03 SHA-1: 23a4fc43510680ac55974347b0b758eee71243ff SHA-256: 2e7b4506fdf2651decb72db6b0e7a3f3b58795455b7b8c9c863beb09cf61f3d7
142 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, designed to trick users into clicking embedded links. These links, such as https://netcdn.xyz/app/431946152/how-to-get-free-robux-gift-cards-game-hack, likely lead to scam websites. The document also contains a large number of external links, suggesting a link farm intended to drive traffic to potentially malicious or scam-related content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8642

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/431946152/how-to-get-free-robux-gift-cards-game-hack
    • http://www.visionledindia.com/uploaded_files/userfiles/files/minecraft-mojang-free_GM479516143.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/how-can-i-play-minecraft-for-free_GM479516143.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/hack-to-get-free-spins-on-coin-master_GM406889139.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/coin-master-free-spins-and-coins-haktuts_GM406889139.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/coin-master-hack-spins-free_GM406889139.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/free-robux-stream_GM431946152.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-ios_GM479516143.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/free-spin-coin-master-game_GM406889139.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/actual-free-robux_GM431946152.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/robux-survey_GM431946152.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/robux-rewards_GM431946152.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/flame-gg-free-robux_GM431946152.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/free-spin-link-for-coin-master-game_GM406889139.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/roblox-no-download-hack_GM431946152.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/free-robux-gift-card-generator_GM431946152.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/free-coin-master-hacks-no-verification_GM406889139.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/is-there-an-actual-hack-that-work-for-coin-master_GM406889139.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/free-robux-hack-generator_GM431946152.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/extra-free-spins-for-coin-master_GM406889139.pdf
    • http://www.visionledindia.com/uploaded_files/userfiles/files/how-to-get-free-spins-on-coin-master-facebook_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c40.bin
0b7f510d9b652fc14f89a520201f23fb65a55af25625a95c1600108a30f4a0de		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C40 24372 bytes
font_01_sfnt_off00008405.bin
972979c3a46100cf5f8fd289bc6fbd2496ff75fec0e3f6753648c72ec6eba714		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8405 2820 bytes
font_02_sfnt_off00008d9f.bin
9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D9F 5596 bytes
font_03_sfnt_off00009a47.bin
db707177e1a0df533614fd289cf2b470ee37edf039339bb568c3977480a042bc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9A47 18804 bytes

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