Malicious PDF — malware analysis report

Static analysis result for SHA-256 35c6121222e5560e…

MALICIOUS

PDF

45.5 KB Created: 2021-05-13 20:36:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 205f8cef554896c394c982882986bf18 SHA-1: 108dcd86b4c1604c173421ac8410ddde2a62e58a SHA-256: 35c6121222e5560e24c50a39904f63a210a66ac685e1c1aad7c138a0e2626ce3
142 Risk Score

Malware Insights

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

This PDF document exhibits characteristics of a malicious lure, employing a fake CAPTCHA to deceive users into interacting with malicious links. The document contains a large number of external links, many of which appear to be SEO-optimized for scam-related content such as free spins or game accounts. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a deceptive attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/406889139/how-to-get-free-spins-on-coin-master-facebook-game-hack
    • https://edu.mtsannajah.sch.id/__statics/gudangsoal/files/free-account-roblox-with-robux_GM431946152.pdf
    • https://edu.mtsannajah.sch.id/__statics/gudangsoal/files/coin-master-free-spins-hack_GM406889139.pdf
    • https://edu.mtsannajah.sch.id/__statics/gudangsoal/files/coin-master-daily-spin-free_GM406889139.pdf
    • https://edu.mtsannajah.sch.id/__statics/gudangsoal/files/how-do-i-get-free-robux_GM431946152.pdf
    • https://edu.mtsannajah.sch.id/__statics/gudangsoal/files/coin-master-gameplay_GM406889139.pdf
    • https://edu.mtsannajah.sch.id/__statics/gudangsoal/files/how-to-hack-any-roblox-account_GM431946152.pdf
    • https://edu.mtsannajah.sch.id/__statics/gudangsoal/files/free-coins-for-coin-master_GM406889139.pdf
    • https://edu.mtsannajah.sch.id/__statics/gudangsoal/files/minecraft-hack-mod_GM479516143.pdf
    • https://edu.mtsannajah.sch.id/__statics/gudangsoal/files/roblox-ban_GM431946152.pdf
    • https://edu.mtsannajah.sch.id/__statics/gudangsoal/files/free-minecraft-account-and-password_GM479516143.pdf
    • https://edu.mtsannajah.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux_GM431946152.pdf
    • https://edu.mtsannajah.sch.id/__statics/gudangsoal/files/hack-the-game-coin-master_GM406889139.pdf
    • https://edu.mtsannajah.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdf
    • https://edu.mtsannajah.sch.id/__statics/gudangsoal/files/how-to-get-free-roblox_GM431946152.pdf
    • https://edu.mtsannajah.sch.id/__statics/gudangsoal/files/coin-master-200-spin-link_GM406889139.pdf
    • https://edu.mtsannajah.sch.id/__statics/gudangsoal/files/how-to-make-clothes-on-roblox-for-free_GM431946152.pdf
    • https://edu.mtsannajah.sch.id/__statics/gudangsoal/files/best-free-roblox-executor_GM431946152.pdf
    • https://edu.mtsannajah.sch.id/__statics/gudangsoal/files/mcpe-master-hack-unlimited-coins_GM406889139.pdf
    • https://edu.mtsannajah.sch.id/__statics/gudangsoal/files/easy-roblox-today_GM431946152.pdf
    • https://edu.mtsannajah.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-hack-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d89.bin
682b96e0d347b0dba75549d86ea272961654e9789bddf2fe947a9946844770e1		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D89 24884 bytes
font_01_sfnt_off00008581.bin
381f6d859be141449dd645f7be1484d2a1cf49218dc471b402dae69eaa2b11d5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8581 2824 bytes
font_02_sfnt_off00008f24.bin
71bee5fb83ca58b21c1d24b393ac6a95aa3d07cb2aa8ee860216aa324e2c09d6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F24 18380 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.