Malicious PDF — malware analysis report

Static analysis result for SHA-256 09ac0c068ee6be8f…

MALICIOUS

PDF

54.9 KB Created: 2021-05-11 21:00:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: cbe4819136349983083f5ce179583a1b SHA-1: 35899df58cb94290c0e34df95ba2d0d657bd417a SHA-256: 09ac0c068ee6be8f0c589d0e018caf8297c39de88f0aee27a9ae455a08dded5b
142 Risk Score

Malware Insights

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

The PDF document exhibits characteristics of a malicious lure, presenting a fake CAPTCHA to trick users into interacting with embedded links. The presence of a large number of external links, many pointing to game-related cheats and hacks, suggests a phishing or malware distribution attempt. The ML classifier also flagged this PDF as malicious with a high probability.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8324

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/free-roblox-hack-us-game-hack
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/wurst-mc_GM479516143.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-roblox-adopt-me-accounts_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-instagram_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-2021_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/how-to-robux_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification-2021_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/minecraft-for-free-on-phone_GM479516143.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/coin-master-free-coins-link-blogspot_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/how-to-get-a-refund-on-roblox-2021_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-free-download_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/robux-games_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-robux-scams_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-robux-script_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-roblox-hair-girl_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/coin-master-gold-cards-free_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/coin-master-com_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/free-robux-no-verification-no-download_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/coin-master-hack-download-android_GM406889139.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-website_GM431946152.pdf
    • http://e-learning.man2balam.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004da0.bin
910b7e25d567428af3146253b51a5a5ddf9e7fe7227a681cfea227f71b0f44a2		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DA0 25856 bytes
font_01_sfnt_off0000897f.bin
f6b9a386ee4e0aff622a98b2230905da71eab0ca98398cb52018fda3528d3e2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x897F 3964 bytes
font_02_sfnt_off000096e3.bin
ae114634718854704d615808d33fb1b747d90eb28e420080bd5adbdfe7fb6a27		 pdf-font-stream PDF embedded font (sfnt) at offset 0x96E3 6700 bytes
font_03_sfnt_off0000a716.bin
e59bc53cd4c0ee65dc1533becad2866f345dcb060e6c68bb8187d21cb9f973ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA716 3396 bytes
font_04_sfnt_off0000b309.bin
0d34e375d8902d3efa285fd24fab142d003833d4205c7dc9a730d4d831678389		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB309 18532 bytes

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