Malicious PDF — malware analysis report

Static analysis result for SHA-256 1f1f33f66c2a6914…

MALICIOUS

PDF

44.8 KB Created: 2021-05-11 13:02:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: bb5468c0a673b2fde6a950ac59dc7e0f SHA-1: 01a949ea5bc3b710950fceffbdad02a21fe977cb SHA-256: 1f1f33f66c2a69141b33e632b56e6ec69d65d7c7b379c6fe56f292a2ab720644
142 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are presented as a link farm for game cheats and hacks, suggesting a lure to trick users into downloading potentially malicious content. The presence of a fake CAPTCHA or human verification prompt further supports this malicious intent. The document's content and structure strongly indicate a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

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/coin-master-hack-tool-2021-game-hack
    • http://lib.pps.uin-suka.ac.id/repository/coin-master-free-spins-2021-apk_GM406889139.pdf
    • http://lib.pps.uin-suka.ac.id/repository/daily-free-spin-and-coin_GM406889139.pdf
    • http://lib.pps.uin-suka.ac.id/repository/free-coin-master-links_GM406889139.pdf
    • http://lib.pps.uin-suka.ac.id/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdf
    • http://lib.pps.uin-suka.ac.id/repository/coin-master-daily-free-spin-app_GM406889139.pdf
    • http://lib.pps.uin-suka.ac.id/repository/coinmasterfree_GM406889139.pdf
    • http://lib.pps.uin-suka.ac.id/repository/how-do-we-get-free-robux_GM431946152.pdf
    • http://lib.pps.uin-suka.ac.id/repository/free-robux-no-human-verification-or-survey-or-download-2021_GM431946152.pdf
    • http://lib.pps.uin-suka.ac.id/repository/robux-free-gift-card-org-hack_GM431946152.pdf
    • http://lib.pps.uin-suka.ac.id/repository/coin-master-daily-free-cards_GM406889139.pdf
    • http://lib.pps.uin-suka.ac.id/repository/minecraft-pe-hacks-ios_GM479516143.pdf
    • http://lib.pps.uin-suka.ac.id/repository/how-to-earn-free-spin-in-coin-master_GM406889139.pdf
    • http://lib.pps.uin-suka.ac.id/repository/minecraft-wurst-client_GM479516143.pdf
    • http://lib.pps.uin-suka.ac.id/repository/free-spins-for-coin-master-app_GM406889139.pdf
    • http://lib.pps.uin-suka.ac.id/repository/coinmaster-rewards_GM406889139.pdf
    • http://lib.pps.uin-suka.ac.id/repository/300-free-spins-coin-master_GM406889139.pdf
    • http://lib.pps.uin-suka.ac.id/repository/minecraft-for-ps3-free_GM479516143.pdf
    • http://lib.pps.uin-suka.ac.id/repository/free-spin-links-coin-master-2021_GM406889139.pdf
    • http://lib.pps.uin-suka.ac.id/repository/how-to-download-minecraft-for-free_GM479516143.pdf
    • http://lib.pps.uin-suka.ac.id/repository/coin-master-free-spins-16-04-19_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000048ec.bin
67750207f7cfd3e87a50124fe573c8864f98203d69358bf918d1bd7968c6089e		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48EC 25048 bytes
font_01_sfnt_off0000817f.bin
8c2546387700f45186c395d475006178ee984eabbc175bcf1ee6eb58ba8b57aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x817F 3204 bytes
font_02_sfnt_off00008c83.bin
811befa785f1ceb1181632f77b53e437429424eef4610f298aaee61bf5104641		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C83 18192 bytes

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