Malicious PDF — malware analysis report

Static analysis result for SHA-256 2259a26632b9d2fd…

MALICIOUS

PDF

44.0 KB Created: 2021-05-11 17:02:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 48e0859f978f761d0a87e7c3d5882496 SHA-1: d8d3cb49bd9e3cbf74fee99d991620304c39fdf8 SHA-256: 2259a26632b9d2fd0704de8cf6230521cd0024160e0aec2bb891aef541836b0f
82 Risk Score

Malware Insights

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

The document presents a fake CAPTCHA lure to trick the user into interacting with a malicious link, likely to download a secondary payload or redirect to a scam. The embedded URL and numerous other similar URLs found within the document point to a common theme of exploiting users' interest in free in-game currency or items. No scripts were extracted, limiting further analysis of the execution chain.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

Heuristics 4

  • 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-by-playing-games-game-hack PDF link annotation
    • http://lib.akper17.ac.id/repository/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/actual-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/roblox-hacks-2021_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-free-spins-link-fb_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-real-hack_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/how-to-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-free-coins-and-spins-link-today_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-hacks-for-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/apps-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/free-spins-coin-master-without-completing-offers_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-apk-hack-mod-download_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/roblox-system_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c11.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C11 25136 bytes
SHA-256: 5f1af8c61edd2351d7faca58d8e242215d1fa456beec5af310fd83de099ffeb4
font_01_sfnt_off000085f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85F9 19588 bytes
SHA-256: 4959be52701d88ef79c98b835575558ad206ad5c377459138293e90af74f97c3

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