Malicious PDF — malware analysis report

Static analysis result for SHA-256 828122c599164631…

MALICIOUS

PDF

50.2 KB Created: 2021-06-04 04:37:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: a20e0735a22c18a6897298dc62a01374 SHA-1: aca9b9530320b6aae8fece1f56e57ca014b7d005 SHA-256: 828122c599164631986af9697554a988816716c81262312ae1fc9da438fef93c
82 Risk Score

Malware Insights

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

The PDF document contains a fake CAPTCHA lure, designed to trick users into interacting with malicious content. It also embeds an external URI pointing to a URL that promises game-related cheats, further supporting the lure. The document's content and heuristics indicate a phishing or scam attempt, likely leading to further malware download or redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9789

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.online/app/431946152/how-to-get-never-ending-robux-no-hack-game-hack PDF link annotation
    • https://library.stikesmi.ac.id/repository/coin-master-daily-spins_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/freespincoin-masterlinkdownload_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/roblox-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/www-coinmaster_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/pokemon-go-free-7-day-streak_GM1094591345.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/minecraft-creative-mode-free_GM479516143.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/mcpe-client_GM479516143.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/coin-master-free_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/minecraft-hacked-client-download_GM479516143.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/coin-master-hack-version-download-2021_GM406889139.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/robux-only_GM431946152.pdfIn PDF document text
    • https://library.stikesmi.ac.id/repository/minecraft-cheat-client_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 6

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005103.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5103 28816 bytes
SHA-256: be278373929c3fac7b07d120706cada4327ec2dbf8b3b5dd85502e7adb0c43de
font_01_sfnt_off00009195.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9195 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00009ea6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9EA6 19212 bytes
SHA-256: 6739a53173cf890eb3f273c51503b74d490875dd4b34992e3f975b17f259bf2e

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