Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e18f71e4bd54ff5…

MALICIOUS

PDF

43.1 KB Created: 2021-05-12 03:51:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: d06e37f2a209f8e6a4928aa890a95201 SHA-1: c2c486212ad5f4a15300ed472a7ddfd2a19b6c39 SHA-256: 4e18f71e4bd54ff579951572a8045cb5e96e5b0f7e98dc72ac0c230de3f24e88
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 the document. It embeds multiple URLs, including one pointing to a 'coin-master-free-spins-and-coins-generator-game-hack', suggesting a scam or phishing attempt. The ML classifier also strongly flagged this PDF as malicious.

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/406889139/coin-master-free-spins-and-coins-generator-game-hack PDF link annotation
    • http://abdinusababellibrary.ac.id//repository/real-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/how-to-get-free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/hack-coin-master-using-pc_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/coin-master-free-spins-and-coins-haktuts_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/appsmob-info-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/coin-master-free-spins-cheat_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-magical-chest-coin-master_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/robux-sign_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-roblox-girl-clothes_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-spins-coinmaster_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/how-do-i-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://abdinusababellibrary.ac.id//repository/is-there-any-tricks-or-working-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b7a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B7A 25672 bytes
SHA-256: 2ceeed05c58e737b1f772afda84af8de9675759b29243974b7afd3ad40b46c55
font_01_sfnt_off000086f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86F2 18060 bytes
SHA-256: 5c936a158300bd644bf61cf1c4473900143af4d81ccb33b35f9f120089ba0cae

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