Malicious PDF — malware analysis report

Static analysis result for SHA-256 bde41bbf334a8d7a…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 11:23:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b8510935ae5ca4c409aca6090388209a SHA-1: 177f08bb38371ee2450613b17121bd3c125825ed SHA-256: bde41bbf334a8d7a46f1454cfcf78fba3252417cd7d7413f556f1419653b119c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses a callback-phone (TOAD) lure. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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 http://netcdn.tw/app/479516143/minecraft-pe-015-0-apk-free-download-game-hack PDF link annotation
    • https://library.institutpendidikan.ac.id/repository/roblox-counterblox-money-hack-script_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-mod-version-free-download-2021_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/hack-roblox-boku_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-codes-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/earn-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-game-for-pc-free-download_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/roblox-gift-card-for-free_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/complete-this-obey-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-make-a-free-robux-website_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-hack-into-roblox-scam-bots_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/is-roblox-free-on-a-computer_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-robux-generator-no-survey-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/coin-master-hack-2021-no-human-verification_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-hack-roblox-accounts-on-phone_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/app-store-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/easy-hacks-how-to-get-robux-without-buying_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/how-to-stop-being-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.institutpendidikan.ac.id/repository/girl-roblox-avatar_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
font_00_sfnt_off00003226.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3226 21556 bytes
SHA-256: bf0b7115ef1f9f6289635101141263368e7ef6576202ab3a733368f82bca6283
font_01_sfnt_off0000618c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x618C 19488 bytes
SHA-256: 5fbcc03ade207b067edfd8a0e3d4a08d604425caf55cf27b07311d1a51fe3a21

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