Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d0bf0b1f23c7365…

MALICIOUS

PDF

44.3 KB Created: 2021-06-04 00:16:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1be449045ef22918671766335080ff67 SHA-1: 643dd72113a5c93c6f392af67ef5acedeb25a1e0 SHA-256: 9d0bf0b1f23c736502461a44b25d1429bcfa3e18c4aef2f2f17bcedb84570c47
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. 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 0.9865

Heuristics 4

  • 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.
  • 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/479516143/is-minecraft-education-edition-free-game-hack PDF link annotation
    • http://www.elibrary.perludem.org/repository/robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/links-to-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-free-spin-redeem-code_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/minecraft-for-ps3-free_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/real-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-downloads-for-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/coin-master-free-spin-download_GM406889139.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/how-to-get-free-robux-without-surveys_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-spin-coin-master-hacktoman_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/coin-master-free-spins-2-5-2021_GM406889139.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/javascript-free-robux_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org//repository/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/free-minecraft-windows-10-account_GM479516143.pdfIn PDF document text
    • http://elibrary.perludem.org/repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/how-to-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://www.elibrary.perludem.org/repository/free-online-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://playhack.in/minecraftIn 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_004_off00005112.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5112 25856 bytes
SHA-256: 04feb612fa79cc63b3b33dba723119a9563952cc6d017dc76f9fcc4a1e63b526
font_01_sfnt_off00008b98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B98 18024 bytes
SHA-256: 860599eb2378c11ce9f069b8b1214934614c40beead093e3b25ec1c42f286d72

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