Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fe1e6fec596d589…

MALICIOUS

PDF

46.0 KB Created: 2021-05-19 07:52:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: e3ede25102ae90f9c58503cc4e6b7f3d SHA-1: 0afee25d65bbc41a3fb5487a64c9824a6216ab6a SHA-256: 2fe1e6fec596d5897d4aa17c836ab0019b221bf5d158c850fd68fd0ab8edf5be
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The document exhibits characteristics of a social engineering lure, specifically a browser extension or update installation scam, indicated by the 'SE_BROWSER_INSTALL_LURE' heuristic. It also contains embedded URLs that likely lead to malicious content or further stages of an attack. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

Heuristics 4

  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/835599320/tiktok-free-college-books-game-hack PDF link annotation
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/100-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/roblox-free-body_GM431946152.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/original-roblox_GM431946152.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/real-working-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/coin-master-free-stars_GM406889139.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/how-many-villages-are-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/coin-master-3533-android-hack_GM406889139.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/coin-master-hack-using-lucky-patcher_GM406889139.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/download-hacked-games-coin-master_GM406889139.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/free-roblox-money_GM431946152.pdfIn PDF document text
    • https://www.elearning.massimbangkulon.sch.id/__statics/gudangsoal/files/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004902.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4902 27628 bytes
SHA-256: d4a3768137ac56430fd60322d2fedf917a2696d61c36ff7bf66a398e27075cb5
font_01_sfnt_off00008821.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8821 2892 bytes
SHA-256: 5e0712ca08337fb3b2e5736ec787a8b2ab1b9b6f3706f0b029d23afe08e6a7a6
font_02_sfnt_off00009207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9207 18036 bytes
SHA-256: 01c55d1fa18e61c256b00793408448f54f87b9634f6737358e21a832a2bd5e79

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