Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e492a0be42bf05a…

MALICIOUS

PDF

44.3 KB Created: 2021-06-03 12:45:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1b46d679fa3384500e192821ac61f3e1 SHA-1: 2ebf058b34a44cf16dbeea75da1307911ac62449 SHA-256: 4e492a0be42bf05ae0baf0176c330aa9ef453ad7b6b95f32fc54cf672845fb1c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a document body that advertises a "Coin Master Hack Game Download Mod Apk", directly linking to a suspicious URL. The presence of a "Password-protected archive handoff" heuristic suggests a common technique to bypass security scanning by encrypting the actual payload. No scripts were extracted from this sample, but the overall lure and embedded URLs indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/406889139/coin-master-hack-game-download-mod-apk-game-hack
    • http://librarystkippgribl.com//repository/tiktok-free-trial_GM835599320.pdf
    • http://librarystkippgribl.com//repository/coin-master-hacks-reddit_GM406889139.pdf
    • http://librarystkippgribl.com/repository/como-hackear-coin-master-2021_GM406889139.pdf
    • http://librarystkippgribl.com/repository/free-robux-not-fake_GM431946152.pdf
    • http://librarystkippgribl.com/repository/pubg-uc-wholesale_GM1330123889.pdf
    • http://librarystkippgribl.com/repository/free-robux-by-watching-ads_GM431946152.pdf
    • http://librarystkippgribl.com//repository/password-free-roblox-accounts_GM431946152.pdf
    • http://librarystkippgribl.com/repository/free-robux-roblox-promo-codes_GM431946152.pdf
    • http://librarystkippgribl.com/repository/como-hackear-juego-coin-master_GM406889139.pdf
    • http://librarystkippgribl.com/repository/coin-master-email-rewards-link_GM406889139.pdf
    • http://librarystkippgribl.com//repository/free-spin-link_GM406889139.pdf
    • http://librarystkippgribl.com/repository/but-link-says-free-robux_GM431946152.pdf
    • http://librarystkippgribl.com/repository/coinmaster-spins_GM406889139.pdf
    • http://librarystkippgribl.com//repository/how-to-get-minecraft-for-free-on-iphone_GM479516143.pdf
    • http://librarystkippgribl.com/repository/roblox-gang_GM431946152.pdf
    • http://librarystkippgribl.com/repository/freespinandcoinblogspot-com-2021-11-coinmasterfreespins_GM406889139.pdf
    • http://librarystkippgribl.com/repository/spin-and-coin_GM406889139.pdf
    • http://librarystkippgribl.com/repository/free-spins-and-coins-coin-master-facebook_GM406889139.pdf
    • http://librarystkippgribl.com/repository/free-minecraft-texture-packs-java_GM479516143.pdf
    • http://librarystkippgribl.com//repository/rblx-gg-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005081.bin
2eb20a22ba21935ab68512f5a95cc6c6fb0adacdac3b149268f677047a564d93		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5081 24612 bytes
font_01_sfnt_off0000893a.bin
3b2a882a3eab689f8cc2f919f0b1382fe93a3de56946d789c538445f453e6892		 pdf-font-stream PDF embedded font (sfnt) at offset 0x893A 18732 bytes

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