Malicious PDF — malware analysis report

Static analysis result for SHA-256 1248af6a381f4bd6…

MALICIOUS

PDF

49.7 KB Created: 2021-05-12 22:30:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: df540c6de5f684faa9501e76ac777da1 SHA-1: d694c3979d075067ef6a5b52bad92fdb3d3b5b83 SHA-256: 1248af6a381f4bd6e8a66065aae3ffec73993912ac560ad23c28d4fbfd0b5d29
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 0.8642

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.xyz/app/406889139/free-coin-and-spin-link-game-hack PDF link annotation
    • http://libnh.stikesnh.ac.id/repository/free-vip-server-roblox_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-hack-spins-download_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/optifine-pe_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-hack-without-verification-ios_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/gameoffice-net-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/coin-master-hack-apk-link_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-to-log-out-of-coin-master_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/earn-points-for-robux_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-to-hack-a-roblox-account-easy_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-to-hack-coin-master-with-game-guardian_GM406889139.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://libnh.stikesnh.ac.id/repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000486f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x486F 28392 bytes
SHA-256: 2a17df894e5c6e6279b88f81f4e0706398360016d08be5be5796a4dde22aa737
font_01_sfnt_off0000897b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x897B 4076 bytes
SHA-256: 72edb3297646360b86480160291aea528a7dfc74a3cb5ea38ac61dd9ec3dd6c2
font_02_sfnt_off00009740.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9740 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off0000a12f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA12F 17896 bytes
SHA-256: d4766dae7958252991ea9c600ec63f9574658937c72f1ba15e00730ea5da47af

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