Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b607c623e2c7c5b…

MALICIOUS

PDF

35.2 KB Created: 2021-07-04 18:39:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 1c56ae130820b6ef34563482c3d18338 SHA-1: f387916f8d6f8b558ef0c21b9b061caf6cd7a3ca SHA-256: 4b607c623e2c7c5beeb1d6fa1a510867927620cae4e7f4d47d3b583d73b07520
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites that promise free in-game currency or hacks, a common lure for phishing or malware distribution. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates this malicious intent. While no scripts were directly extracted, the presence of embedded URLs and the nature of the lure suggest the document is designed to redirect users to malicious sites, likely for credential harvesting or further malware downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/431946152/what-games-on-roblox-give-you-free-robux-game-hack PDF link annotation
    • http://digilib.iailm.ac.id/repository/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/how-do-you-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-lua-programming-book-pdf-free_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-robux-with-cheat-engine-64_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-hack-apk-35-11_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/robux-generator-that-works_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-gear-hack-roblox-where-you-can-destroy-things_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-for-pc-free-download_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/coin-master-game-android-free-download_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-a-unicorn-in-adopt-me-roblox-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/big-paintball-roblox-immortal-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-no-test-or-dowmload_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/is-it-possible-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-cheat-trainer-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-robux-using-inspect-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/pubg-uc-deducted_GM1330123889.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/ww-roblox-come_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-outfits-roblox_GM431946152.pdfIn 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
font_00_sfnt_off000030e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E0 22240 bytes
SHA-256: 9aefb60c7dc0dc57894075d54f6f3f94166c2915dc93ad23fa24b3367d6e5113
font_01_sfnt_off0000625b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x625B 19916 bytes
SHA-256: 8b19fd13ad5b08f11d9c4597e6f2a0c04d71b28f89248dcac2f5c29d09b121fb

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