Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a0caf3358c53ea8…

MALICIOUS

PDF

43.5 KB Created: 2021-06-03 23:48:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 0015709eeab7c01574000ed90dec48fb SHA-1: 387603ce52401f0f825e0e2b33c5f99b3d249c46 SHA-256: 4a0caf3358c53ea86b81f987831c137ac04959e860b681b7ccdcf59f61f48b31
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/406889139/coin-master-free-spins-facebook-game-hack PDF link annotation
    • http://lib.icbc-indonesia.org//repository/roblox-mobile-hack_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-robux-hack-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/robux-money_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/free-robux-codes_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/aternos-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/today-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/coin-master-free-pet-food-links_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-robux-pastebin_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/robloxhacks_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/how-to-make-a-roblox-group-for-free_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/earn-robux-online_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-gift-card-online-free_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/coin-master-hack-apk-free-download_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/coin-master-pet-food-free_GM406889139.pdfIn PDF document text
    • http://lib.icbc-indonesia.org/repository/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.icbc-indonesia.org//repository/websites-for-robux_GM431946152.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5176 23980 bytes
SHA-256: d7052685d668007cc24379051a84d5cc85d166b41a8131494652bf45a97a9543
font_01_sfnt_off00008767.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8767 18212 bytes
SHA-256: a7d0484bdc545634c9b46f4dcbf794c30064c3aaaf3cdd537b213ac19f08a95c

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