Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a5c61c2adcefba5…

MALICIOUS

PDF

36.4 KB Created: 2021-06-19 04:17:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: b36d9a8729c8a68f7221242553a811e0 SHA-1: dbccf77d3fd0f5b93a87d469db67b53eaa9ab7ea SHA-256: 1a5c61c2adcefba5bede536fc6b8f38b992060a4bad86f04376e5fae5aa73d56
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs and a heuristic firing for a 'game hack' redirect lure, strongly suggesting a social engineering attack. The document body text explicitly mentions 'Roblox Hack Generator' and links to URLs promising hacks and free currency, indicating a phishing or malware distribution attempt. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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.co/app/431946152/roblox-hack-generator-no-human-verification-game-hack PDF link annotation
    • http://lib.stimykpn.ac.id//repository/easy-points-gg_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/sites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-hack-app-android_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-email-rewards_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-jailbreak-account-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-avatar-items-roblox_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/how-to-earn-free-stars-on-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/coin-master-35-2-hack_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-play-as-guest-free-unblocked_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id//repository/cheats-coin-master-free-spins-and-news_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/como-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/hack-coin-master-8-ball-pool_GM406889139.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/roblox-jailbreak-how-to-get-vip-for-free_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • http://lib.stimykpn.ac.id/repository/free-roblox-accounts-2021-with-pin_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_off000034e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34E0 22936 bytes
SHA-256: d5c8fb027e8d30ce199793026039dce8c41c15ee88f534ace90e38303c6cf313
font_01_sfnt_off0000686a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x686A 19412 bytes
SHA-256: eaeb5516ab817cb27f811a04244d59a42581792faa7435816a96128c50ce3cf8

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