Malicious PDF — malware analysis report

Static analysis result for SHA-256 664898452eeb22e1…

MALICIOUS

PDF

48.6 KB Created: 2021-06-08 18:32:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 2c745fcbc3b20fd51cb08c025dc60f05 SHA-1: cbfd582b722556246ff7dba75cc26679c371122c SHA-256: 664898452eeb22e19cc64810da5493bc8ef002a99c8307180106018b98daee15
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains a high-confidence heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The document body, though partially corrupted, includes text related to 'cheats for Roblox Jailbreak' and the same suspicious URL, reinforcing the lure. The presence of embedded URLs and the ML classifier's high confidence score suggest a malicious intent to redirect users to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/cheats-for-roblox-jailbreak-money-game-hack PDF link annotation
    • http://library.persadabunda.ac.id/repository/minecraft-windows-10-free-trial_GM479516143.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-spins-coin-master-november-2021_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-free-spins-fb_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/roblox-catalog-free_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-fun-free-spins_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-spins-coin-master-2021-glitch_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-boombox-roblox-gear_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-offline-hack_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/free-robux-come_GM431946152.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/daily-spin_GM406889139.pdfIn PDF document text
    • http://library.persadabunda.ac.id/repository/roblox-rewards-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005312.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5312 25564 bytes
SHA-256: 9a6d8bad74718b4f115217f78eda61a24e6648421ef53bbe4a603cf241d958d0
font_01_sfnt_off00008ea5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8EA5 2824 bytes
SHA-256: 94c1b019735d7e491765340abe50b2897410e2ec65ecf141c08bd9f2220897c4
font_02_sfnt_off00009854.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9854 19276 bytes
SHA-256: eb62ada22c19f2c5045d76b192989885cdc4afa68c9e1e846973defd3998a994

Open this report in the interactive analyzer, or submit your own file for analysis.