Malicious PDF — malware analysis report

Static analysis result for SHA-256 488302a95559709c…

MALICIOUS

PDF

33.0 KB Created: 2021-07-05 03:18:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 746d487cf7681c7c4824fc8aab69dc83 SHA-1: 5298425cfdd3689871df4740aed84dbb88d61db8 SHA-256: 488302a95559709c7b8024265c4b973182b7a3c7dad6b02a8f8d70e465869cf5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to websites offering game hacks and free in-game currency, such as Robux. The primary link, http://netcdn.tw/app/431946152/roblox-rewards-robux-game-hack, is flagged as a lure for game hacks. This suggests the document's purpose is to redirect users to potentially malicious sites for credential harvesting or malware distribution. No scripts were extracted, but the document structure and embedded URLs strongly indicate a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/roblox-rewards-robux-game-hack PDF link annotation
    • http://www.pspmrsmkkb.com/webopac/repository/free-minecraft-gift-card_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/roblox-most-hacked-games_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-roblox-accessories_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/coin-master-34-5-hack_GM406889139.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/pokemon-go-free-hack-ios_GM1094591345.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-roblox-redeem-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-minecraft-hosting_GM479516143.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/hacking-my-friends-roblox-account-ant_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/are-there-and-free-safe-roblox-exploits-v3rmillion_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/how-to-get-free-robux-in-ios-ipad_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/roblox-robux-hack-really-works_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/how-to-become-a-admin-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/hack-booga-roblox_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-download-roblox-infinite-jump-real_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-robux-generator-unlimited-robux-and-tix_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/free-roblox-jump-exploiut_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.pspmrsmkkb.com/webopac/repository/how-to-use-a-loadstring-hub-roblox-hack_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_off00002aec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AEC 22216 bytes
SHA-256: 6d06b3e58dab8217d72cc64b388c92952cac25957658cf2e09ea1724207b6fea
font_01_sfnt_off00005c24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C24 18964 bytes
SHA-256: 322cb015d8416946c2b1976d39301ec3b41f89cc5c69f423f24bf617dba1afa4

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