Malicious PDF — malware analysis report

Static analysis result for SHA-256 a618ef261ef27829…

MALICIOUS

PDF

45.1 KB Created: 2021-05-10 15:32:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 65fc61048ca880e0ae866209ff005b5b SHA-1: 103f3b30ab380470eb8952e2fa30af1e9553c52c SHA-256: a618ef261ef27829047eb23131566f596ffb4b6a9528daef3b9f86abaee1f373
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic firing for a 'free generator / game hack' lure, directing users to the URL https://netcdn.xyz/app/431946152/free-robux-codes-2021-game-hack. The document body also contains this URL and other similar URLs pointing to game-related cheats, indicating a social engineering attempt to trick users into visiting malicious sites. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest a potential for further malicious actions, possibly involving embedded JavaScript.

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 https://netcdn.xyz/app/431946152/free-robux-codes-2021-game-hack PDF link annotation
    • http://perpus.i2s-learning.com//repository/free-robux-codes-generator_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-roblox-shirt-templates-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-free-spins-link-blogspot-today_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-free-spin-link-twitter_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-games-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-giveaway_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-generator-for-roblox-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-hack-tool-access-online-generator_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-free-spins-daily-1-ga_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-hack-coin-master-spin-in-hindi_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/safe-hack-for-coin-master-android_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-free-clothes-girl_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-coins-free_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-free-robux-as-a-kid_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
stream_003_off00004af9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AF9 30264 bytes
SHA-256: e1caacf286596058d80d8112334a7e0fc8ab68949943da0a861fb3a252684124
font_01_sfnt_off00008ce9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CE9 18588 bytes
SHA-256: 0c0011b59677f21f59199ad7d2a82948105ed154610022cedcbab6f052c91d55

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