Malicious PDF — malware analysis report

Static analysis result for SHA-256 e95da096dc324809…

MALICIOUS

PDF

34.8 KB Created: 2021-07-04 18:30:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 596d84ae6253299c9dda87fb63431bea SHA-1: 029667666af7d9910c72342d393837a9e94cd008 SHA-256: e95da096dc3248098bae48c9b925942f938e200d86c3124717c53d431110fd8a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to known malicious redirectors, specifically promoting 'free generators' and 'game hacks' for popular games like Robux and Coin Master. The document body and embedded links strongly suggest a phishing or scam attempt designed to trick users into visiting malicious sites. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/get-me-robux-game-hack In PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-hack-to-get-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-hoe-to-get-extra-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-background-music-for-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/robux-free-kein-online-konto_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-a-free-animation-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/clients-minecraft_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/roblox-land-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-mermaid-halo-roblox-royale-high_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-become-a-hacker-in-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/get-free-robux-pastebincom_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/roblox-robux-hack-xyz_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-website-glitch_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/kill-all-zombies-in-zombie-rush-script-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-hack-roblox-accounts-2021-october_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-generator-no-human-verification_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_off00003068.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3068 22856 bytes
SHA-256: 3af7b8fcc6c911b3db12ebba890dbf32244d121a898d40bbd5f29fc3f60f3f29
font_01_sfnt_off00006390.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6390 18852 bytes
SHA-256: c6c93ab299f4d7fb76ac29fc2ca463b0cd49dc031c6d0589ef854bd1b1cccaae

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