Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3718fea6ebdfc9e…

MALICIOUS

PDF

35.7 KB Created: 2021-06-22 02:59:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 8ae683f058c70c635dfa3d83630efb10 SHA-1: a9c9592ed7f2b29d2aafee1c41ab6a326fab0ff1 SHA-256: d3718fea6ebdfc9e8a9a9e46dc5f6a257b12a149d81f1ce7427872075088de59
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free Robux' and game hacks, directing users to a suspicious URL. The ML classifier strongly indicates maliciousness, and the presence of external URIs and a download button lure reinforces this. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to a malicious site for potential malware download or credential harvesting.

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/how-to-get-free-robux-2021-youtube-game-hack PDF link annotation
    • https://www.multilandtours.com/assets/ckfinder/userfiles/files/cyber-roblox-hack_GM431946152.pdfIn PDF document text
    • https://www.multilandtours.com/assets/ckfinder/userfiles/files/best-free-robux-sites_GM431946152.pdfIn PDF document text
    • https://www.multilandtours.com/assets/ckfinder/userfiles/files/roblox-robux_GM431946152.pdfIn PDF document text
    • https://www.multilandtours.com/assets/ckfinder/userfiles/files/how-to-log-out-of-coin-master_GM406889139.pdfIn PDF document text
    • https://www.multilandtours.com/assets/ckfinder/userfiles/files/roblox-com-hack_GM431946152.pdfIn PDF document text
    • https://www.multilandtours.com/assets/ckfinder/userfiles/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.multilandtours.com/assets/ckfinder/userfiles/files/coin-master-freebies-2021_GM406889139.pdfIn PDF document text
    • https://www.multilandtours.com/assets/ckfinder/userfiles/files/roblox-my-account-got-hacked_GM431946152.pdfIn PDF document text
    • https://www.multilandtours.com/assets/ckfinder/userfiles/files/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • https://www.multilandtours.com/assets/ckfinder/userfiles/files/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • https://www.multilandtours.com/assets/ckfinder/userfiles/files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.multilandtours.com/assets/ckfinder/userfiles/files/what-are-points-for-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.multilandtours.com/assets/ckfinder/userfiles/files/robux-matchcomfree-robux_GM431946152.pdfIn PDF document text
    • https://www.multilandtours.com/assets/ckfinder/userfiles/files/free-roblox-bear-mask_GM431946152.pdfIn PDF document text
    • https://www.multilandtours.com/assets/ckfinder/userfiles/files/what-do-points-do-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.multilandtours.com/assets/ckfinder/userfiles/files/coin-master-apk_GM406889139.pdfIn PDF document text
    • https://www.multilandtours.com/assets/ckfinder/userfiles/files/free-spins-on-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.multilandtours.com/assets/ckfinder/userfiles/files/how-to-change-your-roblox-username-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.multilandtours.com/assets/ckfinder/userfiles/files/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.multilandtours.com/assets/ckfinder/userfiles/files/free-godzilla-stuff-roblox_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_off00003279.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3279 22556 bytes
SHA-256: 4acec2921a19ea2c263103d92318f52d08d42e495c0800ecf02f5fb8496a2490
font_01_sfnt_off000064cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64CB 19548 bytes
SHA-256: a061223f0ce87793e12c0a694a931488c6650e3c60682b541870f0202f3cb072