Malicious PDF — malware analysis report

Static analysis result for SHA-256 8488a15939444a23…

MALICIOUS

PDF

40.6 KB Created: 2021-04-25 15:55:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 226ae60cd0f9679b60fc5f981d3c1774 SHA-1: b35bb59ef02e3f832413126f913cf7aec6afd82e SHA-256: 8488a15939444a2360758ae400c0faaac4e2bc024dddf549cfe0bbe16d1d9813
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9941

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/get-admin-in-any-roblox-game-hack-game-hack PDF link annotation
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/hacks-para-dungeon-quest-roblox-2021.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/admib-free-roblox.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/how-to-get-free-robux-april-2021.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/free-roblox-accounts-with-robux-december-2021.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/roblox-hacking-simulator-codes.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/je-cheat-dans-roblox-4-000-000-millions-de-robux.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/roblox-online-game-free-play.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/roblox-free-builders-club-membership.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/gratis-robux-hack.pdfIn PDF document text
    • https://www.andhrarealty.in/uploaded_files/userfiles/files/how-to-get-shirts-on-roblox-for-free-no-bc.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_off00004165.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4165 25216 bytes
SHA-256: 1a357bb3ce89b181329fbec764047ee2f99f259ba88e42e881ec1a70ccaaa0f0
font_01_sfnt_off00007aab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AAB 19020 bytes
SHA-256: d6421292752cb3c9a9fca2eb6452b44ab8c513662eb1e8be9672cd540a03174c

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