Malicious PDF — malware analysis report

Static analysis result for SHA-256 3baade6c8ebee3dc…

MALICIOUS

PDF

40.4 KB Created: 2021-04-23 19:30:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 13c2f0afbad92cb0678ad25bc2b071eb SHA-1: 7933c80dd0b276486dccabcfa5ef1355c9054d6f SHA-256: 3baade6c8ebee3dc2ffe1fba74cf5d4768e6a91d08bc505561d80b849a58f9fc
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://netsecure.top/app/431946152/roblox-jailbreak-money-hack-2021-game-hack PDF link annotation
    • http://blueduna.com/images/free-roblox-no-verification.pdfIn PDF document text
    • http://blueduna.com/images/guest-roblox-face-hack.pdfIn PDF document text
    • http://blueduna.com/images/free-admin-panel-roblox-pastebin.pdfIn PDF document text
    • http://blueduna.com/images/roblox-redwood-prison-hacks.pdfIn PDF document text
    • http://blueduna.com/images/will-roblox-be-for-free-when-it-come-to-ps4.pdfIn PDF document text
    • http://blueduna.com/images/mega-nz-roblox-hack.pdfIn PDF document text
    • http://blueduna.com/images/free-robux-hck.pdfIn PDF document text
    • http://blueduna.com/images/obby-gives-you-free-robux-no-password-required-2021-roblox.pdfIn PDF document text
    • http://blueduna.com/images/hack-de-roblox-counter-blox.pdfIn PDF document text
    • http://blueduna.com/images/free-robux-xyz.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_off00003f00.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3F00 25148 bytes
SHA-256: 99d028fe6e8767608b71d88cfca741721f9603d8ea3cbdc098d4e97c1180e37f
font_01_sfnt_off00007917.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7917 19244 bytes
SHA-256: 7231245a0d29a459ae2987375e036450a6dcc097c16cd245166a12a1a1ef4ff2

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