Malicious PDF — malware analysis report

Static analysis result for SHA-256 5edadc6a0d847be8…

MALICIOUS

PDF

41.9 KB Created: 2021-05-12 05:08:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 46817ac1002aa130dd0325c384c90a03 SHA-1: 03170be7d25c1b448d8cc0f4b1dbb94bf479e02c SHA-256: 5edadc6a0d847be8a0051086070a5ba64023632ee6ac21493aa1ef21ff3e2393
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure for a 'game hack' and directs the user to an external URL. The document body and heuristics indicate a password-protected archive or a direct download lure, suggesting the intent is to trick the user into downloading a malicious file. No scripts were extracted, but the PDF structure and embedded URI point to a malicious download or redirection attempt.

Machine Learning

  • Nyx PDF Classifier clean score 0.0125

Heuristics 6

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/how-to-hack-roblox-passwords-game-hack PDF link annotation
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000035f7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35F7 27172 bytes
SHA-256: 6e7a08d70233b8c0477468192842b6634bc85453c6d4cdec84eab082f7489a2e
font_01_sfnt_off00007468.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7468 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off0000810f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x810F 18672 bytes
SHA-256: bdba0893d178c93f7db8dfb8e75fc125deebdc91658f3b2576607bd83519404f

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