Malicious PDF — malware analysis report

Static analysis result for SHA-256 9eac448ec03a470f…

MALICIOUS

PDF

36.2 KB Created: 2021-05-13 17:38:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 9abaac5bfdb938dd4d3f9e2e0971ffec SHA-1: ed37aee1fcc778c91105f526979c33caa80bad86 SHA-256: 9eac448ec03a470f86ff8fa874dcf2ad3d6236558bbb74c847dd4445eb924060
112 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious. It uses a seed-phrase/secret-recovery lure. 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 clean score 0.0302

Heuristics 5

  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • 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/how-to-get-free-roebucks-in-roblox-game-hack PDF link annotation
    • 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_off000035ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35AE 23704 bytes
SHA-256: 2d65f649060d1833bf5869f416ec11bfda843ca600f64188abe08ed2aca0dbe2
font_01_sfnt_off00006b7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B7B 18524 bytes
SHA-256: 6a418ba74ae5328d563bd5a35238a9b9c08fdc9000a9cbda284a157467e29bc0

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