Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee5765cbbbd67cce…

MALICIOUS

PDF

37.0 KB Created: 2021-05-11 09:31:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: e3e84ddb0c79100b96b321858140a295 SHA-1: 3d652f470d03c257855dfedc41f10107f814b7f7 SHA-256: ee5765cbbbd67ccebee384618ba88d33693820bc164714550712d091256d9c8e
130 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for 'free spins on Coin Master' and a 'generator', directing users to a known malicious redirector URL. The document body also contains a call-to-action phrase 'CLICK HERE TO ACCESS COIN MASTER GENERATOR'. This indicates a phishing or scam attempt designed to lead users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier clean score 0.0313

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/406889139/get-2021-free-spins-on-coin-master-game-hack In 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_off00003382.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3382 26504 bytes
SHA-256: 6b588a348bf4a74f2139a0c132a4efe2e8cb3590f8bbf8d8b182be49425acc0d
font_01_sfnt_off00006f72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F72 18288 bytes
SHA-256: 882c1e08e977239ecedb915e199b33d6770e962ab42e0389920a883bc9e88219