Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c3b62c566f3d688…

MALICIOUS

PDF

35.7 KB Created: 2021-05-23 21:47:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 8f1b047d960127bc822bf4df4661f53a SHA-1: 857813badef009667cb94b0b94e5816729eb4fc2 SHA-256: 8c3b62c566f3d688f49a83292190ea6aadd149ae6fb6abb1472f7a04f5c00b11
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-severity heuristic firing for a game hack redirect lure, pointing to a malicious URL. The document body also contains the same URL and a call-to-action phrase, reinforcing the phishing attempt. The embedded URLs are likely used to host further malicious content or redirect to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/406889139/coin-master-free-spins-and-coins-game-hack PDF link annotation
    • http://www.eptaviation.com/images/coin-master-app_GM406889139.pdfIn PDF document text
    • http://www.eptaviation.com/images/freer-pro-tiktok_GM835599320.pdfIn PDF document text
    • http://www.eptaviation.com/images/coin-master-free-spins-and-coins-daily_GM406889139.pdfIn PDF document text
    • http://www.eptaviation.com/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.eptaviation.com/images/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000032ed.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32ED 24928 bytes
SHA-256: 2f96469d009fc4f37cc4bb8af59c27721f2ee87b43a748a7e79e4b7ab5d1fd41
font_01_sfnt_off00006aac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AAC 18060 bytes
SHA-256: 7f8980b6f3213b204c7b050e62c653166806b65682437d624869b2fc7a4cb6a7

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