PDF static analysis report

Static analysis result for SHA-256 cd40fa5d56e3ab76…

SUSPICIOUS

PDF

29.0 KB Created: 2021-07-06 13:04:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: f0e59c58951588feb2e9ffdb7401eecc SHA-1: 110d06c0c5a8b35c576e18cb9adbcbb6cbc4202d SHA-256: cd40fa5d56e3ab76149af929aa722e2a73a8d0b2d0a831deee9e6198e5d6c46a
52 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-severity heuristic indicating it links to a game hack lure. The document body and extracted URLs reinforce this, pointing to a "Coin Master Free Coins Hack" and a generator. While no scripts were extracted, the presence of external links suggests an attempt to redirect the user to a malicious site, likely for malware download or credential harvesting.

Machine Learning

  • Nyx PDF Classifier clean score 0.0337

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 http://netcdn.tw/app/406889139/coin-master-free-coins-hack-game-hack PDF link annotation
    • https://www.urcouponsdeal.com/2019/03/coin-master-In 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_001_off00001c91.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x1C91 23080 bytes
SHA-256: c3ed35fa2437c84898156b1d42a4a728ac02767482c20f86aa7c79efab5820d9
font_01_sfnt_off0000506d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x506D 18168 bytes
SHA-256: f6a958b5ee3bd5b31fa7bb34e70f4f188eadbb3e5a663de667095cc8c499d1ed

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