Malicious PDF — malware analysis report

Static analysis result for SHA-256 619554360f1331be…

MALICIOUS

PDF

39.2 KB Created: 2021-05-10 14:34:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e22a29e9fffd431190451ef3d5dcf51d SHA-1: 7c6fc41af4fe12fff7a1efc383ed4e5e7c1be232 SHA-256: 619554360f1331be4d45741485abb1da485c5fa02415f1902066926c170911c9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic indicating it links to a game hack lure. The document body and extracted URLs reinforce this, pointing to sites promising free spins, coins, or Robux. The primary malicious URL is likely https://netcdn.xyz/app/406889139/coin-master-free-spins-and-coins-link-blogspot-game-hack, which is designed to trick users into clicking through to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9566

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-link-blogspot-game-hack PDF link annotation
    • http://unionmusicaldebenidorm.com/images/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/coin-master_GM406889139.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/how-to-get-minecraft-dungeons-for-free_GM479516143.pdfIn PDF document text
    • http://unionmusicaldebenidorm.com/images/minecraft-18-9-hacked-client_GM479516143.pdfIn 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_off00003e5d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3E5D 25256 bytes
SHA-256: 5fa4a509c4f23d50b80c5560ea95d5707dfad73972a86ccb72c45731ff411a2e
font_01_sfnt_off0000762d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x762D 18808 bytes
SHA-256: 03b21e015184c6ee707266379cca5c27191cb89bc46cd5e8ba76e84d1a33d40b