Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd755427ba0f5b27…

MALICIOUS

PDF

41.6 KB Created: 2021-05-20 17:57:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0dc6b0fcf81637884e63ea59c15137fa SHA-1: 920f6afe216b1ee5039fdfcf29fd7f3511e72fe0 SHA-256: cd755427ba0f5b274174361baa68d4177443e3f6ffffd9c8ffdd2385592a5135
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. 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 malicious score 0.7527

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/431946152/how-to-get-free-robux-without-downloading-apps-game-hack PDF link annotation
    • http://www.exikom.com.ua/images/free-spin-coin-master-app-download_GM406889139.pdfIn PDF document text
    • http://www.exikom.com.ua/images/free-robux-only-1-step_GM431946152.pdfIn PDF document text
    • http://www.exikom.com.ua/images/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://www.exikom.com.ua/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.exikom.com.ua/images/coin-master-free-spins-2021-ios_GM406889139.pdfIn PDF document text
    • https://discordIn 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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003499.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3499 27780 bytes
SHA-256: ff1c5c84bbdedc7829096baf0fc0e771d237bcbbac764b951b966d9cf1310b10
font_01_sfnt_off00007264.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7264 2908 bytes
SHA-256: e28d2c57f35643e2026f86c34ac3bb63cba74be3f6c066e81aba6d285e5a121b
font_02_sfnt_off00007c5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C5D 19876 bytes
SHA-256: 8da7f6a753952615a486eb6a0fdfe7794e2ad045808eb185ac8c0a25e8999c49

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