Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cd8dd10bda6852e…

MALICIOUS

PDF

35.6 KB Created: 2021-05-22 16:50:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: dda2b19394e7ffcc92002e6dcd46bddd SHA-1: 5a27a99296d1ad1a09ab4ea7907d1921ee0551c7 SHA-256: 9cd8dd10bda6852e16a5f023c58e3b096b4b11405acf75c0b75e97bb3af52408
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 0.9648

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-spin-and-coins-links-game-hack PDF link annotation
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/minecraft-hacker-mask_GM479516143.pdfIn PDF document text
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/how-to-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/tiktok-free-trial-likes_GM835599320.pdfIn PDF document text
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://www.lorengntt.com/new/public/ckfinder/userfiles/files/roblox-free-items_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_off000032fe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32FE 24084 bytes
SHA-256: 042610ece44cd40efa1f48267c9f1b4af1718525a440797d476555b2afd9149c
font_01_sfnt_off000069e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69E5 18228 bytes
SHA-256: ab1c4cdc214a6baf81a15e2f62a40ea9cfbbbf407f0f3dd1c7564e467cf0dae2

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