Malicious PDF — malware analysis report

Static analysis result for SHA-256 33e57b9aa92dbc47…

MALICIOUS

PDF

45.5 KB Created: 2021-05-11 04:02:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 07f5552dd1f19d4d81a38239e3168140 SHA-1: 227d6cdb477f5cbb8c312ad04eee3dc08978cde6 SHA-256: 33e57b9aa92dbc471f79be7877ada576ecdf41010cc8dff2fefa8ee7bde0a583
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 0.9980

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/479516143/noob-vs-pro-vs-hacker-vs-god-minecraft-game-hack PDF link annotation
    • http://librarystkippgribl.com//repository/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/code-free-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-free-spins-link-2021-iphone_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/hack-avatar_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/113-hacked-client_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/free-roblox-accounts-with-robux-that-work-not-banned_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/bloxpage-free-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-free-rare-cards_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coinmaster-spins_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-executor-roblox_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/free-spins-for-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-daily-free-spins_GM406889139.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_off00004c3b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C3B 29392 bytes
SHA-256: 9eafb9a7618c593ae012337d894d2cfd8fab45131316f9be7045891282489d55
font_01_sfnt_off00008f3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F3A 18500 bytes
SHA-256: b5eb0aae73330acae6586af23efb0811f8df12c769def1792db1ea9c848aef1b

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