Malicious PDF — malware analysis report

Static analysis result for SHA-256 87bcc80fe11f91c2…

MALICIOUS

PDF

46.6 KB Created: 2021-06-11 03:49:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 325bb05fd73f66542de3cba6123af270 SHA-1: 454735cecdbae7353078826a9cede670b9eeff0d SHA-256: 87bcc80fe11f91c2155063919a7079e34ad15d4765f1e9707a6a286e592fd5a6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks, specifically Roblox, directing users to a malicious URL. While no scripts were directly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially malicious content, likely for credential harvesting or further malware delivery. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.tw/app/431946152/roblox-ff-hack-game-hack PDF link annotation
    • http://librarystkippgribl.com/repository/robux-cheat-hack_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-hack-android-2021_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/minecraft-clipart-free_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/robux-premium_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/minecraft-story-mode-free-download_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/how-to-download-minecraft-for-free-on-windows-10_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/how-to-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/free-minecraft-videos_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/haktuts-coin-master-spins_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-firebird-card-free_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-unlimited-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/como-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/get-free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/how-to-download-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/roblox-free-stuff-list_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/free-roblox-clothes-and-hair_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_004_off000052af.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52AF 28780 bytes
SHA-256: 8c29b86ee4398f5756c6e5d482fef7a57c664ff7f6a36be2508b6833d7931f4b
font_01_sfnt_off00009384.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9384 18344 bytes
SHA-256: b92e9b55ec7114dee44c75b2f26993ed42bec8ab72b7c0f46b521afcaec1eab7

Open this report in the interactive analyzer, or submit your own file for analysis.