Malicious PDF — malware analysis report

Static analysis result for SHA-256 27bb807e6df45498…

MALICIOUS

PDF

34.8 KB Created: 2021-07-04 17:07:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 878d7bd1b5c7fd3fe91c04dc4f1b7406 SHA-1: e45957fc4f2e981fa0e6875f3ef406074c6ae23e SHA-256: 27bb807e6df45498c6f908ed96e0e79adf6b5c16cdd2509bad216f5469cb7186
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a lure for 'free game hacks' and directs users to external URLs. The ML classifier and specific heuristics strongly indicate malicious intent, likely to redirect users to a site that hosts malware or attempts further social engineering. No scripts were extracted, but the embedded URLs and document content point to a phishing or scam attempt.

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 http://netcdn.tw/app/431946152/free-roblox-accounts-with-robux-game-hack PDF link annotation
    • http://opac.kolejkrim.edu.my/repository/javascript-hack-robux_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-robux-obbys-that-work_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/roblox-prison-life-how-to-kill-all-hack_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/roblox-neon-district-hacking-how-to_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/roblox-how-to-get-free-items-in-catalog-2021_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-roblox-gift-card-codes-live-now_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/coin-master-hack-spins-android_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/descargar-programa-para-hackear-roblox_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-shirt-creator-roblox_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/roblox-hack-redboy_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/roblox-minion-shirt-free_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-codes-for-roblox-robux_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-robux-site_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/free-roblox-2021-accounts_GM431946152.pdfIn PDF document text
    • http://opac.kolejkrim.edu.my/repository/coin-master-daily-gift-free-spins-and-coins_GM406889139.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
font_00_sfnt_off0000306a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x306A 22356 bytes
SHA-256: e2ad6ff70f697d12effbc083405698960be335f93f7a7602f955e78dfd6a69a2
font_01_sfnt_off000061ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61ED 19376 bytes
SHA-256: f0162913020963e5353758c8abfc28ea25b7e1d49227c6af753a68a32515d33f

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