Malicious PDF — malware analysis report

Static analysis result for SHA-256 91e3e93d1bb4c17c…

MALICIOUS

PDF

34.1 KB Created: 2021-06-29 22:14:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4e811318b9a3ddd597962925f00423e0 SHA-1: 9e232348b138e7da451c02693befda02361a076b SHA-256: 91e3e93d1bb4c17c9a7455794bf43d4673179c3f9a3fae96bc551d70745b4062
82 Risk Score

Malware Insights

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

This PDF document employs a common lure of 'free game hacks' to entice users into clicking a malicious URL. The primary URL, http://netcdn.co/app/431946152/exploit-free-roblox-not-win-rar-game-hack, is identified as a redirector likely leading to a second-stage payload or phishing page. The ML classifier strongly supports the malicious nature of this PDF.

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.co/app/431946152/exploit-free-roblox-not-win-rar-game-hack PDF link annotation
    • http://perpus.stmik-im.ac.id/repository/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/codes-roblox-hack-the-bank_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/rxfast-ml-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-pastebin-no-wait-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-real-feb-24-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/robux-gift-card-free_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/robux-hack-pro-tv_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-roblox-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-to-speed-hack-in-roblox-mobile_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-super-jump-hack-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/hack-coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/pokemon-go-free-friend-codes_GM1094591345.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/all-free-stuff-in-roblox-catalog_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-online-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/meepcity-hacks-for-music-with-out-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/but-link-says-free-robux-walter_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/40-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-free-spin-and-coins-links_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_off00002f50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F50 21928 bytes
SHA-256: 48e10c72f90a3264a66d5b8a17ff6fba430c9787b2d896fa212e51355aa8cb00
font_01_sfnt_off00005fae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FAE 19248 bytes
SHA-256: bad4102233f8479dfa5a7410aafcd0e54fb9f570551d7c33265b7a7ede6e8740

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