Malicious PDF — malware analysis report

Static analysis result for SHA-256 8384c81db550ccaa…

MALICIOUS

PDF

34.4 KB Created: 2021-06-26 01:03:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 39f77678b052e9ee9e061de2afe1d9fe SHA-1: ab6af707f8cf8e6dec9448e953996e32bfeb9cd6 SHA-256: 8384c81db550ccaab44b53286a8c74922cb1123b2eff19d7afe235f72e2cec57
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure related to 'Roblox Hack Free Robux Apk' to entice users to click on embedded links. The primary link, http://netcdn.co/app/431946152/roblox-hack-free-robux-apk-game-hack, likely leads to the download of a malicious application or further redirects to a site hosting malware. The ML classifier strongly flagged this PDF as malicious, supporting the observed lure.

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/roblox-hack-free-robux-apk-game-hack PDF link annotation
    • https://lib.bunghatta.ac.id/app/repository/camisetas-de-roblox-de-hacker_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/cone-master_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/hack-coin-master-site-rssingcom_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/freer-pro-tiktok-fans_GM835599320.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-shirt-template-maker-free-shipping_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-hacks-scythe-script_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-r-in-roblox-free_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-do-you-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-spin-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-hacks-2021_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-cheats-free_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/ways-to-get-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-hack-on-laptop_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-free-robux-using-promo-codes_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-you-get-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/best-free-exploits-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-free-headphones-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/ghost-walk-hack-roblox_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_off00002e52.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E52 22820 bytes
SHA-256: 502d52a81013ce2daf0b764ed510b7682ab82a414145f9e7d72832c8ed73c1db
font_01_sfnt_off00006160.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6160 19136 bytes
SHA-256: 3f6bda2a60b58db944c910a8ac6d4f9c289373a7a2752689714c1855c1e68852

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