Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb11d57d59b913dc…

MALICIOUS

PDF

34.7 KB Created: 2021-06-20 11:29:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 82159efd9690fa93b319114172860e14 SHA-1: 65843b5274d7676e54f133725c6e62a9b0f51dee SHA-256: bb11d57d59b913dcb19576058f2f73f711e462f9763a517f80f9b7b9b8704f4d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a lure related to 'free Robux' and game hacks, indicating a phishing or scam attempt. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' confirms this, pointing to a redirector URL. The ML classifier also flagged the PDF as malicious with high confidence. No scripts were extracted, but the document's content and embedded links strongly suggest a social engineering attack to redirect users to a malicious site.

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/free-robux-scams-prank-game-hack PDF link annotation
    • http://pustaka.fk.unand.ac.id/repository/roblox-cs-go-hack-nasl-yaplr_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/cute-roblox-faces-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/free-robux-for-all-even-noobs_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/free-roblox-suit-shirt-templates_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/free-robux-no-verify_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/top-10-roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/get-free-lote-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/comment-avoir-de-largent-hack-sur-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/how-to-hack-in-roblox-jailbreak-speed_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/roblox-check-cashed-v5-lumber-tycoon-2-money-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/free-robux-now-get-it_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/noob-vs-pro-vs-hacker-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/robux-hack-bc_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/how-to-get-free-money-in-roblox-vehicle-simulator-2021_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.fk.unand.ac.id/repository/roblox-royale-high-cheats-for-diamonds-2021-december_GM431946152.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
font_00_sfnt_off00002ff6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FF6 22404 bytes
SHA-256: 759fada9160c744fc20120a0e393102638f09dc000078b183353fa57495500bb
font_01_sfnt_off000061e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61E3 19300 bytes
SHA-256: 9b54bdc671da96c79e8b294f7bf4b923a3c305d76f7307ff72d5c1376896fa4c

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