Malicious PDF — malware analysis report

Static analysis result for SHA-256 4448c229d08c0539…

MALICIOUS

PDF

33.7 KB Created: 2021-07-06 02:42:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: b33375acd73762283c495045012014ae SHA-1: e6bba1498541b28aaa475c624c670bb566399bc5 SHA-256: 4448c229d08c0539a61e86de8dddf13443cf89fee0b5be1f6eefcd0a65af4bf2
82 Risk Score

Malware Insights

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

The PDF document contains a lure related to game hacking, specifically for Roblox, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest an attempt to redirect users to a site that likely hosts further malicious content or exploits. The document body itself contains the primary lure and associated URLs.

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/how-to-hack-someones-account-on-roblox-game-hack PDF link annotation
    • https://opac.itp.ac.id/repository/robux-hack-generator-email_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-code-free-robux_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/furk-se-free-key-roblox_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-cheats-jailbreak_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-hack-someone-on-roblox-vermillion_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-free-robux-pastebin-javascript_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-scythe-script-hack_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-hack-roblox-on-cheat-engine_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/roblox-adopt-and-raise-a-cute-kid-money-hack_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/oprewards-com-robux_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/free-robux-generator-no-surveys-2021_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/game-online-roblox-free_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-get-robux-free-2021_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-win-robux_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/how-to-hack-levels-on-roblox-paintball_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/hacks-para-mad-city-roblox-2021_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/easy-robux-hack_GM431946152.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • https://opac.itp.ac.id/repository/hack-money-lumber-tycoon-2-roblox_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_off00002cf3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF3 22148 bytes
SHA-256: f7fc9e2fdd7a5054c3000c3b2bdc96579b698123b7e5c7fb294b124173a255e3
font_01_sfnt_off00005d9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D9F 19324 bytes
SHA-256: 28ba82939c936f9b01a7caeed75c50b5986faeea817d1276e3bf1f7a5f42653e

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