Malicious PDF — malware analysis report

Static analysis result for SHA-256 26960ccb3336f19f…

MALICIOUS

PDF

33.1 KB Created: 2021-07-19 15:21:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 5b7db6ba40d99d220b3f18a6ef0ce417 SHA-1: 3042f0947249a3e20d66c942ee3e15daed6e186a SHA-256: 26960ccb3336f19f3c65f5ee97a88a670bc8d25386fdc7ed036d207baa360eab
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links and a call-to-action to a "free Robux generator" lure, indicating a phishing or scam attempt. The embedded URLs suggest the document is designed to redirect users to malicious websites that likely host further exploits or scams. No scripts were extracted from this sample, but the overall pattern is consistent with a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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-get-free-robux-no-verification-game-hack PDF link annotation
    • http://omahahospitalityhalloffame.org/images/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://omahahospitalityhalloffame.org/images/free-coin-master-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://omahahospitalityhalloffame.org/images/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://omahahospitalityhalloffame.org/images/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://omahahospitalityhalloffame.org/images/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • http://omahahospitalityhalloffame.org/images/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • http://omahahospitalityhalloffame.org/images/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://omahahospitalityhalloffame.org/images/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://omahahospitalityhalloffame.org/images/coin-master-free-spins-daily_GM406889139.pdfIn PDF document text
    • http://omahahospitalityhalloffame.org/images/roblox-jailbreak-hack_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_off00002b50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B50 22464 bytes
SHA-256: dca4f45a894878d41f51e78b59f6fb5b0d2c46f31b45e702160b62a12ab83db9
font_01_sfnt_off00005d54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D54 18948 bytes
SHA-256: 9dcb646a4577617f23880fd9ce8a94083064c98cd4092779ba74cf00f9732304

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