Malicious PDF — malware analysis report

Static analysis result for SHA-256 7bb98a92f73c9004…

MALICIOUS

PDF

34.4 KB Created: 2021-07-05 16:32:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: ce40284b7756e48a057dd1db9ca1cd37 SHA-1: 7bd5356ccba4100c1eb54f206c4e297e5a896b4d SHA-256: 7bb98a92f73c900497d7550933c8d2176f816c8c13eacde2408132bca1e75ad4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of free Robux and game hacks to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, likely serving as a gateway to further malicious content or downloads. The document body contains obfuscated text and multiple URLs, reinforcing the phishing and redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/robux-gratis-game-hack In PDF document text
    • http://www.travelone.ae/userfiles/files/cool-roblox-skins-for-free_GM431946152.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/www-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/how-to-get-robux-fast_GM431946152.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/roblox-free-models_GM431946152.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/hack-mod-coin-master_GM406889139.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/play-games-for-robux_GM431946152.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/free-coins-for-flip-master-online_GM406889139.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/free-minecraft-gift-codes_GM479516143.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/the-new-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/how-do-you-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/roblox-fly-hack-2021-download_GM431946152.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/coin-master-cards-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.travelone.ae/userfiles/files/coin-master-heaven-free-spins-today_GM406889139.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_off000030e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E8 22136 bytes
SHA-256: f22ad7cbad27be792c421e459c8cade94628bfed1ee8cf57a41bbef33221f641
font_01_sfnt_off0000620f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x620F 18776 bytes
SHA-256: 64e0eacfd3f3664a1005437cf3df50ecb5e8219eed054557667feeb69243a319

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