Malicious PDF — malware analysis report

Static analysis result for SHA-256 65af588f6523928f…

MALICIOUS

PDF

33.6 KB Created: 2021-06-30 03:41:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c1e6302e581673fc8c5f01c3e6fd26fb SHA-1: 105c679a8d12cdb0fa1f9b6bf1370bb0ec50b93f SHA-256: 65af588f6523928f7d9dd20e4f5cb614f954b90d3eb941bdf1b664e744d17bc5
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded URLs that lure users with promises of game hacks and free in-game currency for popular games like Roblox and Coin Master. The primary malicious URL identified is http://netcdn.co/app/431946152/scp-anomaly-breach-roblox-hack-game-hack, which is likely used to host or redirect to a malicious payload or phishing page. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/scp-anomaly-breach-roblox-hack-game-hack PDF link annotation
    • http://www.himalassociation.org/himal/ck_image/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/get-free-robux-and-tickets_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/how-to-get-free-robux-2021-no-survey-no-download_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/coin-master-free-spins-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/real-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/roblox-builders-club-free_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/roblox-backpacking-hack-script_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/free-coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/descargar-roblox-hackeado-para-pc-2021_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/how-to-get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/roblox-best-hack-for-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/how-to-get-free-robux-no-hack-no-surveyno-email_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/roblox-salvage-hack_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/i-want-to-grow-my-account-tiktok-free_GM835599320.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/real-roblox_GM431946152.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://www.himalassociation.org/himal/ck_image/files/is-coin-master-hacks-safe_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_off00002c2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C2D 22596 bytes
SHA-256: fe267a19f5eddbde66eb5727477f4136e71f56d6b87982c791be7562f7625bf2
font_01_sfnt_off00005d84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D84 19440 bytes
SHA-256: 3809c834c4a558d049ef1c7b982f58e628d0fc5315ccaed9d28c0d98853333f7

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