Malicious PDF — malware analysis report

Static analysis result for SHA-256 66fb5002c58ea4b2…

MALICIOUS

PDF

36.9 KB Created: 2021-06-20 01:07:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0711623774641cb1e3c9b591025de1d4 SHA-1: cc80ea1d0ef55af9d1a06b190bc440b4cb073745 SHA-256: 66fb5002c58ea4b280d2bcfc142fb797272a55e86824f77e67cbeb544ad1c1fc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs that are designed to lure users into clicking on them by promising free items or hacks for popular games like Roblox and Coin Master. The heuristic firings indicate that these links lead to redirectors or potentially malicious content, suggesting a phishing or scamming attempt. No scripts were extracted from this sample, but the primary attack vector is the malicious link embedded within the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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-shirt-roblox-game-hack PDF link annotation
    • http://atmos-service.com/images/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://atmos-service.com/images/free-roblox-birthday-printable_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
    • http://atmos-service.com/images/roblox-free-dowlod_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/best-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/roblox-pastebin-roblox-hack_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/free-robux-survey_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/free-roblox-accounts-with-passwords_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://atmos-service.com/images/free-vip-roblox-account-that-really-work_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/how-to-get-free-clothes-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/how-to-hack-roblox-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/free-robux-no-password_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/i-think-my-friend-has-been-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/bux-free-robux_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/roblox-airport-free_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://atmos-service.com/images/coin-master-free-spin-and-coin-link-haktuts-hacking-news_GM406889139.pdfIn PDF document text
    • http://atmos-service.com/images/robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00003b14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3B14 22008 bytes
SHA-256: 42117b74256d97d9e793b52b0ca22929e5c91efe29c845bc845b246564afef40
font_01_sfnt_off00006b9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B9A 19040 bytes
SHA-256: 8a67ccebab0fe3b566ae0770e8520ba5e7e7d391d67ba1893e8493474ec694fe

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