Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e515c9119dda10f…

MALICIOUS

PDF

34.2 KB Created: 2021-06-28 04:59:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 8a17a1d789d1782a512aa61cc5da9a44 SHA-1: f48ee39d96c97fe53ea57afb54f10ffb3beeb615 SHA-256: 1e515c9119dda10f0f047f9a5fc73e32738e1442fc63e811e9ca20913332cf4c
122 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which point to websites offering game hacks and cheats. The ML classifier and PDF link farm heuristics indicate a high likelihood of malicious intent, likely to direct users to download malware or engage in phishing. The document body and extracted URLs strongly suggest a lure for downloading unauthorized game modifications or exploits.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/roblox-hack-apk-android-2021-game-hack PDF link annotation
    • http://ggmtc.net/userfiles/files/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/hack-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/how-to-get-free-coins-on-tiktok_GM835599320.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/free-multiplayer-minecraft-server_GM479516143.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/roblox-mineverse-cheats_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/minecraft-maps-pe-free-download_GM479516143.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/pubg-uc-30_GM1330123889.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/coin-master-hack-tool-v1-9-apk_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/how-to-buy-stuff-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/free-robux-for-kids-no-human-verivacation_GM431946152.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/coin-master-hack-version-download-ios_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/free-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://ggmtc.net/userfiles/files/coin-master-free-link-spin_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_off00002d75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D75 22340 bytes
SHA-256: dba8a7b169e5f6a818a470ce3691db80a67b6a0b1938ffa21b9aa8686388de2d
font_01_sfnt_off00005f10.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F10 19528 bytes
SHA-256: fd4939716c21aab3ea59f6612df6ce70bf10378a6ff70084bd01c8d8536b4c58

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