Malicious PDF — malware analysis report

Static analysis result for SHA-256 7503463da3265e7a…

MALICIOUS

PDF

44.1 KB Created: 2021-05-10 18:06:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 8e180267d838927f4b4f636ab7f1196d SHA-1: 2013e816b3e8a897ee6672d5cabb0d0be65b77ef SHA-256: 7503463da3265e7a383d0251fb3d2bc5d6bd07e1d7691e71cc0d827d7f20466e
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple external URIs that are disguised as links to game hacks or generators, a common lure for phishing and scamming operations. The ML classifier also flagged this PDF as malicious. The document body, though partially corrupted, contains URLs that reinforce the lure of free game-related items, suggesting the primary goal is to redirect users to potentially malicious websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9656

Heuristics 5

  • 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.
  • 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 https://netcdn.xyz/app/479516143/free-24-7-minecraft-server-game-hack PDF link annotation
    • http://dcmetroapp.com/images/minecraft-marketplace-free_GM479516143.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/oprewards-login_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/coin-master-hack-to-get-free-spins_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/coin-master-hack-android-root_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-spin-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/real-roblox_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-robux-no-anti-bot-verification_GM431946152.pdfIn PDF document text
    • http://dcmetroapp.com/images/coin-master-hack-spin-generator_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/coin-master-daily-free-cards_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/corn-master_GM406889139.pdfIn PDF document text
    • http://dcmetroapp.com/images/free-spin-and-win-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004798.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4798 25220 bytes
SHA-256: 90ffe2220b174059ef76b44f921f58c14778a8c30818b808500f9b9c5cb861f8
font_01_sfnt_off00008124.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8124 2824 bytes
SHA-256: 61b3a573627d4f03d30684157e1627da3b4499cefab0fdf17b45999135b0250b
font_02_sfnt_off00008aca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ACA 17924 bytes
SHA-256: 6d441e79e96f2496e7d363a8fd4eac2c27151cb1acb88a4e303d16644f1cdf17

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