Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3fa0608d330f5d8…

MALICIOUS

PDF

49.4 KB Created: 2021-05-13 23:06:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-14
MD5: f4d7d3258ac08bcd8b2462c3343810b8 SHA-1: 88aa1c02962f3410df4aa4f7d427aa5dba7ecaaa SHA-256: d3fa0608d330f5d84e90a35ed9d4b00acfbeaa7e0647c08540c3bef40cd7d666
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains embedded links and heuristics indicate it is malicious, likely attempting to trick users into downloading further malicious content. The document body and extracted URLs suggest a lure related to game cheats or free spins for games like Coin Master and Roblox. The ML classifier strongly flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8642

Heuristics 4

  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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/406889139/haktuts.in-2021-09-coin-master-50-free-spin-and-coin-link.html-m-1-game-hack PDF link annotation
    • http://118.174.0.244/UserFiles/File/coin-master-facebook-hack_GM406889139.pdfPDF link annotation
    • http://118.174.0.244/UserFiles/File/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/roblox-tracker_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/i-want-robux_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/coin-master-cheat-free_GM406889139.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/minecraft-gun-mod-download-free_GM479516143.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/roblox-free-item-codes_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/coin-master-apk-hack-35-8_GM406889139.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/coin-master-free-spins-1701-20_GM406889139.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/free-robux-mod_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/how-do-you-get-roebucks-for-free_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/se-puede-hackear-coin-master_GM406889139.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://118.174.0.244/UserFiles/File/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a70.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A70 24452 bytes
SHA-256: 16a63784ba84145865fca9391a27c8c82f5b028d5f121fc73d78f677a6ac2150
font_01_sfnt_off00008297.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8297 4128 bytes
SHA-256: 94fcb381239c29100752ee892ac52c1bd3adfaf549c4fef32483ae1d5678ac02
font_02_sfnt_off000090bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90BB 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off00009aaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9AAA 19504 bytes
SHA-256: 7faa6dfb3d694d90b26991393cee8819b968e3c6541be97391070d01954e6158

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