Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcee95714a51bb75…

MALICIOUS

PDF

44.7 KB Created: 2021-05-17 00:33:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9c0fbaa8564a41491bf6f6ac50b50103 SHA-1: d0065fa871f59d8c74b1c84c4c706c277f6e4cf3 SHA-256: dcee95714a51bb75ad9cbed5667cf22c0482abf40f4baab5fd5bbbe0f9a2a0a7
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links and a call-to-action button, characteristic of a phishing or scam lure. The document body explicitly mentions "Coin Master 3.5.33 Android Hack" and includes URLs pointing to game hacks and free Robux generators, indicating a social engineering attempt to trick users into downloading potentially malicious files. The presence of multiple external links suggests a link farm or SEO poisoning tactic to attract victims.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9632

Heuristics 4

  • 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.
  • 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/coin-master-3.5.33-android-hack-game-hack
    • http://serviio.org/images/coin-master-hack-2021-apk-download_GM406889139.pdf
    • http://serviio.org/images/coin-master-spin-hack-apk_GM406889139.pdf
    • http://serviio.org/images/win-free-robux_GM431946152.pdf
    • http://serviio.org/images/free-roblox-generator-for-roblox_GM431946152.pdf
    • http://serviio.org/images/how-to-get-free-robux-no-survey_GM431946152.pdf
    • http://serviio.org/images/spins-gratis-coin-master-hoy_GM406889139.pdf
    • http://serviio.org/images/free-premium-roblox_GM431946152.pdf
    • http://serviio.org/images/can-u-get-free-robux_GM431946152.pdf
    • http://serviio.org/images/free-roblox-gift-card-codes-2021-unused_GM431946152.pdf
    • http://serviio.org/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://serviio.org/images/free-robux-codes-no-human-verification_GM431946152.pdf
    • http://serviio.org/images/hack-para-coin-master-sin-verification_GM406889139.pdf
    • http://serviio.org/images/minecraft-windows-10-code-free_GM479516143.pdf
    • http://serviio.org/images/bloxland-earn-free-robux_GM431946152.pdf
    • http://serviio.org/images/how-to-get-free-robux-easy-2021_GM431946152.pdf
    • http://serviio.org/images/hack-coin-master-free_GM406889139.pdf
    • http://serviio.org/images/how-to-get-free-cards-in-coin-master_GM406889139.pdf
    • http://serviio.org/images/free-robux-hack-2021_GM431946152.pdf
    • http://serviio.org/images/free-robux-2021_GM431946152.pdf
    • http://serviio.org/images/free-spins-coin-master-daily_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a41.bin
f835d8e739912658ba3b1f6288a70e8b697466000e74794b9a3dd285fe8bf5dd		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A41 24380 bytes
font_01_sfnt_off00008202.bin
10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8202 2880 bytes
font_02_sfnt_off00008bec.bin
55c2b7ac9e268c18f22df13ff8772fb9709c3f9370fdb7d4bb72adcf8037ad96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8BEC 18264 bytes

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