Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ea5805cce796116…

MALICIOUS

PDF

35.5 KB Created: 2021-06-28 22:08:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 19391c38c8f00b942c6ea9e15539d54a SHA-1: 6d7371f9c97e89f1a6ab410887003cab67293fdf SHA-256: 2ea5805cce796116a9338167654580a3d685c6525dc9f995adcc0d4e2b2c2a80
122 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, many of which point to websites offering game hacks and cheats. The heuristic 'PDF_SEO_LINK_FARM' indicates a mass of external links, and the 'ML_NYX_PDF_MALICIOUS' model strongly flagged the file. The document body and extracted URLs suggest a lure for users seeking unauthorized game modifications, likely leading to malware or unwanted software.

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/free-costume-roblox-game-hack
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-with-fb-login-2021_GM406889139.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/my-robux_GM431946152.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/free-coin_GM406889139.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/roblox-jailbreak-hacks-for-money_GM431946152.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/free-minecraft-java-edition_GM479516143.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/roblox-gang-rape_GM431946152.pdf
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/download-coin-master-hack-mod-apk_GM406889139.pdf
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/daily-free-spin-link-for-coin-master_GM406889139.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/free-game-pack-with-google-play-coin-master_GM406889139.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-youtube_GM431946152.pdf
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/cmaster-club-coin-master-hack_GM406889139.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/how-to-noclip-in-roblox-without-cheat-engine_GM431946152.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/games-on-roblox-that-give-you-free-robux_GM431946152.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/minecraft-texture-packs-free-download_GM479516143.pdf
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/minecraft-bedrock-free_GM479516143.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/hacks-for-exq-tops-roblox_GM431946152.pdf
    • http://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins_GM406889139.pdf
    • https://elearning.mtsn2magetan.sch.id/__statics/gudangsoal/files/como-hackear-coin-master-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031c6.bin
f3a02b67a3745d3efedb56b2c12b1466ec7706cea1d5a3a95c73a7be7e27e4a2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31C6 22988 bytes
font_01_sfnt_off0000655f.bin
a2d46875426a8fe99b03a727417d7f296ae750039bdee02980f280030e862a05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x655F 19152 bytes

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