Malicious PDF — malware analysis report

Static analysis result for SHA-256 25e9bea142c5692c…

MALICIOUS

PDF

41.9 KB Created: 2021-05-14 10:39:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e1fb20d6339002b0daa30ea9bdf98566 SHA-1: b4364dc8f6c1a2d2daa5fbf3ee5c473925912ad4 SHA-256: 25e9bea142c5692c0034f8acb32584791c43a00d5b365e7b4fe8e763ff8b1833
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a large number of external links, many of which are SEO-optimized and point to pages offering game hacks and cheats. The presence of a direct link to 'freespins-coin-master-game-hack' and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content. The document's structure suggests it's part of a link farm designed to attract traffic through deceptive content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/freespins-coin-master-game-hack
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-hack_GM431946152.pdf
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/how-many-levels-in-coin-master_GM406889139.pdf
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/instagram-free-coin-master-spins_GM406889139.pdf
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/minecraft-pe-hack-client-2021_GM479516143.pdf
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/coin-master-rewards-app_GM406889139.pdf
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdf
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/free-robux-generator-no-human-verification_GM431946152.pdf
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/free-spins-and-coins-blogspot-coin-master_GM406889139.pdf
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-app_GM431946152.pdf
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/coinmaster-com_GM406889139.pdf
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/free-robux-without-verification-2021_GM431946152.pdf
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-today-hack_GM406889139.pdf
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/free-roblox-toy-codes-2021_GM431946152.pdf
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-daily_GM406889139.pdf
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/free-spins-coin-master-cheats_GM406889139.pdf
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/free-robux-with-no-verification-2021_GM431946152.pdf
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/coin-master-2021-free-spins-link-today_GM406889139.pdf
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/coin-master-links-for-today_GM406889139.pdf
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/robux-generator-no-survey_GM431946152.pdf
    • https://elearning.min1kotamalang.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004947.bin
b2e2faf0cc57b27b26745b9df94fd8ca5b33fd02e6f81686b4bcb9782252a75f		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4947 25108 bytes
font_01_sfnt_off000082a5.bin
c31d741d4f965ff4f04c8652eedf0010194718e591e89cbf3157ab9f7afc750f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x82A5 17884 bytes

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