Malicious PDF — malware analysis report

Static analysis result for SHA-256 2fe5d24d98840066…

MALICIOUS

PDF

45.0 KB Created: 2021-06-09 06:13:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 29045e888151245823ac6dfe9d145333 SHA-1: 4b41b3ddb0733f1af6b1b9a070c556e48396f6a1 SHA-256: 2fe5d24d9884006615755baa63e5fdb49db93de077b56db658117147518ffd4f
102 Risk Score

Malware Insights

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

The PDF contains a large number of external links, many of which are SEO-optimized and point to files related to game cheats and free currency, suggesting a lure for potentially unwanted software or scams. The presence of a "download" call-to-action button further supports this. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.tw/app/431946152/free-mouse-auto-clicker-for-roblox-game-hack
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/free-robux-no-offers_GM431946152.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/games-on-roblox-that-give-you-free-robux_GM431946152.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/cute-free-hair-on-roblox_GM431946152.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/how-to-hack-roblox-for-robux_GM431946152.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/tiktok-free-ad-credit_GM835599320.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/free-coin-master-coins-and-spins_GM406889139.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/old-roblox-accounts-for-free_GM431946152.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/no-scam-free-robux_GM431946152.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/free-spins-and-coins-coin-master-facebook_GM406889139.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/coin-master-hack-spins-apk_GM406889139.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/free-robux-that-actually-works-2021_GM431946152.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/free-robux-co_GM431946152.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/deadly-sins-retribution-release-script-roblox-hack_GM431946152.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/coin-master-free-spins-generator-no-human-verification_GM406889139.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/coin-master-free-cards-link_GM406889139.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/robux-websites-that-work_GM431946152.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/how-to-use-scripts-in-roblox-hack_GM431946152.pdf
    • http://elearningalislah.mialishlahtiudangondang.com/__statics/gudangsoal/files/coin-master-free-coins-app_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00005170.bin
345ad2faba04cbfa541f3b181bbdb00d254881b49bc854356f5fe6d2de4569ce		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5170 25396 bytes
font_01_sfnt_off00008c1b.bin
ad9a3209cf6c69d077afff22e662bcf08f86220217bbe86b2c29b74d2a7a2c78		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C1B 18680 bytes

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