Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c796a5cf4ca88c1…

MALICIOUS

PDF

45.9 KB Created: 2021-05-13 20:10:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 6d839aef75640ab44d9d32763bc15eda SHA-1: 2d9c949d5a8c27d3e67b0a991dea4b3cd78a191e SHA-256: 8c796a5cf4ca88c10f8ce040f113da790c3161f5a8322ded69ed7f1eba2f268b
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, identified as a link farm, that direct users to websites offering 'free Robux' or 'coin master hacks'. The document body and extracted URLs suggest a social engineering lure to trick users into visiting potentially malicious sites. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/431946152/free-robux-no-human-verification-or-survey-2021-game-hack
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master_GM406889139.pdf
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/coin-master-free-spins-2021-link_GM406889139.pdf
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/daily-free-spins-and-coins-coin-master_GM406889139.pdf
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-hack_GM406889139.pdf
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey_GM431946152.pdf
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/free-robux-pin-codes_GM431946152.pdf
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/free-robux-just-enter-username_GM431946152.pdf
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/free-robux-codes-generator-no-verification_GM431946152.pdf
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/free-robux-no-verification-no-survey_GM431946152.pdf
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/how-to-make-free-robux_GM431946152.pdf
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-android_GM406889139.pdf
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/roblox-games-with-free-radio_GM431946152.pdf
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/best-hacked-client_GM479516143.pdf
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/robux-matchcomfree-robux_GM431946152.pdf
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/coin-master-game-hack_GM406889139.pdf
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/hacks-for-minecraft-windows-10_GM479516143.pdf
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/minecraft-xbox-one-code-free_GM479516143.pdf
    • https://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/how-to-hack-someones-roblox-account-2021_GM431946152.pdf
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/minecraft-pocket-edition-apk-free-download_GM479516143.pdf
    • http://elearning.hidayatussalam.sch.id/__statics/gudangsoal/files/roblox-piano-hack_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c06.bin
69c995c4c1b57be892c35530d6f4459b6a795153a4957f8d7d0c72f409c11b16		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C06 28252 bytes
font_01_sfnt_off00008d8d.bin
08b2a18d96b3566ec838f0e87c4bb916e955b8f8af04b9064418114d078945b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8D8D 19556 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.