Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ba13c153809c5a6…

MALICIOUS

PDF

43.0 KB Created: 2021-05-11 20:01:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 84fcd8df8617c9ef958fa280387680db SHA-1: a7489790d40336f8d73a422dc89cc31d01685e44 SHA-256: 6ba13c153809c5a678789042fddc3c2d4f33934fdadf58122555a8034a9a8ca6
102 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are related to game hacks and cheats, suggesting a link farm or phishing attempt. The ML classifier also flagged this PDF as malicious with high confidence. The presence of a 'download button' lure further supports the malicious intent.

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/431946152/how-do-i-get-free-robux-on-roblox-game-hack
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/lucky-patcher-coin-master-hack_GM406889139.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/how-to-hack-people-in-roblox_GM431946152.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/minecraft-pe-hack-client-ios_GM479516143.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/is-minecraft-free-on-computer_GM479516143.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/websites-that-give-free-robux_GM431946152.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/how-to-get-free-roblox-gift-cards_GM431946152.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/coin-master-link-app_GM406889139.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-usa-2021_GM406889139.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/free-robux-hack-no-verification_GM431946152.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/free-spins-coin-master-blogspot_GM406889139.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-link_GM406889139.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/lazy-blocks-com-free-robux_GM431946152.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/hack-coin-master-using-cheat-engine_GM406889139.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/mcpe-master-coins-hack-download_GM406889139.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/roblox-hack-scripts-pastebin_GM431946152.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021_GM406889139.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/free-robux-generator-com-roblox-hack_GM431946152.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/coin-master-free-spins-cheat_GM406889139.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/coin-master-link-daily-get-free-spins-amp_GM406889139.pdf
    • https://elearning.mtsn2kotamagelang.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-2021_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b36.bin
00354a3efee45756dccffc995b20817de602d96d87456bbf3aaf943d236ca294		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B36 25236 bytes
font_01_sfnt_off00008505.bin
4ccd670e6a0bad46446eeab730d71d218c542e1f5d690955267ad9a8693a3722		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8505 18524 bytes

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