Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e4fe820e621674a…

MALICIOUS

PDF

43.6 KB Created: 2021-05-13 16:03:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f9813c11f97e7521afd68acc29715727 SHA-1: 473d3c08963a5e2e9360034818060e116ae60778 SHA-256: 9e4fe820e621674afb0507a13de70e50a4db5763f7570290dc3f920fe0ff5a66
102 Risk Score

Malware Insights

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

This PDF document contains a large number of external links, many of which are related to game cheats and free spins, indicating a link farm or scam lure. The document body and extracted URLs strongly suggest a social engineering attempt to direct users to potentially malicious websites. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/free-spins-for-coin-master-app-game-hack
    • https://elearning.ickendari.sch.id/__statics/gudangsoal/files/twitter-coin-master-free-spins_GM406889139.pdf
    • https://elearning.ickendari.sch.id/__statics/gudangsoal/files/coin-master-free-100-spin-link_GM406889139.pdf
    • https://elearning.ickendari.sch.id/__statics/gudangsoal/files/minecraft-hacks-pc_GM479516143.pdf
    • https://elearning.ickendari.sch.id/__statics/gudangsoal/files/coin-master-hack-tips_GM406889139.pdf
    • https://elearning.ickendari.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdf
    • https://elearning.ickendari.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-2021_GM431946152.pdf
    • https://elearning.ickendari.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdf
    • https://elearning.ickendari.sch.id/__statics/gudangsoal/files/minecraft-pocket-edition-free-ios_GM479516143.pdf
    • https://elearning.ickendari.sch.id/__statics/gudangsoal/files/coin-master-links-2021_GM406889139.pdf
    • https://elearning.ickendari.sch.id/__statics/gudangsoal/files/withdraw-robux_GM431946152.pdf
    • https://elearning.ickendari.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdf
    • https://elearning.ickendari.sch.id/__statics/gudangsoal/files/free-spins-and-coins-coin-master-app_GM406889139.pdf
    • https://elearning.ickendari.sch.id/__statics/gudangsoal/files/free-coin-master-hack-no-verification_GM406889139.pdf
    • https://elearning.ickendari.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-youtube_GM431946152.pdf
    • https://elearning.ickendari.sch.id/__statics/gudangsoal/files/free-daily-spins-coin-master-2021_GM406889139.pdf
    • https://elearning.ickendari.sch.id/__statics/gudangsoal/files/is-minecraft-dungeons-free_GM479516143.pdf
    • https://elearning.ickendari.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-jailbreak_GM431946152.pdf
    • https://elearning.ickendari.sch.id/__statics/gudangsoal/files/how-to-hack-roblox_GM431946152.pdf
    • https://elearning.ickendari.sch.id/__statics/gudangsoal/files/minecraft-116-free-download_GM479516143.pdf
    • https://elearning.ickendari.sch.id/__statics/gudangsoal/files/free-spins-coin-master-app-iphone_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ff7.bin
ff92908334aa94e1f706ed1b9b0b145095d034d698c238c6c1d237444300a181		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4FF7 25488 bytes
font_01_sfnt_off0000899b.bin
c0e07e045f0496ba68af439e810d5bb13e23b0d850ef9426c095223eaa712aa7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x899B 17884 bytes

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