Malicious PDF — malware analysis report

Static analysis result for SHA-256 a09dba8352ae273d…

MALICIOUS

PDF

44.0 KB Created: 2021-05-14 02:41:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 7e019b97ef2e81430685b195bd878b3b SHA-1: 67311ffad7b5eb22ad45c1e6e8d012731ca57a2e SHA-256: a09dba8352ae273d04cdaad49a654980287a7fb1ff2d8e2a8addfef07894e01a
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external sites, many of which are SEO-optimized PDFs designed to lure users with promises of free Robux or game hacks. The ML classifier strongly indicated maliciousness, and the presence of embedded links suggests an attempt to redirect users to download further malicious content or visit phishing sites. No scripts were extracted, but the overall structure and linked content point to a common social engineering lure.

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/431946152/get-me-free-robux-game-hack
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/minecraft-hacked-client-download_GM479516143.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-no-human-verification_GM431946152.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/roblox-www-com_GM431946152.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/coin-master-unlimited-spin-hack-apk_GM406889139.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/free-unlimited-coin-master-online-tool_GM406889139.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/how-to-find-coin-master-free-spin-link_GM406889139.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/free-robux-safe_GM431946152.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/how-to-download-minecraft-for-free-on-android_GM479516143.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/coin-master-spin-hack_GM406889139.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/card-hack-for-coin-master_GM406889139.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/blogspot-free-spins-coin-master_GM406889139.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-fb_GM406889139.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/free-spins-coin-master-daily_GM406889139.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/how-to-free-robux_GM431946152.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/coin-master-free-spins-generator_GM406889139.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-codes-2021_GM431946152.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/free-minecraft-skins_GM479516143.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/daily-free-spins-on-coin-master_GM406889139.pdf
    • https://elearning.masultanhadlirin.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-in-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004f60.bin
ebdeefb3ee20740eb046dc17ab32a526bbbd6f3827dfe1f2ad5b0f34573a1f91		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F60 26824 bytes
font_01_sfnt_off000089d6.bin
e3f176f8735a7a9c211288ec5f3dfc0a25536bb398bd4870e4b297ba4f960079		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89D6 18312 bytes

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