Malicious PDF — malware analysis report

Static analysis result for SHA-256 f97e4d0b1f3739a6…

MALICIOUS

PDF

45.2 KB Created: 2021-05-17 18:34:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 0dbfa9fb5fbb58750036338ee8e7c3ea SHA-1: 7a8b70cdafea802e09f7f3a1b85064eb808cf4e0 SHA-256: f97e4d0b1f3739a66ce6bc6d462f091e4f561728f80c4ecf22daaa4513d29f21
102 Risk Score

Malware Insights

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

This PDF document functions as a link farm, directing users to various external URLs that are disguised as game-related hacks or cheats. The presence of numerous SEO-optimized PDF links suggests an attempt to attract traffic and potentially distribute malware or lead users to phishing 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/fly-hacks-roblox-game-hack
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/coin-master-hack-apk-iphone_GM406889139.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/download-coin-master-apk-hacked_GM406889139.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/how-to-get-free-roebucks-on-roblox_GM431946152.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-link-today_GM406889139.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/www-roblox-com-free-robux_GM431946152.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/how-to-get-roebucks_GM431946152.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/how-to-get-free-spins-on-coin-master-2021-iphone_GM406889139.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/free-spin-coin-master-link-2021_GM406889139.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/robuxlove-net-free-robux_GM431946152.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/coin-master-free-spin-link-app_GM406889139.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/free-robux-with-no-survey_GM431946152.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/free-spins-on-coin-master-app_GM406889139.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/free-spins-for-coin-master-2021_GM406889139.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/coin-master-free-spins-2-5-2021_GM406889139.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/how-do-you-get-free-daily-spins-on-coin-master_GM406889139.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/free-minecraft-printables_GM479516143.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/get-me-robux-for-free_GM431946152.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/how-to-hack-coin-master-game-without-root_GM406889139.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/rbx-sites_GM431946152.pdf
    • https://elearningmts.al-ahliyah.id/__statics/gudangsoal/files/free-coins-and-spins-for-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004f96.bin
cc0ce54475adf3b0ca97dab459b838848d9011401e4742e12bd69c609b95e17f		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F96 28668 bytes
font_01_sfnt_off00008db8.bin
8228405b2edfb577810dc48047d01ebb0016ae99a069ca397290bf64955e611c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8DB8 18528 bytes

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