Malicious PDF — malware analysis report

Static analysis result for SHA-256 d10e2ea758de8af9…

MALICIOUS

PDF

46.3 KB Created: 2021-05-14 02:34:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1d80d7d777dcbbb519832ad63b665888 SHA-1: 1977a4db382d99e3239db1a2294e7453ac7a829d SHA-256: d10e2ea758de8af975907f890dc33abe84ef1c24f2490513f49edb204455b585
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous embedded links, many of which are SEO-optimized and point to websites offering game-related cheats and freebies. The primary URL, 'https://netcdn.xyz/app/431946152/microsoft-bing-free-robux-game-hack', suggests a lure for free Robux, a common phishing tactic. The presence of a 'PDF_SEO_LINK_FARM' heuristic indicates a large number of external links, likely for SEO manipulation or to distribute malicious content. While no scripts were explicitly extracted, the structure and embedded URLs strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9278

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/microsoft-bing-free-robux-game-hack
    • https://elearningmts01sgs.sch.id/__statics/gudangsoal/files/coin-master-free-mighty-lion-card_GM406889139.pdf
    • https://elearningmts01sgs.sch.id/__statics/gudangsoal/files/get-free-spins-in-coin-master_GM406889139.pdf
    • https://elearningmts01sgs.sch.id/__statics/gudangsoal/files/is-there-any-way-to-get-free-robux_GM431946152.pdf
    • https://elearningmts01sgs.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-windows-10-for-free_GM479516143.pdf
    • https://elearningmts01sgs.sch.id/__statics/gudangsoal/files/roblox-studio-free-robux_GM431946152.pdf
    • https://elearningmts01sgs.sch.id/__statics/gudangsoal/files/how-to-hack-coin-master-android_GM406889139.pdf
    • https://elearningmts01sgs.sch.id/__statics/gudangsoal/files/coin-master-free-link_GM406889139.pdf
    • https://elearningmts01sgs.sch.id/__statics/gudangsoal/files/how-to-get-hacks-on-roblox_GM431946152.pdf
    • https://elearningmts01sgs.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-codes-2021_GM431946152.pdf
    • https://elearningmts01sgs.sch.id/__statics/gudangsoal/files/blox-world-free-robux_GM431946152.pdf
    • https://elearningmts01sgs.sch.id/__statics/gudangsoal/files/hack-coin-master-no-survey_GM406889139.pdf
    • https://elearningmts01sgs.sch.id/__statics/gudangsoal/files/free-robux-websites-that-actually-work-2021_GM431946152.pdf
    • https://elearningmts01sgs.sch.id/__statics/gudangsoal/files/can-lucky-patcher-hack-coin-master_GM406889139.pdf
    • https://elearningmts01sgs.sch.id/__statics/gudangsoal/files/coin-master-free-2021-spin-link_GM406889139.pdf
    • https://elearningmts01sgs.sch.id/__statics/gudangsoal/files/roblox-cheat-robux_GM431946152.pdf
    • https://elearningmts01sgs.sch.id/__statics/gudangsoal/files/minecraft-pocket-edition-mods-for-free_GM479516143.pdf
    • https://elearningmts01sgs.sch.id/__statics/gudangsoal/files/roblox-arsenal-hacks-download_GM431946152.pdf
    • https://elearningmts01sgs.sch.id/__statics/gudangsoal/files/free-minecraft-java-code_GM479516143.pdf
    • https://elearningmts01sgs.sch.id/__statics/gudangsoal/files/coin-master-free-spin-trick_GM406889139.pdf
    • https://elearningmts01sgs.sch.id/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c36.bin
acdaee4979bdd7ae350a314bdef451acd89a52779246d79a4b9c6b658e97d19c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C36 25136 bytes
font_01_sfnt_off00008652.bin
4889dc98a6bfd3c9244583f92387be58625a91e7a969778ad35ada89b27ed636		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8652 3084 bytes
font_02_sfnt_off000090f8.bin
f6da71d3ec7876d1f2450260025b1db4712d77c7886386833aafb50cc2347919		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90F8 18720 bytes

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