Malicious PDF — malware analysis report

Static analysis result for SHA-256 73e5a735cf29cfdf…

MALICIOUS

PDF

34.7 KB Created: 2021-06-28 04:44:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e6c05c753932c2bfc1ed16c7bab329fb SHA-1: be5eaddc491cbdd5755d5b6c35ba64516de34714 SHA-256: 73e5a735cf29cfdf0223392ae6480e01fc273767452e980b1c6f366de35931c4
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded links, forming a link farm, that direct users to external sites offering game hacks and cheats. The primary URL, http://netcdn.co/app/431946152/free-flow-id-roblox-game-hack, is likely a malicious download or exploit. The document's structure and content strongly suggest a phishing or malware distribution attempt disguised as game-related content.

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 http://netcdn.co/app/431946152/free-flow-id-roblox-game-hack
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/free-robux-no-verification-2021-ios_GM431946152.pdf
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/god-of-elements-roblox-element-hack_GM431946152.pdf
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/roblox-iphone-cheats_GM431946152.pdf
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/how-to-hack-super-jump-on-roblox_GM431946152.pdf
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/my-account-was-hacked-on-roblox-what-do-i-do_GM431946152.pdf
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/free-minecraft-hacks_GM479516143.pdf
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/free-robux-generator-no-verification_GM431946152.pdf
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/how-to-hack-a-private-server-roblox_GM431946152.pdf
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/how-to-get-money-on-roblox-cheat_GM431946152.pdf
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/roblox-hack-apk-android-2021_GM431946152.pdf
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/roblox-pokemon-brick-bronze-hack-2021_GM431946152.pdf
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/free-robux-no-verification-no-download_GM431946152.pdf
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/epic-mini-games-cheats-on-roblox_GM431946152.pdf
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/free-codes-for-roblox-toys_GM431946152.pdf
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/hack-de-roblox-de-robux-por-mega_GM431946152.pdf
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/w-to-get-free-robux_GM431946152.pdf
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/roblox-hack-that-works-jailbreak_GM431946152.pdf
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/free-hacks-for-roblox-games_GM431946152.pdf
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/enter-password-for-free-robux-animation_GM431946152.pdf
    • https://elearning.maudu-rejoso.sch.id/__statics/gudangsoal/files/roblox-hack-mod-menu-android_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031af.bin
c4fa96dea99001160bde6782d3e0b20deb6337e025a58c52029b341585fe6444		 pdf-font-stream PDF embedded font (sfnt) at offset 0x31AF 22008 bytes
font_01_sfnt_off000062b8.bin
b1f08d34fbeaf8f295b66e7cf3a5f7bb991e6e6cb2993974f70623588a2dfb11		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62B8 18988 bytes

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