Malicious PDF — malware analysis report

Static analysis result for SHA-256 88f7045acb1a4270…

MALICIOUS

PDF

35.5 KB Created: 2021-06-26 13:19:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: f9606eb6a212e9ec179ac43290901a6c SHA-1: 1fd596835ab6dcb0d54532b694d4bf96ea082584 SHA-256: 88f7045acb1a4270e2f63d6ddec17377695020d60ddd180d3cb8011e0a22eec3
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are SEO-optimized and point to pages offering game hacks or cheats. The document body explicitly mentions "Free Robux Obby No Password No Human Verification" and includes a URL that likely leads to a download or further redirection. This indicates a social engineering attempt to trick users into downloading potentially malicious 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-robux-obby-no-password-no-human-verification-game-hack
    • https://mayunisma.sch.id/__statics/gudangsoal/files/jailbreak-hacks-for-roblox_GM431946152.pdf
    • https://mayunisma.sch.id/__statics/gudangsoal/files/free-spins-coin-master-2021-today_GM406889139.pdf
    • https://mayunisma.sch.id/__statics/gudangsoal/files/my-account-got-hacked-in-roblox_GM431946152.pdf
    • https://mayunisma.sch.id/__statics/gudangsoal/files/free-coin-master-spins-no-human-verification_GM406889139.pdf
    • https://mayunisma.sch.id/__statics/gudangsoal/files/how-to-download-minecraft-for-free-on-mac_GM479516143.pdf
    • https://mayunisma.sch.id/__statics/gudangsoal/files/free-spin-coin-master-app-download_GM406889139.pdf
    • https://mayunisma.sch.id/__statics/gudangsoal/files/roblox-hack-robux-and-tix-no-download-no-survey_GM431946152.pdf
    • https://mayunisma.sch.id/__statics/gudangsoal/files/coin-master-hack-without-downloading-apps_GM406889139.pdf
    • https://mayunisma.sch.id/__statics/gudangsoal/files/coin-master-34-4-hack_GM406889139.pdf
    • https://mayunisma.sch.id/__statics/gudangsoal/files/coin-master-time-speed-hack_GM406889139.pdf
    • https://mayunisma.sch.id/__statics/gudangsoal/files/free-coins-and-spins-coin-master-2021_GM406889139.pdf
    • https://mayunisma.sch.id/__statics/gudangsoal/files/coin-master-hack-without-verification_GM406889139.pdf
    • https://mayunisma.sch.id/__statics/gudangsoal/files/youtub-robux-hack_GM431946152.pdf
    • https://mayunisma.sch.id/__statics/gudangsoal/files/free-robux-just-click_GM431946152.pdf
    • https://mayunisma.sch.id/__statics/gudangsoal/files/how-to-download-minecraft-java-edition-for-free_GM479516143.pdf
    • https://mayunisma.sch.id/__statics/gudangsoal/files/how-to-get-robux-for-free-2021_GM431946152.pdf
    • https://mayunisma.sch.id/__statics/gudangsoal/files/minecraft-hacks-list_GM479516143.pdf
    • https://mayunisma.sch.id/__statics/gudangsoal/files/roebucks-on-roblox_GM431946152.pdf
    • https://mayunisma.sch.id/__statics/gudangsoal/files/free-minecraft-java-edition_GM479516143.pdf
    • https://mayunisma.sch.id/__statics/gudangsoal/files/how-to-get-robux-on-phone_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003164.bin
fe932341eb5009480c4277e983331dbd2ef42f34d250298c71861408c76dabd5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3164 22260 bytes
font_01_sfnt_off0000630e.bin
3bfec7d3f1d86f6c0d6becf0bdc4eb6142d69f73fc977f80b8271bbf7497c2a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x630E 20008 bytes

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