Malicious PDF — malware analysis report

Static analysis result for SHA-256 ed148ae740c6044a…

MALICIOUS

PDF

36.0 KB Created: 2021-07-08 17:20:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 90b6b0845dab0ac28507ef7ae9bc545f SHA-1: f725432f6801a5f9d23b45a58493f52a62e41180 SHA-256: ed148ae740c6044a233e5ed3a1c0208adfe97fa4ea08c233b68e002b57d1a558
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are hosted on what appears to be a link farm. The document body and extracted URLs suggest a lure for free in-game currency or hacks, indicating a phishing or scam attempt. The presence of embedded URLs and the ML classifier's high confidence score support this assessment.

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.tw/app/431946152/codes-to-get-free-robux-game-hack
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/free-gamepass-roblox-2021_GM431946152.pdf
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/websites-to-get-free-robux_GM431946152.pdf
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/easy-roblox-today_GM431946152.pdf
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/descargar-roblox-hackeado-para-android_GM431946152.pdf
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-hack_GM406889139.pdf
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/gaming-dunia-coin-master-free-spins_GM406889139.pdf
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/can-you-get-minecraft-for-free_GM479516143.pdf
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/telecharger-roblox-booga-booga-hack-le-meilleur_GM431946152.pdf
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/robux-today_GM431946152.pdf
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/how-to-get-robux-on-phone_GM431946152.pdf
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/coin-master-hack-without-downloading-apps_GM406889139.pdf
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/free-robux-glitch_GM431946152.pdf
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/free-roblox-accounts-without-pin_GM431946152.pdf
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/hack-coin-master-apk-32-download_GM406889139.pdf
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/free-robux-real_GM431946152.pdf
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/free-powerful-gun-on-nuclear-plant-tycoon-roblox_GM431946152.pdf
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-by-using-inspect_GM431946152.pdf
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/medkit-free-robux-get_GM431946152.pdf
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/free-roblox-shirt-templates-2021_GM431946152.pdf
    • http://mtsnukotaagung.sch.id/__statics/gudangsoal/files/super-simon-says-hack-roblox-espaol_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000364f.bin
2b50e8602c2fba7437ea40021bf3e5ea5374e29198833bec60a353475834b013		 pdf-font-stream PDF embedded font (sfnt) at offset 0x364F 22348 bytes
font_01_sfnt_off00006809.bin
dae15d86f19837a25368e9980f7c547d0fc236531c79ecd70a0408dcd8fbc7fb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6809 18996 bytes

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