Malicious PDF — malware analysis report

Static analysis result for SHA-256 aeac1e3d4580f932…

MALICIOUS

PDF

46.1 KB Created: 2021-05-13 14:09:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 736b0a32ec94e4d57667957e1d40bc57 SHA-1: 717b958d7b35998bfe67df65fd72773e4302b4ef SHA-256: aeac1e3d4580f9329569ce1470fa4fcd08b67ad7a1e3cf149633a59c802eff97
70 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and text that lure the user into downloading a file by promising free Robux or game hacks. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple suspicious URLs indicates a likely attempt to deliver a second-stage payload. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

Heuristics 5

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/get-robux-today-game-hack
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/free-spins-coin-master-site-wwwquoracom_GM406889139.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/cool-free-roblox-outfits_GM431946152.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/hackear-coin-master-sin-verificacion_GM406889139.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/roblox-hack-download_GM431946152.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/coin-master-free-rare-cards_GM406889139.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/free-robux-obby_GM431946152.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-facebook-login_GM406889139.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/free-robux-roblox-promo-codes_GM431946152.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/blox-best-robux_GM431946152.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/body-roblox_GM431946152.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/roblox-images_GM431946152.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/roblox-free-robux-com_GM431946152.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/coin-master-free-coins-and-spins-app_GM406889139.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/aternos-free-minecraft-server_GM479516143.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/coin-master-free-coins_GM406889139.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/minecraft-modded-client_GM479516143.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-ios_GM406889139.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/coin-master-hack-spins-download_GM406889139.pdf
    • http://elearningmin3mojokerto.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-gift-cards_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004d2b.bin
004559033c6013c0be886b8422261f606e733ea46fd5cd60b46ef3a6d2b9c738		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D2B 25792 bytes
font_01_sfnt_off000086ca.bin
10d025f04f706eb71cdda4f99784df1b9ccb52e48080e43095e0398eaef6f132		 pdf-font-stream PDF embedded font (sfnt) at offset 0x86CA 2880 bytes
font_02_sfnt_off000090b5.bin
52f9c859b3f332441204d5c114ca3069b0f0b255dc0376a71d348f06f556bd46		 pdf-font-stream PDF embedded font (sfnt) at offset 0x90B5 18536 bytes

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