Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a96db3821b1093b…

MALICIOUS

PDF

44.0 KB Created: 2021-05-13 03:02:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 14f9ebcf39b996d5f99629bb65795578 SHA-1: 5d6faa93227dfdf0c1f2611a07e389a6251d9621 SHA-256: 7a96db3821b1093be6f26232b7f25e629ba0a80c601d6905ba700d155cb39b86
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document exhibits characteristics of a phishing or scam lure, specifically targeting users interested in game-related cheats and free items. The presence of numerous external links, many pointing to files with 'hack' or 'free spins' in their names, suggests an attempt to direct users to potentially malicious websites or downloads. The ML classifier's high confidence score further supports the malicious nature of this document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9959

Heuristics 5

  • 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.
  • 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.
  • 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/www-free-robux-com-game-hack
    • https://elearning.man2nganjuk.sch.id/__statics/gudangsoal/files/hack-coin-master-game-apk_GM406889139.pdf
    • https://elearning.man2nganjuk.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today_GM406889139.pdf
    • https://elearning.man2nganjuk.sch.id/__statics/gudangsoal/files/coin-master-spin-ml_GM406889139.pdf
    • https://elearning.man2nganjuk.sch.id/__statics/gudangsoal/files/free-robux-no-verification-2021-ios_GM431946152.pdf
    • https://elearning.man2nganjuk.sch.id/__statics/gudangsoal/files/free-role-in-coin-master_GM406889139.pdf
    • https://elearning.man2nganjuk.sch.id/__statics/gudangsoal/files/coin-master-free-spins-blogspot_GM406889139.pdf
    • https://elearning.man2nganjuk.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-haktuts_GM406889139.pdf
    • https://elearning.man2nganjuk.sch.id/__statics/gudangsoal/files/free-coins-and-spins-in-coin-master_GM406889139.pdf
    • https://elearning.man2nganjuk.sch.id/__statics/gudangsoal/files/free-coin-master-cards_GM406889139.pdf
    • https://elearning.man2nganjuk.sch.id/__statics/gudangsoal/files/coin-master-new-link-free-spin_GM406889139.pdf
    • https://elearning.man2nganjuk.sch.id/__statics/gudangsoal/files/how-to-make-robux-on-roblox_GM431946152.pdf
    • https://elearning.man2nganjuk.sch.id/__statics/gudangsoal/files/free-robux-games_GM431946152.pdf
    • https://elearning.man2nganjuk.sch.id/__statics/gudangsoal/files/bux-life-free-robux_GM431946152.pdf
    • https://elearning.man2nganjuk.sch.id/__statics/gudangsoal/files/coin-master-free-spins-for-iphone_GM406889139.pdf
    • https://elearning.man2nganjuk.sch.id/__statics/gudangsoal/files/coin-master-free_GM406889139.pdf
    • https://elearning.man2nganjuk.sch.id/__statics/gudangsoal/files/how-to-get-java-minecraft-for-free_GM479516143.pdf
    • https://elearning.man2nganjuk.sch.id/__statics/gudangsoal/files/free-robux-website_GM431946152.pdf
    • https://elearning.man2nganjuk.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • https://elearning.man2nganjuk.sch.id/__statics/gudangsoal/files/coin-master-game-hunter_GM406889139.pdf
    • https://elearning.man2nganjuk.sch.id/__statics/gudangsoal/files/what-games-on-roblox-give-you-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004b85.bin
3059e68cacf65453f4ce6df38c6b71ae18ca1caf3e9323c2348c78c1cdb49a64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4B85 25316 bytes
font_01_sfnt_off00008586.bin
14f57af6b39b3d296a3731798176bdfeaa687383f4c227b5129dd6733f410dd8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8586 19620 bytes

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