Malicious PDF — malware analysis report

Static analysis result for SHA-256 61ecf3502462dd3e…

MALICIOUS

PDF

33.6 KB Created: 2021-07-05 18:19:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 81c4262b83033953f71f4e6513c33818 SHA-1: 8716ba15fc074baa20325901d907fc5f67a78cda SHA-256: 61ecf3502462dd3e4ae4575d43fbe0f4c1f07ef144eca9e496c7dcbe7ab84df3
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains numerous embedded URLs and a prominent link to 'tiktok-free-like-and-followers-game-hack', suggesting a lure for users seeking in-game advantages. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple game-related hack URLs reinforces the phishing or malware distribution intent. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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 http://netcdn.tw/app/835599320/tiktok-free-like-and-followers-game-hack
    • http://www.pustaka.pn-calang.go.id/repository/cool-minecraft-hacks_GM479516143.pdf
    • http://pustaka.pn-calang.go.id/repository/ok-google-free-roblox_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/daily-free-spins-for-coin-master_GM406889139.pdf
    • http://pustaka.pn-calang.go.id/repository/free-robux-gift-card_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/free-roblox-shirt-templates-2021_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/roblox-army-robux_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/free-rare-cards-for-coin-master_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/how-to-speed-hack-on-roblox-mac_GM431946152.pdf
    • http://pustaka.pn-calang.go.id/repository/how-to-cheat-in-robux_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/how-to-make-a-minecraft-bedrock-server-for-free_GM479516143.pdf
    • http://pustaka.pn-calang.go.id/repository/free-tiktok-accounts_GM835599320.pdf
    • http://pustaka.pn-calang.go.id/repository/roblox-mad-city-hack-money-francais_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/free-no-survey-roblox-rubox-generator_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-free-spin-link-today-2021_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/www-claim-gg-to-earn-free-robux_GM431946152.pdf
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-free-gift-link-2021_GM406889139.pdf
    • http://pustaka.pn-calang.go.id/repository/free-roblox-accounts-with-robux-that-work-2021-november_GM431946152.pdf
    • http://pustaka.pn-calang.go.id/repository/coin-master-hack-without-verification_GM406889139.pdf
    • http://www.pustaka.pn-calang.go.id/repository/free-coin-master-hacks-no-verification_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003113.bin
85703f1fc87712982f50be3f224a2e029994192d126698284a84e0a7ac63a5ab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3113 21432 bytes
font_01_sfnt_off0000604e.bin
3afeeac39ed0db8b91fc029415cd8561c3b7329216b39dce1b8bf3ac61251e2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x604E 18384 bytes

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