Malicious PDF — malware analysis report

Static analysis result for SHA-256 efbbe01b0afe8b86…

MALICIOUS

PDF

41.9 KB Created: 2021-05-13 15:25:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: c8e96ded6891f9040dcd0b57b4e7970e SHA-1: 795726afbd15730e5f1ae108b827efe147b600f6 SHA-256: efbbe01b0afe8b86cea7e8659abb65419c3fba176981c5ddd6c56a4417fc12c6
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains numerous embedded URLs and a primary external URI pointing to game hacking content, strongly suggesting a lure for users seeking cheats or exploits. The ML classifier also flagged this PDF as malicious with high confidence. The presence of a download button lure and callback phishing indicators further supports a malicious intent to trick users into downloading or interacting with harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/431946152/roblox-hax-game-hack
    • http://ivpr.net/images/roblox-premium-free_GM431946152.pdf
    • http://ivpr.net/images/websites-to-get-free-robux_GM431946152.pdf
    • http://ivpr.net/images/coin-master-tricks-and-hacks_GM406889139.pdf
    • http://ivpr.net/images/how-to-get-minecraft-for-free-on-laptop_GM479516143.pdf
    • http://ivpr.net/images/free-robux-hack-2021_GM431946152.pdf
    • http://ivpr.net/images/como-hackear-coin-master-espaol_GM406889139.pdf
    • http://ivpr.net/images/roblox-free-robux-com_GM431946152.pdf
    • http://ivpr.net/images/twitter-coin-master-free-spins-link_GM406889139.pdf
    • http://ivpr.net/images/free-ways-to-get-robux_GM431946152.pdf
    • http://ivpr.net/images/real-free-robux-codes_GM431946152.pdf
    • http://ivpr.net/images/how-to-get-free-items-on-roblox_GM431946152.pdf
    • http://ivpr.net/images/como-hackear-coin-master_GM406889139.pdf
    • http://ivpr.net/images/free-draw-roblox_GM431946152.pdf
    • http://ivpr.net/images/coin-master-hack-mod-apk-free-download_GM406889139.pdf
    • http://ivpr.net/images/coin-master-free-spins-link-haktuts_GM406889139.pdf
    • http://ivpr.net/images/how-can-i-get-free-coinsn-coin-master_GM406889139.pdf
    • http://ivpr.net/images/how-do-you-get-free-robux-without-paying_GM431946152.pdf
    • http://ivpr.net/images/minecraft-free-apk-download-016-0_GM479516143.pdf
    • http://ivpr.net/images/roblox-arsenal-hack_GM431946152.pdf
    • http://ivpr.net/images/how-to-hack-roblox-accounts-on-phone_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000046e7.bin
06579930dcee6b99fad39c3a6a594fc9c9e891bce2a84e5941c17baae4c5a7f5		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46E7 26448 bytes
font_01_sfnt_off00008238.bin
fe32b9a84fd76e39179a36863ed7420befb5e97ed4cdc4cc8cf112027e4fb10b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8238 18012 bytes

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