Malicious PDF — malware analysis report

Static analysis result for SHA-256 e37fc85b1b655252…

MALICIOUS

PDF

44.1 KB Created: 2021-05-10 18:24:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5e13ef1bf88257e9dd17c48edd6b3f68 SHA-1: 0e15464e20593274c682ecc130f62328d52fee31 SHA-256: e37fc85b1b655252804446cdde6854d84c025a2b1eb4c184666d474e2c7d0a48
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The document employs social engineering tactics, specifically a 'ClickFix' lure, to trick users into executing commands or navigating to malicious URLs. The embedded URLs and document body content promote free game-related downloads, a common lure for distributing malware. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

Heuristics 4

  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • 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/479516143/how-do-you-install-minecraft-for-free-game-hack
    • https://www.mpos-organs.com/uploads/files/files/minecraft-pe-apk-free-download_GM479516143.pdf
    • https://www.mpos-organs.com/uploads/files/files/coin-master-tricks_GM406889139.pdf
    • https://www.mpos-organs.com/uploads/files/files/coinmasterfreespinlink_GM406889139.pdf
    • https://www.mpos-organs.com/uploads/files/files/facebook-coin-master-free-spins-link_GM406889139.pdf
    • https://www.mpos-organs.com/uploads/files/files/how-to-setup-a-minecraft-server-for-free_GM479516143.pdf
    • https://www.mpos-organs.com/uploads/files/files/microsoft-free-robux_GM431946152.pdf
    • https://www.mpos-organs.com/uploads/files/files/easy-roblox-today_GM431946152.pdf
    • https://www.mpos-organs.com/uploads/files/files/minecraft-free-play-no-download_GM479516143.pdf
    • https://www.mpos-organs.com/uploads/files/files/can-you-get-robux-for-free_GM431946152.pdf
    • https://www.mpos-organs.com/uploads/files/files/free-robux-hack-no-human-verification_GM431946152.pdf
    • https://www.mpos-organs.com/uploads/files/files/download-coin-master-hack-tool-v1-9_GM406889139.pdf
    • https://www.mpos-organs.com/uploads/files/files/roblox-script-hacks_GM431946152.pdf
    • https://www.mpos-organs.com/uploads/files/files/coin-master-free-spins-without-human-verification_GM406889139.pdf
    • https://www.mpos-organs.com/uploads/files/files/robux-generator-no-human-verification-2021_GM431946152.pdf
    • https://www.mpos-organs.com/uploads/files/files/coin-master-free-online-game_GM406889139.pdf
    • https://www.mpos-organs.com/uploads/files/files/claim-free-robux_GM431946152.pdf
    • https://www.mpos-organs.com/uploads/files/files/free-robux-websites-that-work_GM431946152.pdf
    • https://www.mpos-organs.com/uploads/files/files/free-redeem-code-for-coin-master_GM406889139.pdf
    • https://www.mpos-organs.com/uploads/files/files/free-robux-master_GM431946152.pdf
    • https://www.mpos-organs.com/uploads/files/files/coin-master-free-spins-twitter_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004f36.bin
b33418df43173302bdd1ddd5153a68fe06fbd3d55c48a930d6b3c34804069319
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F36 25588 bytes
font_01_sfnt_off000089dc.bin
cbfa2983e9daac20df1fbb4ff8997c57b22e5209ec416caeaf9e5389c70ab7ce
pdf-font-stream PDF embedded font (sfnt) at offset 0x89DC 18416 bytes