Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f0a0f7dc0d823c8…

MALICIOUS

PDF

34.5 KB Created: 2021-05-22 15:40:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1e1fe52dc03ba1a2ad7870464fd03262 SHA-1: a633547b9b0253d8c5abf18119549f470610f9c0 SHA-256: 6f0a0f7dc0d823c8007d18bcea9d2577d74d3f8e88d00288a720077d7872bbc1
82 Risk Score

Malware Insights

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

The document exhibits a high-confidence ML classification as malicious and contains heuristics indicating a browser extension installation lure. It also includes external URIs pointing to content related to 'free game hack' and 'free robux', suggesting a social engineering tactic to trick users into downloading malicious content or providing credentials. The presence of multiple related PDF URLs further supports this attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9508

Heuristics 4

  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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/835599320/how-to-get-tiktok-famous-free-game-hack
    • http://pa-bengkulukota.go.id/images/free-robux-no-verification-no-download_GM431946152.pdf
    • http://pa-bengkulukota.go.id/images/free-robux-gen_GM431946152.pdf
    • http://pa-bengkulukota.go.id/images/free-spins-and-coins-coin-master-links_GM406889139.pdf
    • http://pa-bengkulukota.go.id/images/free-robux-no-verification-no-download-2021_GM431946152.pdf
    • http://pa-bengkulukota.go.id/images/how-to-get-free-robux-no-human-verification_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003159.bin
10a42ba8a66716063a6ba919eda93467a4c5f1bc4b95e844db54cd49c4e7eee8		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3159 23208 bytes
font_01_sfnt_off0000659f.bin
9d8c9ff8f23476e9e897d50e05ba1c89fe9a64794c9c08e4c2e4cb1c87253222		 pdf-font-stream PDF embedded font (sfnt) at offset 0x659F 18248 bytes

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