Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5111549a6e7d2c8…

MALICIOUS

PDF

38.9 KB Created: 2021-05-21 03:18:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 3190b31f96e21487ceabcb58cc4c5141 SHA-1: 2357bfeea249dab8788fc5de599ff4423146162c SHA-256: e5111549a6e7d2c8560e53838b43854eaf40b99ed386e1ac2075e6161f9ba227
62 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs, one of which points to a 'wurst-hacked-client' download. The document body also includes a 'CLICK HERE TO ACCESS MINECRAFT GENERATOR' call to action, indicating a lure for potentially malicious software. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9476

Heuristics 4

  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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/minecraft-wurst-hacked-client-game-hack PDF link annotation
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/how-do-we-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/coin-master-heaven-free-spins-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spin-and-coin_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/coin-master-free-in-app-purchases_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn1wonogiri.sch.id/__statics/gudangsoal/files/how-to-get-free-hats-on-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off000035cf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x35CF 29176 bytes
SHA-256: 736b306b8e9b72c85adeb7ef9e7d9de5bebcaf66f6f6ba534eaeb99103e936d1
font_01_sfnt_off0000770f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x770F 18324 bytes
SHA-256: 7137e4e2e9658b649895b635d5af54e9ac78bb5b6b308aaf2a8e981e2e5df966

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