Malicious PDF — malware analysis report

Static analysis result for SHA-256 442a29b9217ca2de…

MALICIOUS

PDF

46.4 KB Created: 2021-05-12 22:56:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 66c3c005ab7f3df6e5fd5943d59cc582 SHA-1: 856dfaadd80b2a157f19adbf760a34453c950960 SHA-256: 442a29b9217ca2deedc78e6bd67f81ca94221bc22bf7e99ef41230af85fdd445
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains a lure for free items, indicated by the 'free-roblox-clothes-2021-game-hack' URL and the 'SE_PAYMENT_REDIRECT_LURE' heuristic. The presence of embedded URLs and the ML classifier's high confidence score suggest malicious intent, likely to redirect users to a site that downloads a secondary payload. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

Heuristics 4

  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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/free-roblox-clothes-2021-game-hack
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/free-coin-master-coins_GM406889139.pdf
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/freerobuxhack-us-2021_GM431946152.pdf
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-windows-10-for-free_GM479516143.pdf
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/minecraft-modded-client_GM479516143.pdf
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/free-coin-master-spins-link-download_GM406889139.pdf
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/coin-master-free-foxy-food_GM406889139.pdf
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/do-you-get-minecraft-windows-10-for-free_GM479516143.pdf
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/free-coin-master-spins-2021_GM406889139.pdf
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/how-to-sue-roblox_GM431946152.pdf
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/coin-master-pc-hack-tool_GM406889139.pdf
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/free-spins-link-in-coin-master-2021_GM406889139.pdf
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/free-coins-for-coin-master_GM406889139.pdf
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/coin-master-pro-hack_GM406889139.pdf
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/free-robux-no-verification-at-all_GM431946152.pdf
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/free-robux-pin-codes_GM431946152.pdf
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/coin-master-hack-no-human-verification_GM406889139.pdf
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/roblox-games-free_GM431946152.pdf
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/coin-master-unlimited-spin-link_GM406889139.pdf
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/how-to-make-your-own-minecraft-server-for-free_GM479516143.pdf
    • http://elearning.miriyadlussholihien.sch.id/__statics/gudangsoal/files/earn-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004d11.bin
796580e2c751953cde5582acc53bcbd0f62b5e35b67f55d2442a12cc6e5bef4c		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D11 25224 bytes
font_01_sfnt_off000087b7.bin
106de1d187d148d03f5c34a802444a7e62d93662ddf359d17cd55770c6c16081		 pdf-font-stream PDF embedded font (sfnt) at offset 0x87B7 2880 bytes
font_02_sfnt_off000091a7.bin
252330d33e31022fb4da09489f6402f078bd49276604afcef68628ac91e42d16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x91A7 18620 bytes

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