Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4660001a111862f…

MALICIOUS

PDF

35.5 KB Created: 2021-07-05 04:49:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: ef6cf07e596d17eb2e8edb9a68e1dbd3 SHA-1: ecf6e52defb57a665b2de92de0124ecc88186c73 SHA-256: c4660001a111862f83dc885ab0ee9beced126e679bb9d2c3abe0cc66dc8696bf
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The document contains a lure for free game items and a direct link to a suspicious URL, indicating a phishing or malware distribution attempt. The presence of 'cmd_GM431946152.pdf' suggests potential command execution or a dropped payload. The ML classifier strongly flagged this PDF as malicious, supporting the assessment of a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • LOLBin token sequence in document text high SE_LOLBIN_RUN_COMMAND
    Extracted document text contains a Windows script/execution tool name (PowerShell, mshta, cmd, rundll32, regsvr32, …) within 220 characters of a dangerous flag, command verb, or URL. This is a visible 'run this' instruction in HTML/PDF/RTF lure bodies, or — in macro-laden Office files — the macro's own string-pool entries appearing adjacent in extracted text.
  • 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 http://netcdn.tw/app/479516143/free-minecraft-windows-10-account-game-hack
    • http://lib.bppsdmp.pertanian.go.id/main/repository/coin-master-free-pin_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/roblox-robux-hack-tutorial_GM431946152.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/how-to-gat-robux-for-free-ona-webcite_GM431946152.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/coin-master-online_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/coin-master-free-spins-1-coin-master_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/coin-master-daily-free-spins-link-today-blog_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/how-to-get-free-robux-without-downloading-apps_GM431946152.pdf
    • http://lib.bppsdmp.pertanian.go.id/main/repository/pubg-4-uccom_GM1330123889.pdf
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/free-robux-hack-no-human-verification_GM431946152.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/free-spin-link_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/roblox-hack-ga_GM431946152.pdf
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/coin-master-hack-without-human-verification-2021_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/kupang/repository/pokemon-go-free-864_GM1094591345.pdf
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/roblox-speed-hack-2021-download_GM431946152.pdf
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/free-robux-fun_GM431946152.pdf
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/coin-master-hack-ios-download-2021_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/coin-master-hack-tool-v1-9-apk_GM406889139.pdf
    • http://lib.bppsdmp.pertanian.go.id/main/repository/how-to-get-free-robux-using-cmd_GM431946152.pdf
    • http://lib.bppsdmp.pertanian.go.id/ciawi/repository/how-to-get-free-robux-on-roblox-on-a-phone_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000033e1.bin
8728512bc39b86819bf79008aa762518652522293a7935b1c0e91b43a07bb8d8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x33E1 22444 bytes
font_01_sfnt_off000065fa.bin
26d2b63b5a18efab6c4940dc4924ef6e0265af068ca8e87d0d09cb70c9337e2d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x65FA 18952 bytes

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