Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca6c392f64f9d26b…

MALICIOUS

PDF

36.3 KB Created: 2021-05-21 10:31:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 628892b2ed5496f2b5451d3a408c7b52 SHA-1: 8c75999b000074e3652f52530a3e8afcf3c002d8 SHA-256: ca6c392f64f9d26b761faa33a5cf85bf062eb6d4218053f1faac3084d6cce157
82 Risk Score

Malware Insights

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

The PDF contains a prominent link disguised as a Minecraft hack download, which is a common social engineering lure. The heuristic 'SE_CLICKFIX' indicates the document likely instructs the user to execute a command, further supporting a malicious intent to trick the user into running a payload. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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-to-get-minecraft-for-free-on-android-game-hack PDF link annotation
    • http://www.laborvetro.org/images/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
    • http://www.laborvetro.org/images/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://www.laborvetro.org/images/free-robux-mobile_GM431946152.pdfIn PDF document text
    • http://www.laborvetro.org/images/coin-master-free-link-blogspot_GM406889139.pdfIn PDF document text
    • http://www.laborvetro.org/images/download-coin-master-hack-mod-apk_GM406889139.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_off00003515.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3515 24736 bytes
SHA-256: afd0cf308e0d04537508ab06d3af8f1b7bdc0c35742f34ec4aff6c0297cd9933
font_01_sfnt_off00006d2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D2E 18048 bytes
SHA-256: 8059851acc98585c267d1a0730441da2490f7a27bb6efaac05b05bf58a4bb166

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