Malicious PDF — malware analysis report

Static analysis result for SHA-256 0aec68733ca0c764…

MALICIOUS

PDF

36.2 KB Created: 2021-05-21 16:44:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: d85891a8472fef68025541815f70c2e5 SHA-1: ea68ee2f207dec42aaa0c6e0e9adaef23c0251c0 SHA-256: 0aec68733ca0c764ee15e39d2166059f1fee4f6b24204334895f83c16fd5a0f0
82 Risk Score

Malware Insights

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

The PDF document uses social engineering tactics, specifically a "ClickFix" lure, to trick users into executing commands or visiting malicious URLs. The document body and embedded URLs suggest an attempt to deliver a game hack, which is a common pretext for malware distribution. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9508

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/minecraft-tower-defense-2-hacked-game-hack
    • https://elearning-min2jakpus.sch.id/__statics/gudangsoal/files/free-minecraft-survival-server_GM479516143.pdf
    • https://www.elearning-min2jakpus.sch.id/__statics/gudangsoal/files/how-to-get-free-spins-and-coins-on-coin-master_GM406889139.pdf
    • https://www.elearning-min2jakpus.sch.id/__statics/gudangsoal/files/coin-master-unlimited-free-spins_GM406889139.pdf
    • https://www.elearning-min2jakpus.sch.id/__statics/gudangsoal/files/roblox-hack-me_GM431946152.pdf
    • https://www.elearning-min2jakpus.sch.id/__statics/gudangsoal/files/free-coin-spin_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000342f.bin
69f9bde5ee099ebde324175be188d4a49a03c648a01d7466460b31291c348f58		 pdf-font-stream PDF embedded font (sfnt) at offset 0x342F 24536 bytes
font_01_sfnt_off00006b57.bin
dfa7fded366e42e453bad8f972622469f3be5fd523f8d87af1dd357da012015d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B57 18508 bytes

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