Malicious PDF — malware analysis report

Static analysis result for SHA-256 d27072a583a3b00c…

MALICIOUS

PDF

31.6 KB Created: 2021-07-20 04:40:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 44cb81e7e50613e3a63135735c29fdcf SHA-1: 115ca0a79e5d1858bcaad633395ae372557321cf SHA-256: d27072a583a3b00cfd8dd0b33192ed4430ac5e6a6618061453b86e426523d695
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains multiple embedded URLs and a prominent call-to-action to download a tool related to game exploits. The ML classifier strongly flagged this PDF as malicious, and the presence of external URIs suggests an attempt to redirect the user to a malicious site. While no scripts were explicitly extracted, the document's structure and content indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

Heuristics 4

  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
  • 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/431946152/how-to-get-hacks-on-roblox-game-hack
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/was-minecraft-ever-free_GM479516143.pdf
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/free-robux-offers_GM431946152.pdf
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/rblx-gg-free-robux_GM431946152.pdf
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/free-tiktok-accounts-with-followers_GM835599320.pdf
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/how-to-get-minecraft-for-free-on-phone_GM479516143.pdf
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/minecraft-for-free-on-phone_GM479516143.pdf
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/coin-master-free-daily-spins-link_GM406889139.pdf
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/free-tiktok-fans_GM835599320.pdf
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdf
    • http://elearning.man1belitung.sch.id/__statics/gudangsoal/files/minecraft-java-free-trial_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000028fb.bin
2813b0d3f7e20e1a35a9d35b99b19c8bae4adf7b4b6a2dea45cf6a5b6d358122		 pdf-font-stream PDF embedded font (sfnt) at offset 0x28FB 21496 bytes
font_01_sfnt_off00005809.bin
d2de202f9aa25c491956fe63874a7d79bb7bc74997408c256f0bbf2d62c0ce59		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5809 18636 bytes

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