Malicious PDF — malware analysis report

Static analysis result for SHA-256 8f83a039a50a3967…

MALICIOUS

PDF

36.1 KB Created: 2021-05-22 13:21:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: c80726639cc6b5b674b0d9ca4e545c1d SHA-1: 6da5cf5ba33f84a9ed34e5bd6a2c11a41bccbc32 SHA-256: 8f83a039a50a3967b1883eb12094c9d6f7c224bbfd32af10d4dceceba1614c8a
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded links and a prominent call-to-action, identified as a 'ClickFix' social engineering attack. The document body and extracted URLs suggest a lure related to free in-game items or currency, such as Minecraft skins or Robux. The primary malicious URL points to a suspicious domain, likely serving as a landing page for a scam or malware distribution.

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/minecraft-skins-free-girl-game-hack PDF link annotation
    • https://elearning.mtsn2palembang.sch.id/__statics/gudangsoal/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2palembang.sch.id/__statics/gudangsoal/files/free-spins-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn2palembang.sch.id/__statics/gudangsoal/files/how-to-get-2021-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2palembang.sch.id/__statics/gudangsoal/files/free-robux-with-no-survey_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2palembang.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-2021_GM431946152.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_off0000346c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x346C 25000 bytes
SHA-256: 09ec7425e567a908401ee7715dc113241a0f21991a8182fd9cd6930f4bc9a658
font_01_sfnt_off00006d3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D3D 17812 bytes
SHA-256: 7ce5d1bffc067a7697c6659b9f16d2693dfb8cdcb2edfb00fbdf7ce9282af41c