Malicious PDF — malware analysis report

Static analysis result for SHA-256 8cdf8da5943a16ed…

MALICIOUS

PDF

38.0 KB Created: 2021-05-23 05:17:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 679ddf6ae5e7848738375e779d0abacb SHA-1: 88efa6bfd6a1e770e68d5e59ab79e4aa2a19dfbb SHA-256: 8cdf8da5943a16ed59dc3725edc0e34305cf60642fdd2dcfcb91b055dcb0520e
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs and a call-to-action phrase, indicating a social engineering attempt to trick the user into visiting a malicious website. The heuristic 'SE_CLICKFIX' suggests the document instructs the user to run commands, further supporting a malicious intent to bypass security measures. No scripts were extracted, but the overall pattern points to a phishing or scam lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

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-start-a-minecraft-server-for-free-game-hack PDF link annotation
    • https://mtsn1siak.com/__statics/gudangsoal/files/coin-master-free-spins-link-today-facebook_GM406889139.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/roblox-com-robux_GM431946152.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/how-to-get-free-robux-for-real_GM431946152.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/rbx-free-robux_GM431946152.pdfIn PDF document text
    • https://mtsn1siak.com/__statics/gudangsoal/files/free-coin-master-coins-and-spins_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
font_00_sfnt_off0000368a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x368A 27700 bytes
SHA-256: 471d9b9e15e5301f1f7824f048396d938f4ad56c7fb90d523d4a368bacb0ae97
font_01_sfnt_off00007443.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7443 17988 bytes
SHA-256: 4f50b9796c9c5e6e2841d90a47ce680cd3d0047611852497406c2f0c8cfa935a

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