Malicious PDF — malware analysis report

Static analysis result for SHA-256 437a17a75e31e327…

MALICIOUS

PDF

36.3 KB Created: 2021-05-22 07:07:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: e5682e518ec51ebd8867f1fe8e45c466 SHA-1: 7cd616e0dde2be8fd4aadc192299ae0673a7c8c2 SHA-256: 437a17a75e31e3271b9a99e7a3c7448a85fb907be7e57c3c34232c316bb6d9b0
82 Risk Score

Malware Insights

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

The PDF document contains heuristics indicating it is malicious and uses a payment redirection lure, suggesting a scam. The document body and embedded links promote a 'free Robux' hack, which is a common lure for phishing or malware distribution. The primary URL, https://netcdn.xyz/app/431946152/free-robux-group-game-hack, is likely the destination for the malicious payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

Heuristics 4

  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise pattern
  • 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/431946152/free-robux-group-game-hack
    • http://initiatiev.nl/images/free-robux-reddit_GM431946152.pdf
    • http://initiatiev.nl/images/how-to-hack-in-roblox-prison-life_GM431946152.pdf
    • http://initiatiev.nl/images/coin-master-free-spins-2021_GM406889139.pdf
    • http://initiatiev.nl/images/minecraft-java-code-free_GM479516143.pdf
    • http://initiatiev.nl/images/how-to-get-free-robux-in-2021_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000030fd.bin
57806022622fb06e9693f28acba6dba4443176fafb1485261c482a2767f3ca78
pdf-font-stream PDF embedded font (sfnt) at offset 0x30FD 25864 bytes
font_01_sfnt_off00006cfa.bin
388213afa323ee085de7e38d37e80f389e12e91d2d5a1b35e5038c11a526558f
pdf-font-stream PDF embedded font (sfnt) at offset 0x6CFA 18192 bytes