Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e496b1a3900368a…

MALICIOUS

PDF

38.1 KB Created: 2021-05-21 02:26:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 4048220ee1e5cebc5c9efa81034f9477 SHA-1: 52427bd70bfa6ee534c7e862ecc6a3e04cd83f8a SHA-256: 7e496b1a3900368ac108090a5612ce300b95993db6305a7b0849ef76bbd6c8f4
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and text lures related to "free Robux" and "game hacks", indicating a phishing or scam attempt. The presence of a visual download button and callback lure heuristics further supports this. While no scripts were explicitly extracted, the ML classifier flagged the PDF as malicious, and the overall content suggests a social engineering attack designed to trick users into visiting malicious sites or downloading further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9407

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 https://netcdn.xyz/app/431946152/how-to-actually-get-free-robux-game-hack PDF link annotation
    • http://w-i-r.de/images/download-coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://w-i-r.de/images/robux-hack-2021_GM431946152.pdfIn PDF document text
    • http://w-i-r.de/images/roblox-free-clothes-codes_GM431946152.pdfIn PDF document text
    • http://w-i-r.de/images/how-to-hack-roblox-accounts-on-phone-2021_GM431946152.pdfIn PDF document text
    • http://w-i-r.de/images/coin-master-redeem-code-free_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_off0000330d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x330D 27480 bytes
SHA-256: 6c143c28fdcd1a601fe4ae92e8913c50b8a920b519e775eb14eee41e9eb15ad9
font_01_sfnt_off00007242.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7242 18764 bytes
SHA-256: 380379838da7ba69723634981f8e24f026256aff947d3d13a6d99450b2ab0cc3

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