Malicious PDF — malware analysis report

Static analysis result for SHA-256 627c931037046670…

MALICIOUS

PDF

32.2 KB Created: 2021-07-20 03:10:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 924641fa0726cd600b8bfa843e6312c2 SHA-1: 8f7fd1dde47c1638c400fddb145a5fbcc70a1535 SHA-256: 627c931037046670e8ad2f8d941370049b40af6e7babc68e2e3094255dbb175c
100 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically advertising a "free Robux generator". The ML classifier also strongly indicated maliciousness. The presence of a visual download button further supports the lure. The document body and embedded links suggest a social engineering attempt to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/huskybus.com-free-robux-game-hack In PDF document text
    • http://www.dimalcco.com/images/minecraft-free-download-pc_GM479516143.pdfIn PDF document text
    • http://www.dimalcco.com/images/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://www.dimalcco.com/images/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://www.dimalcco.com/images/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://www.dimalcco.com/images/buy-robux-free_GM431946152.pdfIn PDF document text
    • http://www.dimalcco.com/images/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://www.dimalcco.com/images/free-robux-generator-no-human-verification-or-surveys_GM431946152.pdfIn PDF document text
    • http://www.dimalcco.com/images/minecraft-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • http://www.dimalcco.com/images/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.dimalcco.com/images/coin-master-daily-free-spins-link-app_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_off000027d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x27D0 22512 bytes
SHA-256: 2ccc7c3d6272dbd1f714fda35f9ec9526610c9d58198f68ccb25c77b7e0b9203
font_01_sfnt_off00005a24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5A24 18876 bytes
SHA-256: 9402df10522a16d1b141ff55a22266ea3271231ec0f53b3ff36f088be41357ce

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