Malicious PDF — malware analysis report

Static analysis result for SHA-256 289cc0040b99659e…

MALICIOUS

PDF

33.7 KB Created: 2021-06-25 12:23:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: d320ac647b99aa11d780fb23b8a7e78b SHA-1: 357c39849ec7165d7e90922e35796a5de6b12459 SHA-256: 289cc0040b99659e6926149f5628f75e5f4fdea928e0587a58758caa8c30af1e
102 Risk Score

Malware Insights

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

The PDF document contains numerous embedded URLs and a heuristic firing for a PDF link farm, indicating an attempt to direct users to external resources. The document body and extracted URLs suggest a lure related to game hacks and cheats, likely to trick users into downloading further malicious content. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation 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 http://netcdn.co/app/431946152/hao-hack-roblox-game-hack PDF link annotation
    • https://miraller.com/upload/files/how-to-hack-someone-on-roblox_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/freespinandcoin-blogspot_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/roblox-synapse-free-download-2021-feb_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • https://miraller.com/upload/files/get-coin-master-spins-free_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/can-i-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://miraller.com/upload/files/roblox-exploit-scripts_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/levvvel-coin-master_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-stop-attack-hack_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/minecraft-cheats-pc-2021_GM479516143.pdfIn PDF document text
    • https://miraller.com/upload/files/how-do-you-send-a-roblox-fottage-of-someone-hacking_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-free-spins-hack_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/roblox-ftw_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/cheap-roblox-super-power-training-simulator-hack_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/free-spins-coin-master-ios-links_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://miraller.com/upload/files/how-to-get-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://miraller.com/upload/files/free-catalog-items-roblox-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
font_00_sfnt_off00002dbe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DBE 22324 bytes
SHA-256: 86dc4eccff8361e451010b3ef594d47b0651b721409131cb0821e9ba2646736c
font_01_sfnt_off00005f78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F78 18656 bytes
SHA-256: 5a0e243569cb65195461a5a725a20b8b9aa7ef32d37dbe228534a1dd37b147c5

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