Malicious PDF — malware analysis report

Static analysis result for SHA-256 d80385c21f2b5b52…

MALICIOUS

PDF

41.5 KB Created: 2021-05-14 19:56:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 119f5555e4b545156a589313318a84b5 SHA-1: 723da5ceb70aaf577ff86184310a1f70384e80df SHA-256: d80385c21f2b5b52a4783ca78bdf86dbf80848fed02f757e08cb412c5330687a
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, forming a link farm, with the primary goal of directing users to game hack and cheat websites. The document body and extracted URLs suggest a lure for potentially unwanted or malicious software disguised as game cheats. While no scripts were directly extracted, the PDF structure and extensive external linking are indicative of a malicious campaign, likely involving a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://netcdn.xyz/app/406889139/free-coin-master-hacks-no-verification-game-hack
    • http://fortiusconsultancy.com/images/coin-master-daily-free-spins-link-app-download_GM406889139.pdf
    • http://fortiusconsultancy.com/images/coin-master-hack-version-2021-download_GM406889139.pdf
    • http://fortiusconsultancy.com/images/free-links-for-coin-master_GM406889139.pdf
    • http://fortiusconsultancy.com/images/how-to-get-free-robux-on-pc_GM431946152.pdf
    • http://fortiusconsultancy.com/images/coin-master-mod-version-free-download-2021_GM406889139.pdf
    • http://fortiusconsultancy.com/images/free-spins-coin-master-march-2021_GM406889139.pdf
    • http://fortiusconsultancy.com/images/coin-master-free-spins-link-hack_GM406889139.pdf
    • http://fortiusconsultancy.com/images/how-to-hack-coin-master-using-es-file_GM406889139.pdf
    • http://fortiusconsultancy.com/images/minecraft-free-no-virus_GM479516143.pdf
    • http://fortiusconsultancy.com/images/coin-master-hack-version-2021-free-download_GM406889139.pdf
    • http://fortiusconsultancy.com/images/coin-master-coins-hack_GM406889139.pdf
    • http://fortiusconsultancy.com/images/free-coin-master-spins-for-today_GM406889139.pdf
    • http://fortiusconsultancy.com/images/how-to-hack-into-someones-roblox-account_GM431946152.pdf
    • http://fortiusconsultancy.com/images/rbxfree-com-free-robux_GM431946152.pdf
    • http://fortiusconsultancy.com/images/roblox-free-rubox_GM431946152.pdf
    • http://fortiusconsultancy.com/images/coin-master-free-spins-link-without-human-verification_GM406889139.pdf
    • http://fortiusconsultancy.com/images/minecraft-for-free-on-phone_GM479516143.pdf
    • http://fortiusconsultancy.com/images/blogger-coin-master-free-spins_GM406889139.pdf
    • http://fortiusconsultancy.com/images/roblox-arsenal-hack_GM431946152.pdf
    • http://fortiusconsultancy.com/images/blogspot-free-spins-coin-master_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a52.bin
2df8502e152c98ef6051c4ecffe0ca8a599f97655cdd09ae44bacb130681bf57		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A52 23920 bytes
font_01_sfnt_off00008085.bin
22df04c4dacbc852f4ecaf83adb1826ed6293343c5161e377e09b669fc2092ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8085 18016 bytes

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