Malicious PDF — malware analysis report

Static analysis result for SHA-256 fd9f0c25cc9095b0…

MALICIOUS

PDF

33.3 KB Created: 2021-06-29 19:35:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 73f08ab1cd25f45446636926b0a2bf60 SHA-1: 20cecb8f27b1880bb0e103ce0ce64a56daa5c43e SHA-256: fd9f0c25cc9095b011d3cf17686538359a22eab3e44108b18ab28ff840951f6b
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are SEO-optimized PDFs related to game hacks and cheats. The presence of a direct download URL and the ML classifier's high confidence score indicate a malicious intent to deliver a payload or redirect users to a malicious site. The document body, while containing garbled text, includes the primary malicious URL, reinforcing the lure.

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/best-roblox-hacks-site-game-hack PDF link annotation
    • https://www.astrospace.com.tw/upload/files/coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://www.astrospace.com.tw/upload/files/how-to-get-free-headphones-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.astrospace.com.tw/upload/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://www.astrospace.com.tw/upload/files/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • https://www.astrospace.com.tw/upload/files/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.astrospace.com.tw/upload/files/roblox-free-online-without-download_GM431946152.pdfIn PDF document text
    • https://www.astrospace.com.tw/upload/files/rbx-com_GM431946152.pdfIn PDF document text
    • https://www.astrospace.com.tw/upload/files/roblox-spiderman-package-full-suit-free_GM431946152.pdfIn PDF document text
    • https://www.astrospace.com.tw/upload/files/roblox-group-free-robux_GM431946152.pdfIn PDF document text
    • https://www.astrospace.com.tw/upload/files/tiktok-for-free_GM835599320.pdfIn PDF document text
    • https://www.astrospace.com.tw/upload/files/free-robux-codes-that-work-2021_GM431946152.pdfIn PDF document text
    • https://www.astrospace.com.tw/upload/files/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • https://www.astrospace.com.tw/upload/files/dantdm-free-robux-code_GM431946152.pdfIn PDF document text
    • https://www.astrospace.com.tw/upload/files/how-to-get-free-tiktok-followers-without-downloading-apps_GM835599320.pdfIn PDF document text
    • https://www.astrospace.com.tw/upload/files/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.astrospace.com.tw/upload/files/hacking-roblox-with-code-noclip-windows-7_GM431946152.pdfIn PDF document text
    • https://www.astrospace.com.tw/upload/files/how-to-hack-roblox-account-step-by-step_GM431946152.pdfIn PDF document text
    • https://www.astrospace.com.tw/upload/files/free-robux-cards_GM431946152.pdfIn PDF document text
    • https://www.astrospace.com.tw/upload/files/coin-master-hack-ios-2021_GM406889139.pdfIn PDF document text
    • https://www.astrospace.com.tw/upload/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002da0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DA0 21824 bytes
SHA-256: c6d8233ec1827c927f163b03aa6b9df58579ce3184353c1cf87c9c08e0f093cd
font_01_sfnt_off00005d94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D94 18880 bytes
SHA-256: 06ba91b69eef10fbefef0f485342c1d0d115338cacfd67a9a51156cf5db0a645

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