Malicious PDF — malware analysis report

Static analysis result for SHA-256 7907dd7abf75e193…

MALICIOUS

PDF

33.6 KB Created: 2021-07-05 17:20:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: e9e75cbdafc853baf9d7cf4f3c7cb8f7 SHA-1: dc0eacee94b83fb121a7516035a50ba80d2c491f SHA-256: 7907dd7abf75e193d6a4a88f3e9a088c71f87b65f66db6d15674a6be0a917aab
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains numerous embedded URLs that form a link farm, directing users to sites offering game hacks and free currency. The primary URL, http://netcdn.tw/app/431946152/funbloxxyz-free-robux-game-hack, is presented as a lure for free Robux. This suggests a phishing or scam attempt designed to trick users into downloading further malicious content or visiting compromised sites.

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.tw/app/431946152/funbloxxyz-free-robux-game-hack PDF link annotation
    • https://library.elkatarie.ac.id/repository/minecraft-free-download-ios_GM479516143.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/holiday-crown-roblox-free_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/destroy-walls-in-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/ant-man-helmet-roblox-free_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-robux-giver-free-download_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/hacks-for-phantom-forces-roblox_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-code-de-triche-gratuit-free_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-money-cheats-that-work_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/real-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/202100-robux-promo-code-free_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-hack-com_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-how-to-hack-into-someones-account-2021_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-planet-free-robux_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-spins-and-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/rbxoffer-com-free-robux_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_off00002d7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D7C 21916 bytes
SHA-256: dea16b30edd8c4380712ddb010be79a945dcf68b13a8f6feb74f4bb04681c6cf
font_01_sfnt_off00005dfa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5DFA 19052 bytes
SHA-256: b8da4c12b443ea16a452d57305b0b851670a4d0bed79603d1953fd1acd138761

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