Malicious PDF — malware analysis report

Static analysis result for SHA-256 e16cf08f4501877f…

MALICIOUS

PDF

42.0 KB Created: 2021-05-10 20:37:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 982274921ae98283d31e16697a9cc59b SHA-1: 744e3aaf1d99be7fb195d571b5a0db4477fc6c2e SHA-256: e16cf08f4501877fe0267b8ac5f217373439b5cfeeefad308348e44eb6aa4198
102 Risk Score

Malware Insights

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

The PDF contains numerous external links, many with SEO-like slugs, suggesting a link farm designed to lure users to download content. The ML classifier strongly indicated maliciousness, and the presence of a download button heuristic further supports a malicious workflow. The primary URL, https://netcdn.xyz/app/406889139/spin-and-coin-game-hack, likely serves as the initial lure for a malicious download.

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/spin-and-coin-game-hack
    • https://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/minecraft-bedrock-edition-free-with-java_GM479516143.pdf
    • http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/roblox-hack-download_GM431946152.pdf
    • http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/free-coins-coin-master-blog_GM406889139.pdf
    • https://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link_GM406889139.pdf
    • http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/free-coins-and-spins-in-coin-master_GM406889139.pdf
    • http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdf
    • https://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/roblox-generator-com_GM431946152.pdf
    • http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/can-you-get-minecraft-windows-10-for-free_GM479516143.pdf
    • http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/coin-master-hack-version-2021-free-download_GM406889139.pdf
    • http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/coin-master-app-for-free-spins_GM406889139.pdf
    • http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-generator_GM406889139.pdf
    • http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/how-to-get-free-cards-sets-for-coin-master_GM406889139.pdf
    • http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/minecraft-hack-client-18-9_GM479516143.pdf
    • https://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/free-robux-for-kids-no-verification_GM431946152.pdf
    • https://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/microsoft-bing-free-robux_GM431946152.pdf
    • http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/free-coin-master-coins-and-spins_GM406889139.pdf
    • http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/lazyblocks-com-free-robux_GM431946152.pdf
    • http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/hack-crack-for-coin-master-currency_GM406889139.pdf
    • http://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/robux-online_GM431946152.pdf
    • https://elearning.mtsn1banjarnegara.sch.id/__statics/gudangsoal/files/all-coin-master-spin-link-and-free-download_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b1b.bin
fdc203c83364b4d025a91aac104839d533ccc905ed39c058d4e3d7d4f08ab649		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B1B 25116 bytes
font_01_sfnt_off000083ff.bin
1aa6e9a1125ffd8bd76459eac5be06ac3adbb2b38f3f38867c691e3d452af4d4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83FF 17564 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.