Malicious PDF — malware analysis report

Static analysis result for SHA-256 526766e22173bd8e…

MALICIOUS

PDF

45.4 KB Created: 2021-05-12 21:31:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 5ece1182f1486e1b183f35ba19a77420 SHA-1: 6bbea7f387bbf4f18ed47719e05c6b9e69ec2c68 SHA-256: 526766e22173bd8e2661f7189b08258ac8152d7cef436a54b421019483c2295c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The document body and embedded links suggest a lure related to game hacking or cheats, likely to drive traffic to these external sites. The ML_NYX_PDF_MALICIOUS heuristic further supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/se-puede-hackear-coin-master-game-hack
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/free-robux-codes-2021-not-used_GM431946152.pdf
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdf
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/coin-master-rewards-free-spins_GM406889139.pdf
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/coin-master-hack-version-2021-free-download_GM406889139.pdf
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/how-to-hack-coin-master-with-game-guardian_GM406889139.pdf
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/coin-master-free-coins-and-spins-app_GM406889139.pdf
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/coin-master-free-spins-apk_GM406889139.pdf
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/free-roblox-girl-hair-not-a-model_GM431946152.pdf
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/get-roblox-for-free_GM431946152.pdf
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/free-robux-glitch-2021_GM431946152.pdf
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/free-spins-on-coin-master-2021_GM406889139.pdf
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/how-to-make-a-minecraft-bedrock-server-for-free_GM479516143.pdf
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/free-robux-hack_GM431946152.pdf
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/get-free-robux-com_GM431946152.pdf
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/coin-master-guide-to-free-spins-and-rewards_GM406889139.pdf
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/client-minecraft_GM479516143.pdf
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/free-coin-master-spins-and-coins_GM406889139.pdf
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/how-to-get-free-hair-on-roblox_GM431946152.pdf
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/free-spins-on-coin-master_GM406889139.pdf
    • https://elerning.mtsn1lampungtimur.com/__statics/gudangsoal/files/how-to-get-free-robux-without-doing-anything_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004c9e.bin
7591f052da8a3dca62f1f9461ca63d0b312fd29c8b74f59967747b7a0ec8effd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4C9E 24752 bytes
font_01_sfnt_off00008586.bin
3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8586 2840 bytes
font_02_sfnt_off00008f37.bin
52a96ef7ba39a26893895b90e9b4f2c5af116e165a9a1008a5be9b99a8a362cf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F37 18184 bytes

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