Malicious PDF — malware analysis report

Static analysis result for SHA-256 507b25710213d200…

MALICIOUS

PDF

45.8 KB Created: 2021-06-07 19:36:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: fab09dc889990533f3f7b46f6576dded SHA-1: 63974cc78fa410d382e4bad1c29561608bd112e9 SHA-256: 507b25710213d2008d5d96468be5f8071ee4528f0106afe7f36728afe0907feb
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains multiple embedded URLs and a prominent external URI pointing to sites offering game-related cheats, indicating a lure for users to download potentially malicious files. The presence of a 'password-protected archive' lure suggests an attempt to bypass security measures by encrypting the payload. The ML classifier also flagged this PDF as malicious with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9797

Heuristics 4

  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.tw/app/431946152/hack-notoriety-roblox-game-hack
    • http://safwafurniture.com/images/free-robux-generator-codes_GM431946152.pdf
    • http://safwafurniture.com/images/free-spins-coin-master-hack-2021_GM406889139.pdf
    • http://safwafurniture.com/images/hack-coin-master-no-human-verification_GM406889139.pdf
    • http://safwafurniture.com/images/free-robux-website-that-works_GM431946152.pdf
    • http://safwafurniture.com/images/how-to-log-out-of-coin-master_GM406889139.pdf
    • http://safwafurniture.com/images/free-coins-for-coin-master_GM406889139.pdf
    • http://safwafurniture.com/images/blox-fish-free-robux_GM431946152.pdf
    • http://safwafurniture.com/images/free-game-packs-for-coin-master_GM406889139.pdf
    • http://safwafurniture.com/images/free-robux-no-verify_GM431946152.pdf
    • http://safwafurniture.com/images/coin-master-hack-apk-free-download_GM406889139.pdf
    • http://safwafurniture.com/images/free-robux-come_GM431946152.pdf
    • http://safwafurniture.com/images/get-free-spins-coin-master_GM406889139.pdf
    • http://safwafurniture.com/images/get-free-robux-no-verification_GM431946152.pdf
    • http://safwafurniture.com/images/free-coin-master-cards_GM406889139.pdf
    • http://safwafurniture.com/images/free-robux-glitch-2021_GM431946152.pdf
    • http://safwafurniture.com/images/hack-spin-coin-master-2021_GM406889139.pdf
    • http://safwafurniture.com/images/mega-hack-roblox_GM431946152.pdf
    • http://safwafurniture.com/images/spin-hack-for-coin-master_GM406889139.pdf
    • http://safwafurniture.com/images/minecraft-free-version_GM479516143.pdf
    • http://safwafurniture.com/images/wahoogaming-co-free-robux_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off00004e38.bin
f01216a75652919e47ae0d2c5c8fa98ea63a6d27eb74c375132f2952f4801cfe		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E38 24088 bytes
font_01_sfnt_off0000853d.bin
a66b570a908761b39e6d9e18bcb667c353840a86c6a7db528f79d01abe6b23a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x853D 2844 bytes
font_02_sfnt_off00008ee4.bin
22fd056fad52436d551067437d3ce5e5f9adbd2c921f9fed4f2f97340cb3ef64		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8EE4 18584 bytes

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