Malicious PDF — malware analysis report

Static analysis result for SHA-256 97ed70e2e66c777b…

MALICIOUS

PDF

42.6 KB Created: 2021-05-16 07:37:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 1bd86b11f9d840af81d1ec04915bfd40 SHA-1: fc77f7bd4d377346a75d0450e046e9fc3da3fa67 SHA-256: 97ed70e2e66c777b11dcc4270872ff470bb5627a794b4584965dbce123779fa0
102 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are structured as SEO-optimized links pointing to game-related cheats and downloads. The document body and extracted URLs suggest a lure for users seeking free game downloads or hacks, which is a common tactic for distributing malware. The ML classifier also strongly indicated maliciousness.

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/479516143/minecraft-pe-free-download-android-game-hack
    • http://modenese.net/images/coin-master-free-spins-cheat-deutsch_GM406889139.pdf
    • http://modenese.net/images/minecraft-bedrock-hacks-windows-10_GM479516143.pdf
    • http://modenese.net/images/coin-master-free-spins-and-free-coins_GM406889139.pdf
    • http://modenese.net/images/roebucks-on-roblox_GM431946152.pdf
    • http://modenese.net/images/coin-master-mod-version-free-download_GM406889139.pdf
    • http://modenese.net/images/mobihack-roblox-hack_GM431946152.pdf
    • http://modenese.net/images/free-robux-codes-no-human-verification_GM431946152.pdf
    • http://modenese.net/images/coin-master-rare-cards-hack_GM406889139.pdf
    • http://modenese.net/images/free-robux-only-username-no-human-verification_GM431946152.pdf
    • http://modenese.net/images/how-to-hack-robux_GM431946152.pdf
    • http://modenese.net/images/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://modenese.net/images/easy-way-to-get-free-robux_GM431946152.pdf
    • http://modenese.net/images/sites-to-get-free-robux_GM431946152.pdf
    • http://modenese.net/images/robux-free-c_GM431946152.pdf
    • http://modenese.net/images/how-to-cheat-in-roblox_GM431946152.pdf
    • http://modenese.net/images/hack-coin-master-spin-apk_GM406889139.pdf
    • http://modenese.net/images/coin-master-hack-version_GM406889139.pdf
    • http://modenese.net/images/free-robux-hack-no-verification_GM431946152.pdf
    • http://modenese.net/images/free-spins-coin-master-links-app_GM406889139.pdf
    • http://modenese.net/images/adopt-me-roblox-hacks_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a52.bin
480a94bb298db42ca08614804080682923e198d5e0f41f283deab580270211f0		 decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A52 26048 bytes
font_01_sfnt_off000083e2.bin
5a97249ab99b3f405ba8447d6660054b6d961bf679fd2328fdd0c5e86c70ec7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83E2 18444 bytes

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