Malicious PDF — malware analysis report

Static analysis result for SHA-256 edecb7225490b040…

MALICIOUS

PDF

45.3 KB Created: 2021-05-12 07:30:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: bced3136f74b634f3d9f232f0b09c067 SHA-1: 503307b0ab1726ed9a45ab9b05b98b94976cb9bb SHA-256: edecb7225490b04082dfe419097689987c414ceac446eab9518a27d9ddd2687c
102 Risk Score

Malware Insights

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

The PDF document contains a mass of external links, many of which are disguised as PDF files themselves, pointing to websites offering game-related cheats and hacks. The ML classifier strongly flagged this PDF as malicious, and the presence of numerous SEO-optimized links suggests a link farm designed to drive traffic to potentially harmful content. The document's content and embedded links indicate a lure for users seeking in-game advantages, which often leads to malware or scams.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9551

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/toolbox-for-minecraft-pe-game-hack
    • http://www.brtes.com/images/coin-master-free-daily-spins-link_GM406889139.pdf
    • http://www.brtes.com/images/free-robux-gift-card-codes_GM431946152.pdf
    • http://www.brtes.com/images/games-like-coin-master-for-free_GM406889139.pdf
    • http://www.brtes.com/images/minecraft-free-play-now_GM479516143.pdf
    • http://www.brtes.com/images/coin-master-fan_GM406889139.pdf
    • http://www.brtes.com/images/how-to-get-free-robux-promo-codes_GM431946152.pdf
    • http://www.brtes.com/images/how-you-get-robux_GM431946152.pdf
    • http://www.brtes.com/images/coin-master-hack-without-verify_GM406889139.pdf
    • http://www.brtes.com/images/free-robux-no-human-verification-or-survey-2021_GM431946152.pdf
    • http://www.brtes.com/images/coin-master-free-spins-23-march-2021_GM406889139.pdf
    • http://www.brtes.com/images/coin-master-spins-gratis_GM406889139.pdf
    • http://www.brtes.com/images/free-coins-and-spins-for-coin-master_GM406889139.pdf
    • http://www.brtes.com/images/how-to-get-roebucks-in-roblox_GM431946152.pdf
    • http://www.brtes.com/images/rich-free-roblox-accounts_GM431946152.pdf
    • http://www.brtes.com/images/toolbox-for-minecraft-windows-10_GM479516143.pdf
    • http://www.brtes.com/images/free-spins-coin-master-generator_GM406889139.pdf
    • http://www.brtes.com/images/free-robux-hack_GM431946152.pdf
    • http://www.brtes.com/images/get-free-spins-for-coin-master_GM406889139.pdf
    • http://www.brtes.com/images/how-to-hack-coin-master-game-without-verification_GM406889139.pdf
    • http://www.brtes.com/images/free-robux-no-human-verification-or-survey_GM431946152.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a33.bin
c955d015db2f4029bee4c892016489a67da67708c07913e102e857250440d7ea
decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A33 25644 bytes
font_01_sfnt_off000084e3.bin
61b3a573627d4f03d30684157e1627da3b4499cefab0fdf17b45999135b0250b
pdf-font-stream PDF embedded font (sfnt) at offset 0x84E3 2824 bytes
font_02_sfnt_off00008e8a.bin
cad0c1d0267ccf17e6d6e466e5a8f19958f4fbf249f5d0def9b4b0a3839f8161
pdf-font-stream PDF embedded font (sfnt) at offset 0x8E8A 18308 bytes