Malicious PDF — malware analysis report

Static analysis result for SHA-256 230e245af7791569…

MALICIOUS

PDF

41.6 KB Created: 2021-05-14 00:32:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 9147d9e1cdf62b34ecb63e7b7d63f1f2 SHA-1: 6d357fb9e1e6b808f75c85732467579add72dcf2 SHA-256: 230e245af7791569f5f51d7d2c26dd5b33304e17be410de3f1856e82f017d35f
102 Risk Score

Malware Insights

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

The PDF document contains numerous external links, many of which are hosted on suspicious domains and appear to be part of a link farm designed to lure users into downloading other files. The document body and extracted URLs suggest a scam related to game hacks (e.g., Coin Master, Roblox), indicating a phishing or social engineering attack. The ML classifier also flagged this PDF as malicious with high confidence.

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/coin-master-free-gifts-game-hack
    • https://www.gejovenlo.nl/images/hack-coin-master-343-apk_GM406889139.pdf
    • https://www.gejovenlo.nl/images/ww-roblox-come_GM431946152.pdf
    • https://www.gejovenlo.nl/images/coin-master-online-free-spin_GM406889139.pdf
    • https://www.gejovenlo.nl/images/download-hacked-games-com-coin-master_GM406889139.pdf
    • https://www.gejovenlo.nl/images/mcmaster-club-coin-master-hack_GM406889139.pdf
    • https://www.gejovenlo.nl/images/minecraft-windows-10-edition-hacked-client_GM479516143.pdf
    • https://www.gejovenlo.nl/images/free-coin-master-glitches_GM406889139.pdf
    • https://www.gejovenlo.nl/images/coin-master-free-daily-spins_GM406889139.pdf
    • https://www.gejovenlo.nl/images/how-to-get-robux-for-free-2021_GM431946152.pdf
    • https://www.gejovenlo.nl/images/free-roblox-generator_GM431946152.pdf
    • https://www.gejovenlo.nl/images/coin-master-free-coins-and-spins_GM406889139.pdf
    • https://www.gejovenlo.nl/images/how-can-you-get-free-robux_GM431946152.pdf
    • https://www.gejovenlo.nl/images/free-robux-hack-no-human-verification_GM431946152.pdf
    • https://www.gejovenlo.nl/images/free-coin-master-spins-2021-link_GM406889139.pdf
    • https://www.gejovenlo.nl/images/what-is-a-minecraft-client_GM479516143.pdf
    • https://www.gejovenlo.nl/images/free-minecraft-texture-packs-java_GM479516143.pdf
    • https://www.gejovenlo.nl/images/free-spins-coin-master-daily_GM406889139.pdf
    • https://www.gejovenlo.nl/images/minecraft-images-free_GM479516143.pdf
    • https://www.gejovenlo.nl/images/get-me-free-robux_GM431946152.pdf
    • https://www.gejovenlo.nl/images/coin-master-heaven-daily-free-spins_GM406889139.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000494f.bin
ee798cdd24aa9a8b44e079f8e558d8eecaa3dc4bc99044049af1a6be3f22bec8
pdf-font-stream PDF embedded font (sfnt) at offset 0x494F 26080 bytes
font_01_sfnt_off00008206.bin
401d56b29285354d6954c3c26e793cbeb56329cdc5209d9139ec018457d4ba23
pdf-font-stream PDF embedded font (sfnt) at offset 0x8206 17712 bytes