Malicious PDF — malware analysis report

Static analysis result for SHA-256 fe48dc188ea88987…

MALICIOUS

PDF

34.9 KB Created: 2021-07-03 13:51:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7)
MD5: 2745df3135711dc03edb0e03162b3be8 SHA-1: 7c6f1101eaea227b783b3b057ace464811c7e114 SHA-256: fe48dc188ea889872f089c9cd364c6ba579cac71333b93a5773f357993d77705
102 Risk Score

Malware Insights

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

The PDF document contains a large number of 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 files. The ML classifier strongly indicated maliciousness, and the presence of a visual download button further supports a deceptive user interaction pattern. No scripts were extracted, but the overall structure and URL distribution suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-blogspot-game-hack
    • https://www.dc-itsolutions.com/userfiles/files/download-minecraft-java-edition-free_GM479516143.pdf
    • https://www.dc-itsolutions.com/userfiles/files/coin-master-free-spin-sites_GM406889139.pdf
    • https://www.dc-itsolutions.com/userfiles/files/huskybuscom-free-robux_GM431946152.pdf
    • https://www.dc-itsolutions.com/userfiles/files/can-you-make-a-minecraft-server-for-free_GM479516143.pdf
    • https://www.dc-itsolutions.com/userfiles/files/how-to-get-free-admin-in-roblox-prison-life_GM431946152.pdf
    • https://www.dc-itsolutions.com/userfiles/files/how-to-get-free-robux-for-free_GM431946152.pdf
    • https://www.dc-itsolutions.com/userfiles/files/free-coin-and-spin-link_GM406889139.pdf
    • https://www.dc-itsolutions.com/userfiles/files/coin-master-free-cards-link_GM406889139.pdf
    • https://www.dc-itsolutions.com/userfiles/files/hack-noclimb-roblox-2021-marzo_GM431946152.pdf
    • https://www.dc-itsolutions.com/userfiles/files/coin-master-free-blogspot_GM406889139.pdf
    • https://www.dc-itsolutions.com/userfiles/files/coin-master-free-spins-and-coins-daily_GM406889139.pdf
    • https://www.dc-itsolutions.com/userfiles/files/roblox-how-to-increase-speed-using-cheat-engine_GM431946152.pdf
    • https://www.dc-itsolutions.com/userfiles/files/free-800-robux_GM431946152.pdf
    • https://www.dc-itsolutions.com/userfiles/files/free-minecraft-accounts-reddit_GM479516143.pdf
    • https://www.dc-itsolutions.com/userfiles/files/roblox-noclip-cheat-engine-download_GM431946152.pdf
    • https://www.dc-itsolutions.com/userfiles/files/how-to-hack-roblox-for-robux_GM431946152.pdf
    • https://www.dc-itsolutions.com/userfiles/files/roblox-free-credit-card_GM431946152.pdf
    • https://www.dc-itsolutions.com/userfiles/files/free-robux-without-verification_GM431946152.pdf
    • https://www.dc-itsolutions.com/userfiles/files/minecraft-pe-free-apk_GM479516143.pdf
    • https://www.dc-itsolutions.com/userfiles/files/114-4-hacks_GM479516143.pdf
    • http://en.wikipedia.org/wiki/MIT_License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003180.bin
5e01e2fa8c1e9831b3f20ab3a11d0cb0923a30caf019f55187f8fae029abdc71
pdf-font-stream PDF embedded font (sfnt) at offset 0x3180 23292 bytes
font_01_sfnt_off000065ee.bin
74df4927efe9c779afeb37b45c21249b2c55856956b90bab8d44a45a129eff2f
pdf-font-stream PDF embedded font (sfnt) at offset 0x65EE 18300 bytes