Malicious PDF — malware analysis report

Static analysis result for SHA-256 0875fc7a2fa50e39…

MALICIOUS

PDF

35.1 KB Created: 2021-06-26 16:12:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 4266a9382e90de3419747061f7af9a4e SHA-1: f7b856fb4e6f3122a9a181a789a2422902c2f9cf SHA-256: 0875fc7a2fa50e391ffff2aefc0592ced5eb7620a33e0ba4e871492fd9eb7a95
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a large number of external links, many of which are SEO-optimized and point to websites offering 'free Robux' or other game-related cheats. The ML classifier strongly indicated maliciousness, and the presence of a download button lure suggests a deceptive workflow. The document likely serves as a lure to drive traffic to scam or phishing sites.

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.co/app/431946152/how-to-get-free-robux-on-roblox-in-2021-pycksel-game-hack PDF link annotation
    • http://wadimor.co.id/media/imagesfiles/is-minecraft-free-on-mac_GM479516143.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/free-compagnon-roblox_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-master-free-spins-for-today_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/free-tiktok-followers-2021_GM835599320.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/nopde-engine-roblox-hackes-prison-life_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/moon-static-coin-master-generator-hacks-free_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/daily-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/how-to-generate-free-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/coin-master-free-redeem-code_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/hack-para-roblox-dragon-ball-z-rage_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/guest-chat-cheat-engine-roblox_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/roblox-i-got-this-shirt-for-free_GM431946152.pdfIn PDF document text
    • http://wadimor.co.id/media/imagesfiles/free-robux-games-no-verification_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003021.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3021 22132 bytes
SHA-256: 396b6a17fd1cbee0f7ece609ec355ccde3d658886cd0fa9eaed5df766e9dc967
font_01_sfnt_off00006132.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6132 19964 bytes
SHA-256: dcc522e3c5db24c823e7a4479330134be996c1d14eef927d68127b46ba5ee240

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