Malicious PDF — malware analysis report

Static analysis result for SHA-256 8eb5f2dc3d65044d…

MALICIOUS

PDF

42.3 KB Created: 2021-05-18 01:39:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 7b46412aec16733ef44b2c95724f3ca1 SHA-1: b5b09080eef0714da49c76d8be3f6c5075f37181 SHA-256: 8eb5f2dc3d65044dc34de0b673e0d85523156e59eb93d4281c95ae315754680f
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links to external websites, many of which are structured as SEO-optimized links for game-related cheats and hacks. The ML classifier strongly indicates maliciousness, and the presence of a download button lure reinforces the deceptive nature of the document. The embedded URLs suggest a phishing or malware distribution attempt.

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/431946152/free-robux-no-verification-2021-game-hack PDF link annotation
    • http://pastelli.gr/images/coin-master-hack-apk-download-for-android_GM406889139.pdfIn PDF document text
    • http://pastelli.gr/images/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • http://pastelli.gr/images/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://pastelli.gr/images/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pastelli.gr/images/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://pastelli.gr/images/teach-me-to-hack_GM431946152.pdfIn PDF document text
    • http://pastelli.gr/images/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://pastelli.gr/images/claim-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://pastelli.gr/images/free-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://pastelli.gr/images/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://pastelli.gr/images/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • http://pastelli.gr/images/roblox-e-free_GM431946152.pdfIn PDF document text
    • http://pastelli.gr/images/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://pastelli.gr/images/coin-master-hack-apk-33-download_GM406889139.pdfIn PDF document text
    • http://pastelli.gr/images/how-do-you-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://pastelli.gr/images/roblox-free-login_GM431946152.pdfIn PDF document text
    • http://pastelli.gr/images/is-minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://pastelli.gr/images/how-to-make-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://pastelli.gr/images/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://pastelli.gr/images/how-to-get-free-roblox_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_off00004863.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4863 24520 bytes
SHA-256: 90be4c25448d7d90450c076287ea4ccfcad6f66172239fd248134f1478ed59fb
font_01_sfnt_off000080ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80AD 19004 bytes
SHA-256: d712ae43aec968503a6d4b8ef93db90b07e4d7d9799b66e9787cf09d99ae12e2

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