Malicious PDF — malware analysis report

Static analysis result for SHA-256 84a646d554d519fc…

MALICIOUS

PDF

72.8 KB Created: 2020-08-29 12:40:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4bf0042bf98ac8a4d9561485bcf49ec2 SHA-1: 89bd2029809c592fc4826698e387ae7142f0c358 SHA-256: 84a646d554d519fca0cdc15c61b2f0800ee741627caa786479de1dd72aa59e41
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a mass external link farm and a direct link to a known malicious redirector. The primary malicious URL identified is https://ttraff.cc/wix?keyword=aeneid+4+text. The document body appears to be heavily obfuscated or corrupted, preventing a clear understanding of its intended lure, but the link structure strongly suggests a phishing or redirection attempt.

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://ttraff.cc/wix?keyword=aeneid+4+text
    • https://static.usrfiles.com/ugd/b8c837_add3f8f655134f2aa430dc82e20bad9b.pdf
    • https://static.usrfiles.com/ugd/b8c837_6c7c6e6878ea4f82b151fc743e58e733.pdf
    • https://static.usrfiles.com/ugd/b8c837_22813a1d775f470e99dea0f87da2c60b.pdf
    • https://cdn.shopify.com/s/files/1/0433/5150/7112/files/vmware_vcloud_director_cookbook_download.pdf
    • https://cdn.shopify.com/s/files/1/0438/3532/6624/files/1462327263.pdf
    • https://cdn.shopify.com/s/files/1/0432/2482/6014/files/42120424150.pdf
    • https://cdn.shopify.com/s/files/1/0432/0906/4607/files/byomkesh_bakshi_somogro_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kewosa.pdf
    • https://static.usrfiles.com/ugd/b8c837_003c288ff9d343b18038989854b6a8b5.pdf
    • https://static.usrfiles.com/ugd/b8c837_7f8b68fe90ae4f82ad38b3d9843c69e4.pdf
    • https://static.usrfiles.com/ugd/fe83c3_a86e463bc39248b2a7e13e6c248aa7b0.pdf
    • https://static.usrfiles.com/ugd/b8c837_dd288127f1524a33b729b35cc208c56c.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e48c.bin
3b79de1469a4f6ca6d9fd53230328aa83b5f9d1fe068638ddd0e272ca946c3d7		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE48C 4448 bytes
font_01_sfnt_off0000f3c7.bin
4044ae34ad3fc8c4e0926dda1dfdaf35accb76d4c93d3bd53e974b95a94a58c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF3C7 10156 bytes

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