Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a30290cb10ae753…

MALICIOUS

PDF

59.2 KB Created: 2020-08-31 03:58:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5c40b82b9e0c19a91e1917298e8f1b9e SHA-1: a004f4ca0632182c661a3075a92704a8cae04c8a SHA-256: 3a30290cb10ae753933c702ae18fed38fb6de78fc912df407fc5070d4529447f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'https://ttraff.com/wix?keyword=the+usability+engineering+lifecycle+pdf'. Additionally, it features a mass external PDF link farm, with the first URL being 'https://cdn.shopify.com/s/files/1/0427/5293/4044/files/base64_encode_vb._net.pdf'. The document body, though heavily obfuscated, contains references to the redirector URL, suggesting a lure to external content.

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.com/wix?keyword=the+usability+engineering+lifecycle+pdf
    • https://cdn.shopify.com/s/files/1/0427/5293/4044/files/base64_encode_vb._net.pdf
    • https://cdn.shopify.com/s/files/1/0432/6886/6214/files/que_es_una_plataforma_informatica.pdf
    • https://cdn.shopify.com/s/files/1/0434/1740/3559/files/adobe_reader_10_free_italiano_gratis.pdf
    • https://cdn.shopify.com/s/files/1/0428/9763/7535/files/binuginopaxu.pdf
    • https://static.usrfiles.com/ugd/6a22cb_46a98cb0d02149dc8df6ba4a5d642411.pdf
    • https://static.usrfiles.com/ugd/3eed2b_de4098e3de6b49ba9e285a9e660fa731.pdf
    • https://static.usrfiles.com/ugd/b8c837_70a1ffe7f8bc4e2f9c2a1297548aa03e.pdf
    • https://static.usrfiles.com/ugd/b8c837_7a23793e39214501a84623e8fb0e75d6.pdf
    • https://static.usrfiles.com/ugd/0049ca_9df83062831c40d585f2f59ec726061e.pdf
    • https://static.usrfiles.com/ugd/1b8612_e9cff77d40ca45bcbc3dda5a040c8424.pdf
    • https://static.usrfiles.com/ugd/b8c837_6a002341c7854b5e9ed481ca12bec94e.pdf
    • https://static.usrfiles.com/ugd/b8c837_77c4971fca9f41638db2f3f9bb6d221b.pdf
    • https://static.usrfiles.com/ugd/b8c837_0eb0e77a0ce34d7fbf99dfe246adae0b.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/
    • https://cdn.shopify.com/s/files/1/0428/9763/7535/files/binuginopaxu.pd

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a95c.bin
22790caae78c9a4da0ccc735ae4cf1b234dbea80f0d32c4014c5dc87389c57d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA95C 5608 bytes
font_01_sfnt_off0000bc60.bin
b730e9e5134e6d9f2a0263d11bdaf138271c7c7ef59104a40373705c7ba091b1		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBC60 10556 bytes

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