Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3c7bcbfd3b8fca9…

MALICIOUS

PDF

38.8 KB Created: 2020-08-29 23:42:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71ace9493439eb23b1c36eb50d4e7434 SHA-1: d42e8275a8d058dbae48e0dc570c2d1004d2cc8a SHA-256: c3c7bcbfd3b8fca9977a53e2c8696546120cb5b23259418cb3f00772115f3efe
120 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to 'Halo combat evolved multiplayer download' and the malicious URL itself, suggesting a lure to trick users into clicking the link. The PDF_SEO_LINK_FARM heuristic indicates the PDF is part of a larger network of linked documents, likely for SEO poisoning or distributing malicious content. No scripts were extracted from this sample.

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.link/wix?keyword=halo+combat+evolved+multiplayer+down
    • https://static.usrfiles.com/ugd/b8c837_72a36348727c4e4a8f130218f187521d.pdf
    • https://static.usrfiles.com/ugd/b8c837_d6b7d4e6566648ff8d62b88f85dfd127.pdf
    • https://static.usrfiles.com/ugd/b8c837_794720be077449388cd86d87b8f395c3.pdf
    • https://static.usrfiles.com/ugd/b8c837_9d16334cbd504f07885b21c2dfbbde00.pdf
    • https://cdn.shopify.com/s/files/1/0433/4695/2351/files/wunomamizezaduledow.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/dotanivulekipir.pdf
    • https://cdn.shopify.com/s/files/1/0431/4431/5041/files/40773127654.pdf
    • https://cdn.shopify.com/s/files/1/0440/8039/8486/files/35671575707.pdf
    • https://static.usrfiles.com/ugd/b8c837_3852c792e1594649940fe7e44b6a2bfe.pdf
    • https://static.usrfiles.com/ugd/9e41f0_e427d3cbc40543309cb7461e326c9bcc.pdf
    • https://static.usrfiles.com/ugd/a467d2_5cb7c8651f6b41b792196c3edfddc3de.pdf
    • https://static.usrfiles.com/ugd/b8c837_da0e981594ba4776892747714e25d664.pdf
    • https://static.usrfiles.com/ugd/0a0016_5e81c1b6a9a44aff814a2dfc05de742d.pdf
    • https://static.usrfiles.com/ugd/b8c837_837c817a941248b3b46c4824b42c1f69.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_off0000580a.bin
d480ac165329bc011a30572b2c40b9d163e9927bd825ea6e69647c1a0ebb37a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x580A 5396 bytes
font_01_sfnt_off00006a61.bin
b37b2b9b909d6923fb12d97c2c93014b3a0f89b8e0bfac9403720b9b96874b6a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A61 10712 bytes

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