Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ca1ccd6f82e28ab…

MALICIOUS

PDF

37.6 KB Created: 2020-09-03 10:32:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 49c6a3504dc76956f9af97f5629ed6b0 SHA-1: 99ae415b86dbdddc36197f2e6db08b127a7920de SHA-256: 9ca1ccd6f82e28abd5b12ca4b3a2311a7032b4ba649d8a711d3cbb71a6b7a716
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, with one identified as a malicious redirector. The document body is heavily obfuscated but contains the same URL as the redirector, suggesting a lure to a malicious site. The presence of a link farm indicates a potential SEO poisoning or traffic redirection scheme.

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/pify?keyword=soli+deo+gloria+music+sheet
    • https://static.usrfiles.com/ugd/173616_09fa5cd0e83b4629824d0af3575e4cd4.pdf
    • https://static.usrfiles.com/ugd/b8c837_cf0379e7f31b422aa60769b3024e833a.pdf
    • https://static.usrfiles.com/ugd/6d59ab_2238723523104c7cb56321c7ef1dca58.pdf
    • https://static.usrfiles.com/ugd/808d8c_64d1ac87a30d4598a4a97f647dbf2c93.pdf
    • https://static.usrfiles.com/ugd/b8c837_ad892277627e477e92fb6256ff8f8f41.pdf
    • https://static.usrfiles.com/ugd/9b33c5_e59ee62ee5e74452b45fd4fc122839d8.pdf
    • https://static.usrfiles.com/ugd/b8c837_8657b16b46ef4a44aa561a4287601a24.pdf
    • https://static.usrfiles.com/ugd/06497e_533d091b2c4b40388efe969c3a1acc08.pdf
    • https://static.usrfiles.com/ugd/5e8de6_826186885ef74d3d8ab44b43d92320fd.pdf
    • https://static.usrfiles.com/ugd/0511f5_73ed985db71d49ce8d0a051a4f508d28.pdf
    • https://cdn.shopify.com/s/files/1/0431/8081/8581/files/veborep.pdf
    • https://cdn.shopify.com/s/files/1/0432/5549/6866/files/jivoxilobori.pdf
    • https://cdn.shopify.com/s/files/1/0430/7661/6346/files/datefuxedigorizerofe.pdf
    • https://cdn.shopify.com/s/files/1/0437/6982/3390/files/butlins_skegness_map.pdf
    • https://cdn.shopify.com/s/files/1/0435/0168/2843/files/areopagitica_milton.pdf
    • https://cdn.shopify.com/s/files/1/0434/4872/9766/files/berlingo_2020_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/gowavofopinesifaremoka.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_off000053b0.bin
91ad1b2660b93440f7ecdfb6ff6182e5d162fd82b2cf548a2b3fb3d828e66f34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53B0 5456 bytes
font_01_sfnt_off0000660e.bin
222cb4674ef211ae2d5c26296d8389d76449f72257b557ff4f08942a5d292168		 pdf-font-stream PDF embedded font (sfnt) at offset 0x660E 10436 bytes

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