Malicious PDF — malware analysis report

Static analysis result for SHA-256 c78139b1d122a855…

MALICIOUS

PDF

37.3 KB Created: 2020-08-29 13:48:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 722d16eeb9351d4cd262f76094e691a5 SHA-1: 8afd4f61c2605f54baecde16d9e4c4b137d7712f SHA-256: c78139b1d122a855e8a09d7c92782a920c4d177499ab4986170f4c65843303d1
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service. The primary heuristic indicates that the PDF links to known malicious redirector infrastructure. The document body contains the URL https://ttraff.com/wix?keyword=jori+yoga+jr+7360, which is likely intended to lure the user to a malicious site. 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.com/wix?keyword=jori+yoga+jr+7360
    • https://static.usrfiles.com/ugd/b8c837_d3081abcf207469e91cb6031945b2bdb.pdf
    • https://static.usrfiles.com/ugd/b8c837_53eeca06e23a40fb9d42291d8deede4a.pdf
    • https://static.usrfiles.com/ugd/b8c837_511bd6ddab0a4d4e842a46824e7d429e.pdf
    • https://static.usrfiles.com/ugd/b8c837_c932625d6e78453ca8ecbc84a2ade8ea.pdf
    • https://static.usrfiles.com/ugd/b8c837_e004a351413f456ca7591bffbd46aafe.pdf
    • https://static.usrfiles.com/ugd/b8c837_88df5c8725814e8daedac952781e8b81.pdf
    • https://static.usrfiles.com/ugd/b8c837_49f7236672a14310a7dd6c0d8eb3a75f.pdf
    • https://static.usrfiles.com/ugd/b8c837_c1a25227efe24efa84f4228e272ced14.pdf
    • https://static.usrfiles.com/ugd/b8c837_676dd3691fd14e648bab31c3e51e69c6.pdf
    • https://cdn.shopify.com/s/files/1/0436/2692/2146/files/sevoduzumexonajobogi.pdf
    • https://cdn.shopify.com/s/files/1/0431/4529/8074/files/10783652997.pdf
    • https://cdn.shopify.com/s/files/1/0429/7038/2490/files/jorovimirabiko.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_off0000530c.bin
0f8fec251be6bc6383b9795f5011b6831f37805d5c1744d48e3a330dc2cf3c97		 pdf-font-stream PDF embedded font (sfnt) at offset 0x530C 5348 bytes
font_01_sfnt_off00006557.bin
29643da6a2dc752632613094099613699816fc2d9c390574d9f0b65f5ffc74b0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6557 10552 bytes

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