Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0c941a03daa5606…

MALICIOUS

PDF

49.4 KB Created: 2020-08-30 22:22:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a7e84dec03074bc310c55b89986b772 SHA-1: dc16df480402f091fac27703d7b8c3f89e7f58a2 SHA-256: d0c941a03daa5606cab8d9412b97727982bf15ca1a23c39ecf219300474c9223
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a link farm and a specific redirector URL, indicating a lure to a malicious site. The heuristic 'SE_PAYMENT_REDIRECT_LURE' strongly suggests the document's content is designed to trick the user into believing there are new payment instructions. The primary malicious URL identified is https://ttraff.cc/wix?keyword=kingston+ram+guide.

Heuristics 4

  • 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.
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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=kingston+ram+guide
    • https://static.usrfiles.com/ugd/10b11f_9bb75a1cc666475e94cf2123cde26f8a.pdf
    • https://static.usrfiles.com/ugd/4cf28d_ef1e6e64f7c94fcebc8cc975af4fa52f.pdf
    • https://static.usrfiles.com/ugd/b8c837_ca7214c10c1b47438db081708e9ff2ce.pdf
    • https://static.usrfiles.com/ugd/b8c837_f28afa62ba1c4f31a5605330b5738dc6.pdf
    • https://static.usrfiles.com/ugd/b8c837_622fb092c81a4dcaa75e32c6b5e78e1a.pdf
    • https://cdn.shopify.com/s/files/1/0435/8415/9903/files/rofuv.pdf
    • https://cdn.shopify.com/s/files/1/0431/3337/0522/files/42601526633.pdf
    • https://cdn.shopify.com/s/files/1/0432/9812/8036/files/22360052860.pdf
    • https://cdn.shopify.com/s/files/1/0435/7311/7087/files/tewilitavufoxiv.pdf
    • https://cdn.shopify.com/s/files/1/0434/6186/9733/files/92377717571.pdf
    • https://cdn.shopify.com/s/files/1/0430/3136/3747/files/technical_report_definition_in_tagalog.pdf
    • https://cdn.shopify.com/s/files/1/0431/8081/8581/files/xiwaduralirezetujutano.pdf
    • https://static.usrfiles.com/ugd/32acb1_7ef54a8f151f4c07a8374b2c087598c5.pdf
    • https://static.usrfiles.com/ugd/73cb9e_ef6c586c93e943d2850510486514a9ec.pdf
    • https://static.usrfiles.com/ugd/b47706_adfa55382852422da07682664e084208.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_off000078d4.bin
e2aeb7bc4a6b933685a74b5416816aa2b8d4ce26add8a971a8c2d0f80d5bbf70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78D4 5084 bytes
font_01_sfnt_off00008a04.bin
46f13f59c5742101ee6f7c4c145c4bbdb9f4285a611e32e6b54baf243eed646f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A04 15340 bytes

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