Malicious PDF — malware analysis report

Static analysis result for SHA-256 90cd62807980fb46…

MALICIOUS

PDF

60.9 KB Created: 2020-08-30 22:23:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3b8d377fdbe27f508b3baaa8af7a4633 SHA-1: 92ee562b531c671aa00b064b512e5cc194a7a08d SHA-256: 90cd62807980fb46f25f91fa8383602a0deebfe7168778fd2b0f284d32503c55
120 Risk Score

Malware Insights

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

The PDF contains a link farm designed to redirect users to malicious infrastructure, specifically identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The primary malicious URL is https://ttraff.cc/wix?keyword=blue+lantern+dc. The document body, though heavily obfuscated, contains this URL, suggesting a social engineering lure to disguise the malicious intent. The 'PDF_SEO_LINK_FARM' heuristic further indicates a large number of external links, likely to obscure the malicious destination.

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.cc/wix?keyword=blue+lantern+dc
    • https://cdn.shopify.com/s/files/1/0433/0763/0747/files/aerodynamics_for_engineers_6th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0437/8198/0317/files/juworekunixigilelu.pdf
    • https://cdn.shopify.com/s/files/1/0432/3786/7687/files/comforter_sets_with_sheets_full.pdf
    • https://cdn.shopify.com/s/files/1/0431/2816/0413/files/boy_scout_fieldbook.pdf
    • https://static.usrfiles.com/ugd/b8c837_bde988d0d7fc4f018f6aa7a32bdb3418.pdf
    • https://static.usrfiles.com/ugd/7ea8bb_50b8468cb8f74a208b139021c758b6a1.pdf
    • https://static.usrfiles.com/ugd/824332_394debf31b3a4214ad0fd35c3ff66c99.pdf
    • https://static.usrfiles.com/ugd/3f0e57_b577f612f5024d74969b769d8fdabcbc.pdf
    • https://static.usrfiles.com/ugd/b52961_80a75f64b05f45f5aa19a9a8cede4501.pdf
    • https://static.usrfiles.com/ugd/b8c837_b15b48bc05bb442585c42e9101cdf8a4.pdf
    • https://static.usrfiles.com/ugd/b8c837_0afa4b2a84a64e9baa824f45f18a3dfa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4189/0210/files/28144624881.pdf
    • https://cdn.shopify.com/s/files/1/0439/2802/7304/files/96512607159.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_off0000b376.bin
e41cb0f59d90b2cf6a8ce8be1f9578ba8ed4bcb2a60cac68bf4d89d4e67c294e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB376 4804 bytes
font_01_sfnt_off0000c3d1.bin
7d8ac77a517b4627a66af83a8d846363f226d9fe5563890e26f693fc948ffa92		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC3D1 10248 bytes

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