Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c83e555c8b85f0b…

MALICIOUS

PDF

41.3 KB Created: 2020-08-28 22:43:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 836c4918cac537b12b17c99bf463cee0 SHA-1: a1dadaa073e883a41e62ef52dd85126fffe88222 SHA-256: 1c83e555c8b85f0beb4fd9d6da0405fe6a891a4ec6858d010fa89c096f488286
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, a technique often used for SEO poisoning or to direct users to malicious sites. One of the primary links, 'https://ttraff.com/wix?keyword=frackin+universe+epp', is flagged as a malicious redirector. The document body, though heavily obfuscated, appears to contain references to this URL and other PDF links, reinforcing the link farm attack pattern. 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=frackin+universe+epp
    • https://static.usrfiles.com/ugd/b8c837_b798244337974331a7ca0fb43a6ad61f.pdf
    • https://static.usrfiles.com/ugd/b8c837_03cd2da1f9fc42399650b944f5b7e15d.pdf
    • https://static.usrfiles.com/ugd/b8c837_46201d8eba5c486faf7cc6226747510c.pdf
    • https://static.usrfiles.com/ugd/b8c837_ef2b933a735040d496d20ab50877c2cd.pdf
    • https://cdn.shopify.com/s/files/1/0433/8073/6165/files/38450435266.pdf
    • https://cdn.shopify.com/s/files/1/0428/3724/6118/files/42755043333.pdf
    • https://cdn.shopify.com/s/files/1/0462/4849/3205/files/26794737230.pdf
    • https://cdn.shopify.com/s/files/1/0440/3471/9909/files/wicked_defying_gravity_sheet_music_free.pdf
    • https://static.usrfiles.com/ugd/b8c837_e43635ec5705449cb025bf6588570ddf.pdf
    • https://static.usrfiles.com/ugd/b8c837_c7453fe166aa421cb9a6576793c7d090.pdf
    • https://cdn.shopify.com/s/files/1/0434/3509/8264/files/95039112905.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/bewewolifokolugetu.pdf
    • https://cdn.shopify.com/s/files/1/0434/1107/9317/files/characteristics_of_successful_communication.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_off000063d2.bin
9eb42536e460ad63b95363291ac1bcd3bebab03c0c8f5ad797d5866cb3a76778		 pdf-font-stream PDF embedded font (sfnt) at offset 0x63D2 4972 bytes
font_01_sfnt_off000074d2.bin
d82e32a48c22e8fe0101c31e1271473ab8fbeed292400756f5fdbcf57d77db07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x74D2 10588 bytes

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