Malicious PDF — malware analysis report

Static analysis result for SHA-256 c583950c50b1e434…

MALICIOUS

PDF

45.6 KB Created: 2020-08-31 00:27:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c5f0268e729be389d5ccbefafbf7e25 SHA-1: 6518d23b5c6c12b7979be2f7e20e951a22653742 SHA-256: c583950c50b1e434cb40d9e01d77458cd749f4420b312c3aa3a7e66569106c82
120 Risk Score

Malware Insights

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

The PDF file contains a significant number of embedded links, identified as a link farm. One of these links, 'https://ttraff.ru/wix?keyword=identificacion+de+las+necesidades+de', points to known malicious redirector infrastructure. The document body is heavily obfuscated but contains references to URLs, suggesting a delivery mechanism for malicious content. The presence of a link farm and a malicious redirector indicates an attempt to lure users to harmful sites.

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.ru/wix?keyword=identificacion+de+las+necesidades+de
    • https://cdn.shopify.com/s/files/1/0435/4532/9832/files/bhagwan_all_song.pdf
    • https://cdn.shopify.com/s/files/1/0462/4452/8288/files/lazulinodifovomisatos.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/90685913575.pdf
    • https://cdn.shopify.com/s/files/1/0429/2860/3295/files/56693763580.pdf
    • https://static.usrfiles.com/ugd/b52961_aa0673dd159c4f728c3db7ce80a6f581.pdf
    • https://static.usrfiles.com/ugd/253000_18147c0b40af4ba6aee7257effcbead2.pdf
    • https://static.usrfiles.com/ugd/02beb7_23f2f68bac4e485f80ca6b8d2f02ad57.pdf
    • https://static.usrfiles.com/ugd/824332_42d9df28d3d04a8c840b6307b129cff9.pdf
    • https://static.usrfiles.com/ugd/b8c837_57ce9fba7b8f487da62bb35dc16ce0a2.pdf
    • https://cdn.shopify.com/s/files/1/0430/9044/4445/files/firibugagiporabudexiwo.pdf
    • https://cdn.shopify.com/s/files/1/0431/6895/6565/files/carnavais_malandros_e_heris_resumo.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_off00007364.bin
a8c7b0e85d86302b985a6a2457464d45f38b5facd2f53af4d5c9d5eb712e1783		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7364 4856 bytes
font_01_sfnt_off000083f2.bin
b111bfbecb08878c54e4afe706f74042505f6b6719951c77846eac29ba57b1c9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x83F2 11200 bytes

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