Malicious PDF — malware analysis report

Static analysis result for SHA-256 3df3606137fda444…

MALICIOUS

PDF

43.0 KB Created: 2020-08-28 23:23:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 613305a799a6f085c9fd76f7aef456a1 SHA-1: cd7f04ff4b58db7f8a4b63b7d76a4fa1a8b6665a SHA-256: 3df3606137fda4445ec0edd59304a785f566b5fd6967fb01d83d86fdad60314f
120 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File Download T1566.002 Spearphishing Attachment

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com' with a query parameter suggesting a download lure for 'rage plugin hook'. The document body, though heavily obfuscated, contains similar text, reinforcing the download lure. The presence of numerous other PDF links, while marked as benign, indicates a link farm strategy, likely to improve search engine visibility for malicious content.

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=rage+plugin+hook+download
    • https://static.usrfiles.com/ugd/b8c837_a14da25cc78048a3a60dba82ab30c952.pdf
    • https://static.usrfiles.com/ugd/b8c837_6664b1be210a4483b4d4a3ef414dfdfb.pdf
    • https://static.usrfiles.com/ugd/b8c837_beae7e68c9d34032ac0c56de8b4b6aed.pdf
    • https://static.usrfiles.com/ugd/b8c837_94ebdc909c7447589fc4695df380f5fd.pdf
    • https://cdn.shopify.com/s/files/1/0431/6640/0663/files/gaxenogutukijixawunefu.pdf
    • https://cdn.shopify.com/s/files/1/0440/0798/1214/files/valor_absoluto_y_valor_relativo.pdf
    • https://cdn.shopify.com/s/files/1/0429/4246/4166/files/ccna_security_syllabus_2020.pdf
    • https://cdn.shopify.com/s/files/1/0430/2356/4957/files/dim_abituriyent_jurnali_2020.pdf
    • https://cdn.shopify.com/s/files/1/0440/6883/1382/files/59058234019.pdf
    • https://cdn.shopify.com/s/files/1/0433/1975/4907/files/dilejev.pdf
    • https://cdn.shopify.com/s/files/1/0438/5597/0464/files/runivuj.pdf
    • https://cdn.shopify.com/s/files/1/0431/8534/0580/files/safutorarijasifaf.pdf
    • https://static.usrfiles.com/ugd/b8c837_447a6753bb234add81661ee07112d95c.pdf
    • https://static.usrfiles.com/ugd/b8c837_61aead6d60824e048b7a574f62f2de6a.pdf
    • https://static.usrfiles.com/ugd/b8c837_1d8c67967e934c16be67fbfbc3b00398.pdf
    • https://static.usrfiles.com/ugd/b8c837_1b1a633001ce4af7bdc2582769e90779.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/
    • https://static.usrfiles.com/ugd/b8

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000677f.bin
e17df3d37b2f44a0665fa0b943b4311e2eec0076f103626cb143ffe9a22d3635		 pdf-font-stream PDF embedded font (sfnt) at offset 0x677F 5112 bytes
font_01_sfnt_off000078f6.bin
c01833ced896e050786ae995efb48bd3716483b574161ff424289629ecfbfb5d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x78F6 11556 bytes

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