Malicious PDF — malware analysis report

Static analysis result for SHA-256 f66d64f3162b95d0…

MALICIOUS

PDF

53.5 KB Created: 2020-08-12 03:08:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05b2502a159359ddba929a2e5f102d2e SHA-1: 4c0b75900babbb3bf238159f23dad071c4b5ff32 SHA-256: f66d64f3162b95d0a48770743db9c02a6dc0d4751670549acc3adaa86bb432e3
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.ru'. This URL is embedded within the document body, disguised as a marketing PDF related to Maslow's hierarchy of needs. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on Shopify. The ML classifier strongly indicates maliciousness. The primary attack vector appears to be directing users to malicious infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=pyramide+des+besoins+de+maslow+marketing+pdf
    • http://files.cyberedchristianschool.org/uploads/1/3/0/8/130873826/2411584.pdf
    • http://files.michelleveixmccartan.com/uploads/1/3/0/8/130813885/tilosusekamozamamogi.pdf
    • http://files.vedanza.com/uploads/1/3/0/9/130969987/sozobugina-xomefirexosa.pdf
    • https://cdn.shopify.com/s/files/1/0430/7651/8049/files/wulopitesowurok.pdf
    • https://cdn.shopify.com/s/files/1/0439/0633/4888/files/mutojot.pdf
    • https://cdn.shopify.com/s/files/1/0429/2427/7923/files/49429777687.pdf
    • https://cdn.shopify.com/s/files/1/0435/0181/3915/files/95658231551.pdf
    • https://cdn.shopify.com/s/files/1/0437/6988/8917/files/divi_mobile_logo_size.pdf
    • https://cdn.shopify.com/s/files/1/0431/2737/3990/files/snmptrapd_conf_example.pdf
    • https://cdn.shopify.com/s/files/1/0433/4813/2008/files/51731964314.pdf
    • https://cdn.shopify.com/s/files/1/0439/9579/1518/files/roll20_spell_macros_5e.pdf
    • https://cdn.shopify.com/s/files/1/0430/8205/5842/files/96059556361.pdf
    • https://cdn.shopify.com/s/files/1/0435/4126/6587/files/capitalism_vs_socialism.pdf
    • https://cdn.shopify.com/s/files/1/0431/1023/6314/files/57957016228.pdf
    • https://cdn.shopify.com/s/files/1/0432/7027/5237/files/41076521502.pdf
    • https://cdn.shopify.com/s/files/1/0433/8837/1107/files/fofilixenujunowukal.pdf
    • https://cdn.shopify.com/s/files/1/0430/6416/4506/files/soxuzavi.pdf
    • https://cdn.shopify.com/s/files/1/0429/6110/9155/files/88242996205.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000075ec.bin
81f963c85a65afdfee666f0689d41670fb813d32cf00d90c61c727c956183d41
pdf-font-stream PDF embedded font (sfnt) at offset 0x75EC 5760 bytes
font_01_sfnt_off00008982.bin
b28a0007c10f6e2c83ee45e0573c135801dd9f0db8c8b985b2b21d5508cda916
pdf-font-stream PDF embedded font (sfnt) at offset 0x8982 11912 bytes
font_02_sfnt_off0000aecc.bin
2660e3f19262e0c1c514f7a0045fa503cee1831b49ccf21a997877b0058606e8
pdf-font-stream PDF embedded font (sfnt) at offset 0xAECC 16756 bytes