Malicious PDF — malware analysis report

Static analysis result for SHA-256 35589bc07a136793…

MALICIOUS

PDF

53.7 KB Created: 2020-07-30 17:07:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6dbb093464fd5562c33867c1c52a3186 SHA-1: bdb1bb21cd2f022bb647ae08b0efb0beb4b90a9e SHA-256: 35589bc07a13679339e309734d3e939ca24c7308c3406f909124b649e21ca035
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it links to known malicious redirector infrastructure. The document body, though heavily obfuscated, suggests a lure related to a 'blank 2020 year calendar pdf'. The primary malicious URL identified is 'https://ttraff.com/pify?keyword=blank+2020+year+calendar+pdf', which likely serves as a redirector to further malicious content. The presence of a link farm further supports the intent to distribute 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/pify?keyword=blank+2020+year+calendar+pdf
    • http://files.hillcrestbaptistchurch.info/uploads/1/3/2/7/132740987/sogewunebajireg_xebokijevifoni_majivepekude.pdf
    • http://files.inspiredft.com/uploads/1/3/1/4/131405948/4017639.pdf
    • http://files.deshazogroup.com/uploads/1/3/1/3/131383982/4112505.pdf
    • http://files.des
    • https://cdn.shopify.com/s/files/1/0434/2808/5912/files/52204505632.pdf
    • https://cdn.shopify.com/s/files/1/0433/6707/1894/files/wadagutewokewipowope.pdf
    • https://cdn.shopify.com/s/files/1/0434/5564/3814/files/tenok.pdf
    • https://cdn.shopify.com/s/files/1/0433/9574/3907/files/26434781401.pdf
    • https://cdn.shopify.com/s/files/1/0429/8119/5927/files/2368265420.pdf
    • https://cdn.shopify.com/s/files/1/0440/8341/3142/files/nonikolubadafivopupovevem.pdf
    • https://cdn.shopify.com/s/files/1/0429/1595/4855/files/13370939778.pdf
    • https://cdn.shopify.com/s/files/1/0429/2578/5255/files/40873885947.pdf
    • https://cdn.shopify.com/s/files/1/0431/2023/0564/files/xatoxatidikazibagif.pdf
    • https://cdn.shopify.com/s/files/1/0429/3325/6345/files/3462099040.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/30551251375.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_off00008a10.bin
5a175c0684c881c2a41ac1aede240f9a1450ed1beac217ec53e62492f4ffc47d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8A10 5012 bytes
font_01_sfnt_off00009b28.bin
63e3578b557fec8b0c91fa192e0607b9910caa45f326d750b17007c16059b7d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9B28 15072 bytes

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