Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e56e5ff997797bc…

MALICIOUS

PDF

51.7 KB Created: 2020-08-06 18:43:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 75f23049168f5667c48144b9051cdcbb SHA-1: 56c4cb5e33eed831b2177ae7156d44a24da2869c SHA-256: 2e56e5ff997797bcdffa344c9021513e517bf3c76a701129c67397f974b37182
120 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, with one pointing to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.ru/pify?keyword=que+es+psicologia+humanista+pdf', suggesting a lure to a malicious site disguised as a PDF download. The presence of numerous external PDF links further indicates a link farm or redirection strategy.

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=que+es+psicologia+humanista+pdf
    • http://miselolup.pencilworksbyjoyce.com/uploads/1/3/0/7/130776257/8646e07bd9c.pdf
    • http://files.leuelscientifictech.com/uploads/1/3/2/6/132696323/669264.pdf
    • http://files.roomforgrace14.com/uploads/1/3/2/8/132815004/3425091.pdf
    • https://cdn.shopify.com/s/files/1/0436/8600/2838/files/pajewogozum.pdf
    • https://cdn.shopify.com/s/files/1/0434/4774/6710/files/26277987047.pdf
    • https://cdn.shopify.com/s/files/1/0430/6809/6661/files/virubazatinivuj.pdf
    • https://cdn.shopify.com/s/files/1/0429/9728/5027/files/conditional_of_multivariate_normal_distribution.pdf
    • https://cdn.shopify.com/s/files/1/0430/7173/3917/files/23063463280.pdf
    • https://cdn.shopify.com/s/files/1/0440/2626/5765/files/68154326802.pdf
    • https://cdn.shopify.com/s/files/1/0430/5177/8202/files/pujamulinupam.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/8003629611.pdf
    • https://cdn.shopify.com/s/files/1/0434/3804/7384/files/82455269662.pdf
    • https://cdn.shopify.com/s/files/1/0427/9658/1020/files/viwef.pdf
    • https://cdn.shopify.com/s/files/1/0431/4536/3610/files/9190224875.pdf
    • https://cdn.shopify.com/s/files/1/0437/3023/9642/files/mukewulitewivazime.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://cdn.shopify.com

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000089c3.bin
273b736042219171541b9d6c346d7cf680a73e839d91db95fe317bae4d706c26		 pdf-font-stream PDF embedded font (sfnt) at offset 0x89C3 5536 bytes
font_01_sfnt_off00009c70.bin
41ef362a403eeb413d72499c7549efb2c42bc6d7105c342fd85d41a22afa3f60		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9C70 10952 bytes

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