Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd5ae53cc258e335…

MALICIOUS

PDF

58.6 KB Created: 2020-08-09 11:52:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a39b2092ee672ad081e93edc2f2a993 SHA-1: 32569270b130f32138bbb8555e32d351e3e0eae2 SHA-256: cd5ae53cc258e3350647230473e44ec31f9506fcc54562e98c47c4aa50b1055c
120 Risk Score

Malware Insights

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

The PDF contains a mass external link farm, with a critical heuristic firing for a malicious redirector. The embedded URL `https://ttraff.cc/pify?keyword=business+management+dictionary+pdf` is a known malicious redirector. The document body, though heavily obfuscated, contains this URL, suggesting the primary intent is to trick the user into clicking the link. No scripts were extracted from this sample.

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.cc/pify?keyword=business+management+dictionary+pdf
    • http://files.bfiny.com/uploads/1/3/2/7/132740606/8347467.pdf
    • http://demabeb.paulmon-global.com/uploads/1/3/0/8/130874524/229c3b7b88d.pdf
    • http://files.kca-agtb.com/uploads/1/3/0/9/130969003/soxozadupolol.pdf
    • https://cdn.shopify.com/s/files/1/0438/0930/8829/files/vilel.pdf
    • https://cdn.shopify.com/s/files/1/0440/0722/7542/files/95493442003.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23158701460.pdf
    • https://cdn.shopify.com/s/files/1/0428/9635/9580/files/87123873226.pdf
    • https://cdn.shopify.com/s/files/1/0429/0733/6857/files/darofitosuviniweza.pdf
    • https://cdn.shopify.com/s/files/1/0432/3871/9648/files/79396535232.pdf
    • https://cdn.shopify.com/s/files/1/0431/1135/0439/files/git_installation_mac.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46905239833.pdf
    • https://cdn.shopify.com/s/files/1/0433/4505/1797/files/wopulatupurametuso.pdf
    • https://cdn.shopify.com/s/files/1/0435/8651/9195/files/5251015243.pdf
    • https://cdn.shopify.com/s/files/1/0437/3548/2517/files/aditya_hrudayam_stotram_in_oriya.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/s/files/1/0438/093

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000a683.bin
7bfc900169bd4ece4e187c093c37eb6d51c03c564412fbd44d8c17104efd98fe		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA683 5596 bytes
font_01_sfnt_off0000b97f.bin
d34436583d748961fd0df43b0ded327626744cd27a86ab9fa181f8b98c79dc9f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB97F 10576 bytes

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