Malicious PDF — malware analysis report

Static analysis result for SHA-256 caa2150a0c06e3ba…

MALICIOUS

PDF

41.0 KB Created: 2020-08-05 16:11:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3d3de7fde74f778476f4da0f2d88252a SHA-1: fe2f4b5449323c3d9c474e8e6ee77b3d42ce0100 SHA-256: caa2150a0c06e3bacde8b11fdc4549e704b8b8581f243bf34e76f41b121c6b9a
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a redirector service. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK indicates that one of the primary links leads to known malicious infrastructure. The PDF_SEO_LINK_FARM heuristic further suggests that the document is designed to host a large number of external links, likely for SEO manipulation or to distribute malicious payloads through a chain of redirects.

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=classification+des+actinomycetes+pdf
    • http://lisaban.cgarrodart.com/uploads/1/3/0/7/130739564/5944715.pdf
    • http://files.jasna-orswwa.org/uploads/1/3/1/4/131406749/kolatezu.pdf
    • http://gigipumul.beeparksandthehornets.com/uploads/1/3/0/7/130776542/5dd60f1d6.pdf
    • http://files.embassyrow-properties.com/uploads/1/3/0/7/130739450/6889841.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/lufixupiz.pdf
    • https://cdn.shopify.com/s/files/1/0433/9462/9786/files/atlas_12x36_lathe_manual.pdf
    • https://cdn.shopify.com/s/files/1/0430/6488/5402/files/19277717008.pdf
    • https://cdn.shopify.com/s/files/1/0432/5575/9011/files/kenmore_elite_washer_manual.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/febipak.pdf
    • https://cdn.shopify.com/s/files/1/0431/2216/3876/files/kozosisa.pdf
    • https://cdn.shopify.com/s/files/1/0437/1618/2166/files/73777622100.pdf
    • https://cdn.shopify.com/s/files/1/0432/5202/3458/files/78145949504.pdf
    • https://cdn.shopify.com/s/files/1/0428/9485/2252/files/16376464333.pdf
    • https://cdn.shopify.com/s/files/1/0431/5542/3398/files/how_to_keep_your_computer_awake.pdf
    • https://cdn.shopify.com/s/files/1/0433/9728/3992/files/becoming_animal_david_abram.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_off000062bc.bin
646fff32c04f1fa690b043b635d5f3bd56c09adb0720b1430eba59dc9f4b8bbc		 pdf-font-stream PDF embedded font (sfnt) at offset 0x62BC 5212 bytes
font_01_sfnt_off00007473.bin
f93e617302635693d634733ef36ea0f23bc5caaa1a77e98e67be607fb108d818		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7473 10176 bytes

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