Malicious PDF — malware analysis report

Static analysis result for SHA-256 b589010155ad21eb…

MALICIOUS

PDF

63.9 KB Created: 2020-08-11 01:44:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 757191146a188ffc4ace718298fccb28 SHA-1: 7ccacae23d39c31f8eeddd14368394166e0869d7 SHA-256: b589010155ad21eb622957996b5152f378b4b1b86508219dfff906449e79ecb9
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating a link to a known malicious redirector. Additionally, PDF_SEO_LINK_FARM indicates a mass of external PDF links, many hosted on Shopify. The document body contains the URL https://ttraff.ru/pify?keyword=equidade+conceito+pdf, which is flagged as malicious. This suggests the document's primary purpose is to redirect users to malicious infrastructure, likely for phishing or malware distribution.

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=equidade+conceito+pdf
    • http://vedelo.sandbfoundation.org/uploads/1/3/1/0/131070450/6319819.pdf
    • http://files.markcharlesdavis.com/uploads/1/3/1/1/131164476/kumejavo.pdf
    • http://files.yoya-textiles.com/uploads/1/3/1/4/131407692/7696572.pdf
    • https://cdn.shopify.com/s/files/1/0431/0410/8711/files/adversity_quotient_test_questionnaire.pdf
    • https://cdn.shopify.com/s/files/1/0428/5225/3863/files/modozeginefimilipaselu.pdf
    • https://cdn.shopify.com/s/files/1/0430/4257/0402/files/liwaragenarowaj.pdf
    • https://cdn.shopify.com/s/files/1/0432/7525/5972/files/92966126919.pdf
    • https://cdn.shopify.com/s/files/1/0439/8402/7806/files/banowidexa.pdf
    • https://cdn.shopify.com/s/files/1/0430/1992/7713/files/xomabapepunuwuriko.pdf
    • https://cdn.shopify.com/s/files/1/0431/8085/1362/files/87984615128.pdf
    • https://cdn.shopify.com/s/files/1/0427/6230/5702/files/87859644801.pdf
    • https://cdn.shopify.com/s/files/1/0433/6268/0984/files/86855225072.pdf
    • https://cdn.shopify.com/s/files/1/0435/8828/8670/files/9750800452.pdf
    • https://cdn.shopify.com/s/files/1/0433/4852/5208/files/47920856293.pdf
    • https://cdn.shopify.com/s/files/1/0431/6885/8280/files/88805756798.pdf
    • https://cdn.shopify.com/s/files/1/0434/2064/7576/files/gelodos.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_off0000b84c.bin
a4b6965a8eb845887b710410281a55f530d1c74ed09d2dd2c9fcb82b3c169c38		 pdf-font-stream PDF embedded font (sfnt) at offset 0xB84C 4928 bytes
font_01_sfnt_off0000c925.bin
c432f40332bf71816030bf28916103e74c9a4d4076f39abee99bd787c56a579e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xC925 13528 bytes

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