Malicious PDF — malware analysis report

Static analysis result for SHA-256 35825a077b4121ed…

MALICIOUS

PDF

42.6 KB Created: 2020-09-05 05:51:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9e5e50f07fcbec5255c7b727bcbe7b55 SHA-1: efc1e8f7eb3753e610a433d9c312bbc996839dbe SHA-256: 35825a077b4121ed674423a5efe76adbf5ccf9af11f6c934fc5ba57ede56029b
150 Risk Score

Malware Insights

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

The PDF file contains a link to a redirector URL, disguised as a cake order form. This suggests a phishing or social engineering attack. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic firing confirms the malicious nature of the embedded URL. The ML_NYX_PDF_MALICIOUS score further supports the malicious classification. No scripts were extracted from this sample, limiting the analysis of its execution behavior.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.me/wix?keyword=lions+christmas+cake+order+form+2019
    • https://cdn.shopify.com/s/files/1/0433/4803/3689/files/20912504459.pdf
    • https://cdn.shopify.com/s/files/1/0428/6477/1238/files/76729131864.pdf
    • https://cdn.shopify.com/s/files/1/0434/8936/2082/files/tosod.pdf
    • https://static.usrfiles.com/ugd/2e4eb4_4ef1c88cc87f405c90e25ca3b9e52ee0.pdf
    • https://static.usrfiles.com/ugd/b8c837_2cd2368c0c364fc0b2f561985575212e.pdf
    • https://static.usrfiles.com/ugd/16a96a_5c6e2df05a5941d3957f79dd29f960b1.pdf
    • https://static.usrfiles.com/ugd/5b9a87_aa250a8c7e8642da82a6d12e3cd94816.pdf
    • https://static.usrfiles.com/ugd/ea78e0_8383f647a5624c12978565deaeaaf799.pdf
    • https://cdn.shopify.com/s/files/1/0430/6354/1913/files/32157234213.pdf
    • https://cdn.shopify.com/s/files/1/0432/6418/0390/files/pidofekunetimaga.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005db4.bin
1b1e32b1c879de8465d204bc3a45bc7fbcfdd570167e99c110964196a93e8dc1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5DB4 5716 bytes
font_01_sfnt_off000070f1.bin
daad3f347a4f42f432ee9983e619a7c063e36761dba5934b469418034847e28e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70F1 1800 bytes
font_02_sfnt_off0000797f.bin
acf7de1f4e612a4702142241986c9eff9e91f8a126a5e9110c192247d00226a3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x797F 10544 bytes

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