Malicious PDF — malware analysis report

Static analysis result for SHA-256 3db32f35079a1ae8…

MALICIOUS

PDF

40.5 KB Created: 2020-08-04 19:31:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4cc7be7211b6933dcbeadfe01c426da4 SHA-1: c1c50020ac77bab20042c2ad07060147c99860c6 SHA-256: 3db32f35079a1ae8c4d80e36b3f86744331b39833bf5757efb2860da23db49a3
120 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.cc/pify?keyword=what+is+topology+in+computer+network+pdf'. This indicates the document is designed to redirect users to potentially harmful content. Additionally, the PDF exhibits characteristics of a link farm, with numerous external links, many hosted on cdn.shopify.com, suggesting an attempt to artificially inflate search engine rankings or distribute malicious links. 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=what+is+topology+in+computer+network+pdf
    • http://files.noiwc.info/uploads/1/3/2/6/132681670/821078.pdf
    • http://files.miramesaorchestras.org/uploads/1/3/2/6/132682471/nabosasukobek-sutiselari.pdf
    • http://files.westernenglishsetterclub.org/uploads/1/3/1/4/131437693/2479888.pdf
    • http://zefabuni.ghnu.org/uploads/1/3/1/0/131069839/bezonanoxe-sinosin-warupojipigujux.pdf
    • http://files.inigallery.net/uploads/1/3/1/4/131437246/1314023.pdf
    • https://cdn.shopify.com/s/files/1/0431/0378/1015/files/93680435625.pdf
    • https://cdn.shopify.com/s/files/1/0431/6109/2250/files/xudamel.pdf
    • https://cdn.shopify.com/s/files/1/0432/6653/9673/files/63684470310.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/lamafavikunidamekisuf.pdf
    • https://cdn.shopify.com/s/files/1/0436/0886/6974/files/getguru_help_center.pdf
    • https://cdn.shopify.com/s/files/1/0431/7885/2507/files/vugadepudovusezinu.pdf
    • https://cdn.shopify.com/s/files/1/0434/7746/7288/files/godivoju.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/32506959796.pdf
    • https://cdn.shopify.com/s/files/1/0428/4379/9719/files/xifigoropexubifaji.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4017/files/99558926009.pdf
    • https://cdn.shopify.com/s/files/1/0431/0705/7825/files/dafabufipuvoke.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_off00005fc8.bin
4f0d433df2bb5778673c9648bd878396b7a98c051b6e67425e6742bb59071b71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FC8 5840 bytes
font_01_sfnt_off000073a0.bin
174b2c423ef1f8f180c340e4aa18a3cdff96d0aae3ecb4418adf5b3fb38e5002		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73A0 9724 bytes

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