Malicious PDF — malware analysis report

Static analysis result for SHA-256 c29b80dfadc7553b…

MALICIOUS

PDF

35.3 KB Created: 2020-08-17 06:37:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 475e48058117681209f7d642188d8473 SHA-1: ca45019c209030e2aabd0a1ba27f2bac04ef46e8 SHA-256: c29b80dfadc7553b2ec46377932796ca27f4df1b72e5448ad889244636c2787f
120 Risk Score

Malware Insights

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

The PDF file contains a link farm and a critical heuristic firing for a malicious redirector. The document body, though partially corrupted, contains text related to 'Avery templates 6 labels per sheet' and the malicious URL. This suggests a phishing attempt where the user is tricked into clicking a link that leads to malicious infrastructure, likely for further exploitation or credential harvesting.

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=avery+templates+6+labels+per+sheet
    • http://jubag.erinmariecross.com/uploads/1/3/0/7/130775606/f4197f8.pdf
    • https://cdn.shopify.com/s/files/1/0438/2310/4160/files/xupaguvogaguwumoreveke.pdf
    • https://cdn.shopify.com/s/files/1/0432/8010/5630/files/lands_end_school_uniforms_dress.pdf
    • https://cdn.shopify.com/s/files/1/0431/1498/7669/files/17544371535.pdf
    • https://cdn.shopify.com/s/files/1/0431/9671/1069/files/update_android_10_oneplus_6t.pdf
    • https://cdn.shopify.com/s/files/1/0440/5601/9109/files/fejewenidunimelepugusanu.pdf
    • https://cdn.shopify.com/s/files/1/0431/4873/8720/files/tiraweviramadagonede.pdf
    • https://cdn.shopify.com/s/files/1/0435/8583/1070/files/41853773723.pdf
    • https://cdn.shopify.com/s/files/1/0454/6071/7726/files/99626213972.pdf
    • https://cdn.shopify.com/s/files/1/0431/9582/6336/files/golagopugabu.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_off00004d74.bin
a8cb7cfe6202a59dac5237d6b092ca4a272614805c95828a33ce3a28b2d36369		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D74 5504 bytes
font_01_sfnt_off0000600a.bin
cb0722616da4eae3c08c582bb9fcee7df04ad61a8db59af6903d52843e1f77e0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x600A 9692 bytes

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