Malicious PDF — malware analysis report

Static analysis result for SHA-256 34c92b1c262f1786…

MALICIOUS

PDF

52.3 KB Created: 2020-08-02 11:55:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ff1f01befb2bb7c881100d1395dd1e52 SHA-1: 8fdc59bd3f5491aaacdde2fb9e5dd06e83c3352a SHA-256: 34c92b1c262f1786c308a77c983a513f55ef8879bcc868f7f2fb7abb3c39ab94
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating a link to known malicious infrastructure. Additionally, PDF_SEO_LINK_FARM indicates a large number of external links, with the primary one pointing to a redirector. The embedded URL in the document body, 'https://ttraff.ru/pify?keyword=philosophical+gourmet+report', is the most critical IOC, likely serving as a gateway to a malicious payload or phishing page.

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=philosophical+gourmet+report
    • http://files.youthultimateprogram.org/uploads/1/3/2/6/132681479/838326da5.pdf
    • http://files.elizabethlaude.com/uploads/1/3/0/7/130740033/jofazavukigiputilos.pdf
    • http://files.bambus-produkte.info/uploads/1/3/1/4/131437291/6660507.pdf
    • https://cdn.shopify.com/s/files/1/0440/0496/6565/files/32192574826.pdf
    • https://cdn.shopify.com/s/files/1/0432/7509/2132/files/dusetoxagiboz.pdf
    • https://cdn.shopify.com/s/files/1/0433/5121/2200/files/lisote.pdf
    • https://cdn.shopify.com/s/files/1/0429/3050/3846/files/sewutabepimela.pdf
    • https://cdn.shopify.com/s/files/1/0432/0706/5757/files/tademitogigebaxenojiti.pdf
    • https://cdn.shopify.com/s/files/1/0432/9511/3374/files/xegalefekinivu.pdf
    • https://cdn.shopify.com/s/files/1/0440/8927/8616/files/enrolled_agent_study_guide.pdf
    • https://cdn.shopify.com/s/files/1/0432/9360/6048/files/28028446932.pdf
    • https://cdn.shopify.com/s/files/1/0429/8155/6375/files/jisejuz.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/denikiv.pdf
    • https://cdn.shopify.com/s/files/1/0429/9289/4105/files/gufomowesez.pdf
    • https://cdn.shopify.com/s/files/1/0431/7741/0720/files/kogomuligiruwiwonoxuw.pdf
    • https://cdn.shopify.com/s/files/1/0433/4744/3865/files/wuwewalodakazit.pdf
    • https://cdn.shopify.com/s/files/1/0429/5042/6787/files/mutazemalepidakubakeserik.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_off00008ff5.bin
8eb8202a5eb3d3a6b402f05cb29f443c6b1ed31be3341a4cbb56112e72632fe6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8FF5 5348 bytes
font_01_sfnt_off0000a1f8.bin
34a0cba9ffb0f2e560d7e8948ac893fee3214039fa2ba2db7bbfc31a4c82b39d		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA1F8 9956 bytes

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