Malicious PDF — malware analysis report

Static analysis result for SHA-256 bab67be6117180b9…

MALICIOUS

PDF

43.7 KB Created: 2020-08-20 10:01:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 9cbadef96689e68d57f9dffab37f1377 SHA-1: d1822c20d4db966f44940460850653b7b044bda2 SHA-256: bab67be6117180b961a16fb708fa6e1571a5aa915e7bfc8c8009dc5a32f2c8a3
128 Risk Score

Malware Insights

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

The PDF file contains multiple embedded links, including one that points to a known malicious redirector at 'https://ttraff.ru/pify?keyword=microsoft+word+baby+announcement+template'. The heuristic 'PDF_MALICIOUS_REDIRECTOR_LINK' confirms this. Additionally, the 'PDF_SEO_LINK_FARM' heuristic indicates a large number of links to other PDFs, suggesting a tactic to distribute malicious content or manipulate search engine results. The presence of a 'SE_DOWNLOAD_BUTTON' heuristic further supports the idea that the document is designed to trick users into clicking malicious links.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=microsoft+word+baby+announcement+template
    • http://files.speech4kidz.com/uploads/1/3/2/7/132740628/126412.pdf
    • http://files.auroraprofessionalhomeopathy.com/uploads/1/3/1/4/131453252/022319d4.pdf
    • http://files.ihsanedu.com/uploads/1/3/2/6/132681488/tomibakegovaloji.pdf
    • http://muxadik.jensensrvpark.com/uploads/1/3/0/7/130739430/deniw.pdf
    • http://files.southernblackhillswater.com/uploads/1/3/0/7/130738503/b493a3e9.pdf
    • https://cdn.shopify.com/s/files/1/0432/4392/9757/files/35429621398.pdf
    • https://cdn.shopify.com/s/files/1/0432/2004/1886/files/sevadijikekujozo.pdf
    • https://cdn.shopify.com/s/files/1/0435/1678/8900/files/nisurenux.pdf
    • https://cdn.shopify.com/s/files/1/0438/3784/9762/files/ultimate_btools_mega.pdf
    • https://cdn.shopify.com/s/files/1/0432/2469/4942/files/90321796114.pdf
    • https://cdn.shopify.com/s/files/1/0432/2924/9694/files/populating_next_right_pointers_in_each_node.pdf
    • https://cdn.shopify.com/s/files/1/0434/0645/9032/files/classification_of_clastic_sedimentary_rocks.pdf
    • https://cdn.shopify.com/s/files/1/0430/1121/1425/files/96191051006.pdf
    • https://cdn.shopify.com/s/files/1/0431/6862/8892/files/bepopomem.pdf
    • https://cdn.shopify.com/s/files/1/0430/1540/5725/files/nugujime.pdf
    • https://cdn.shopify.com/s/files/1/0433/9888/9621/files/42029895880.pdf
    • https://cdn.shopify.com/s/files/1/0427/9091/2159/files/14636660658.pdf
    • https://cdn.shopify.com/s/files/1/0427/4126/8647/files/xaratunofejogirumejix.pdf
    • https://cdn.shopify.com/s/files/1/0433/4052/9816/files/jegoxoduligepilofuka.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_off00006b62.bin
d1bd72c19551b58dcd78de4a6a83f88cc9d4420a8e2566d09c5045e28c536bc0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B62 5640 bytes
font_01_sfnt_off00007e8e.bin
da24d2369a64855150633a3b41bf5a6d65c5e971310e09295e32643e0dff9ca4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E8E 10208 bytes

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