Malicious PDF — malware analysis report

Static analysis result for SHA-256 28e154b95774de5e…

MALICIOUS

PDF

33.4 KB Created: 2020-08-03 14:03:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91ff031bbf55a3a78b3e860e916d514c SHA-1: d8ceff58c148c8e6ab3523b5a0e9c4719084551d SHA-256: 28e154b95774de5ef3930226a6c363b751b8d4c8a67dd44bf338bb5234e9b103
120 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a malicious URL, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains text related to a PDF download and the malicious URL itself. The PDF_SEO_LINK_FARM heuristic suggests the document is part of a larger link farm designed to attract traffic.

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.com/pify?keyword=vehicle+dynamics+theory+and+application+pdf+free+download
    • http://files.piecemakersquiltshop.com/uploads/1/3/1/3/131383541/jitomi.pdf
    • http://files.chasteensadorabulls.com/uploads/1/3/0/7/130776433/walefuzede.pdf
    • http://files.hermannvetclinic.com/uploads/1/3/1/0/131070911/mutuxum-wirixulo.pdf
    • http://files.earthsideholistic.com/uploads/1/3/0/8/130874050/fuzuzu.pdf
    • https://cdn.shopify.com/s/files/1/0430/0891/7657/files/97423217482.pdf
    • https://cdn.shopify.com/s/files/1/0434/3765/4178/files/jazizulepa.pdf
    • https://cdn.shopify.com/s/files/1/0431/5725/8401/files/jikomajijafizo.pdf
    • https://cdn.shopify.com/s/files/1/0430/2438/4154/files/gewuxux.pdf
    • https://cdn.shopify.com/s/files/1/0438/3349/1606/files/liberojezemiko.pdf
    • https://cdn.shopify.com/s/files/1/0431/0794/2549/files/javixivajegakagumo.pdf
    • https://cdn.shopify.com/s/files/1/0435/5912/5160/files/41890460589.pdf
    • https://cdn.shopify.com/s/files/1/0438/9378/4728/files/561692385.pdf
    • https://cdn.shopify.com/s/files/1/0428/7247/1715/files/mogifivusiwisu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0670/5311/files/nedejutolisemus.pdf
    • https://cdn.shopify.com/s/files/1/0429/0933/5715/files/vazixugegulesedenaduzex.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_off00004666.bin
f2dc161e30b16feac5a429b546519f29689bd992d11c62b034c0a89162a8bf87		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4666 5556 bytes
font_01_sfnt_off0000593a.bin
fc38ff190a10cd69f3319cb2ae683e5cdaa97b7cbb54f511842bf9996cfc823f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x593A 9156 bytes

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