Malicious PDF — malware analysis report

Static analysis result for SHA-256 c527c23651c4a173…

MALICIOUS

PDF

38.9 KB Created: 2020-08-16 11:54:17 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7f4a071eafdcde2d85d96b554a700aca SHA-1: 6b60eb8ea9b1e6d183aedbcf47590b21bdafb1c0 SHA-256: c527c23651c4a173a0c5650247dea8d90eb604f9a04b00777550337ae01dd7d4
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs. However, one critical link redirects to `https://ttraff.cc/pify?keyword=automatic+voltage+stabilizer+circuit+pdf`, which is known malicious redirector infrastructure. This suggests the document is designed to lure users into clicking the malicious link, likely leading to a further payload download or phishing attempt. 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=automatic+voltage+stabilizer+circuit+pdf
    • http://files.salonrhapsody.com/uploads/1/3/1/3/131381540/tigumevoxexutoji.pdf
    • http://files.bellafurworks.com/uploads/1/3/1/8/131856381/duguvat.pdf
    • http://mijako.saverycreekfurniture.com/uploads/1/3/1/6/131606289/fe3d776.pdf
    • https://cdn.shopify.com/s/files/1/0434/7471/4784/files/19344527745.pdf
    • https://cdn.shopify.com/s/files/1/0430/9437/6599/files/wabolufisajonegigob.pdf
    • https://cdn.shopify.com/s/files/1/0430/8788/8551/files/30927672770.pdf
    • https://cdn.shopify.com/s/files/1/0444/3871/6583/files/robotics_books_download.pdf
    • https://cdn.shopify.com/s/files/1/0435/0319/0181/files/44675548686.pdf
    • https://cdn.shopify.com/s/files/1/0433/7228/2008/files/zilexarowonepuronumige.pdf
    • https://cdn.shopify.com/s/files/1/0437/4695/1319/files/python_curses_example.pdf
    • https://cdn.shopify.com/s/files/1/0434/0069/1879/files/neveteb.pdf
    • https://cdn.shopify.com/s/files/1/0433/9128/7450/files/fafamufidatogupe.pdf
    • https://cdn.shopify.com/s/files/1/0432/1751/8751/files/22650563276.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_off000059f0.bin
aee304ab783b3c3d602be233221bbdc19d36d8ce7ddc02bab3a36ffd9f09fe8e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x59F0 5712 bytes
font_01_sfnt_off00006d52.bin
590f02accc77f2a472a5e8874e13ad335cbc6f1ff451f32a344b79f3956f2a70		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D52 9772 bytes

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