Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ce21b6a0239012e…

MALICIOUS

PDF

38.2 KB Created: 2020-08-20 09:03:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e378fa6b5b9e0c6bc4c71ffbce88a84 SHA-1: 244426141e55fbf63a24e52f3c8226e7bcbe1a79 SHA-256: 1ce21b6a0239012e3abbef5cd584d0af0173d7ae9b9abf7573d99107ba21d5d1
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, a technique often used for SEO manipulation to improve search engine rankings. One critical heuristic identified a link to a known malicious redirector, ttraff.cc, which is likely the primary malicious payload delivery mechanism. The document body contains garbled text but includes the target URL, suggesting a lure related to movie songs.

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=businessman+movie+songs++naa+songs
    • http://xanolejul.expressivetherapiesutah.com/uploads/1/3/2/8/132814930/1750773.pdf
    • https://cdn.shopify.com/s/files/1/0441/4350/9656/files/python_fraction_class.pdf
    • https://cdn.shopify.com/s/files/1/0437/7778/6018/files/reronifililovugulisedobe.pdf
    • https://cdn.shopify.com/s/files/1/0436/0273/9363/files/13065433948.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/81603963226.pdf
    • https://cdn.shopify.com/s/files/1/0432/0513/2456/files/85121864479.pdf
    • https://cdn.shopify.com/s/files/1/0428/7735/4143/files/puvijawu.pdf
    • https://cdn.shopify.com/s/files/1/0434/4525/6352/files/89201536617.pdf
    • https://cdn.shopify.com/s/files/1/0432/3459/0878/files/13691013859.pdf
    • https://cdn.shopify.com/s/files/1/0428/2672/7580/files/86878549222.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_off0000595a.bin
0453bb06f19880c7dcb372f1a0ae480fec19f91c11235aaef30ce41124e9a3bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x595A 4984 bytes
font_01_sfnt_off00006a43.bin
63a02f24f757a6f16f6f8ceafcf4047086e94e69f55429d574e0dc0f812f95f7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A43 10020 bytes

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