Malicious PDF — malware analysis report

Static analysis result for SHA-256 80024d1770a84469…

MALICIOUS

PDF

41.6 KB Created: 2020-08-02 03:00:37 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4a68021ec77f1c7ea2faf439f41dffb3 SHA-1: 72a2199d669742a1e754e9f6e8c35fcc871c87ce SHA-256: 80024d1770a84469ef33cc2c69d5cd7e49b0a2733a34391bed120540e2f13de6
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it contains links to known malicious redirector infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic detected a mass of external PDF links, with the primary malicious URL being https://ttraff.cc/pify?keyword=git+change+origin+uri. The document body, though heavily obfuscated, contains this URL and other embedded links, suggesting a social engineering attack aimed at redirecting users to potentially harmful content.

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=git+change+origin+uri
    • http://files.luciannawhittle.com/uploads/1/3/1/4/131438046/rasaki.pdf
    • http://files.pinkcheeksbymadeleine.com/uploads/1/3/0/9/130969700/63c5efe8.pdf
    • http://files.celandscapers.com/uploads/1/3/1/3/131384432/17515b655.pdf
    • http://files.heavenlysly.com/uploads/1/3/1/4/131453022/ruxew.pdf
    • https://cdn.shopify.com/s/files/1/0435/7298/6015/files/dozawoxatexopiroza.pdf
    • https://cdn.shopify.com/s/files/1/0435/9153/2699/files/towineran.pdf
    • https://cdn.shopify.com/s/files/1/0432/1096/5147/files/6395846813.pdf
    • https://cdn.shopify.com/s/files/1/0431/4782/1212/files/ruguz.pdf
    • https://cdn.shopify.com/s/files/1/0430/6521/3089/files/71298301926.pdf
    • https://cdn.shopify.com/s/files/1/0429/1801/9235/files/favoligib.pdf
    • https://cdn.shopify.com/s/files/1/0433/4456/0281/files/7737601735.pdf
    • https://cdn.shopify.com/s/files/1/0434/2241/7046/files/39461526086.pdf
    • https://cdn.shopify.com/s/files/1/0437/2883/0632/files/75100210075.pdf
    • https://cdn.shopify.com/s/files/1/0432/4183/2615/files/rajijozebuxopemafe.pdf
    • https://cdn.shopify.com/s/files/1/0431/2154/1271/files/86797081300.pdf
    • https://cdn.shopify.com/s/files/1/0432/0326/4667/files/94113838592.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/7868051279.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_off00005bb1.bin
8216b79b72a6890506984cf9bf9721408fea1d3cda4eece916bcf5c44019f9a0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BB1 4880 bytes
font_01_sfnt_off00006c4b.bin
579ffec791bb853b05baaaa08dc330c3752189bd1d388ad37fa7b5ce787b9dca		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6C4B 14216 bytes

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