Malicious PDF — malware analysis report

Static analysis result for SHA-256 d08900cdff143a81…

MALICIOUS

PDF

42.3 KB Created: 2020-08-19 18:13:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 91444edac9b362dfdde66fa7a5f85820 SHA-1: 7779c2d76563d166962c8bd2a62c34dcfd24536a SHA-256: d08900cdff143a81b23b1d39cdde8088017aa4c7eae2d219c2629326390e9af2
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a significant number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, 'https://ttraff.cc/pify?keyword=bole+chudiyan+song++bestwap.+in', is identified as a malicious redirector. The document body, though heavily obfuscated, appears to contain references to this malicious URL and other PDF files, suggesting an attempt to drive traffic to malicious infrastructure. The presence of a malicious redirector and a link farm indicates a probable phishing or content-luring attack.

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=bole+chudiyan+song++bestwap.+in
    • http://files.janesmithacu.co.uk/uploads/1/3/0/7/130776120/3854017.pdf
    • http://files.albertvilleband.com/uploads/1/3/0/7/130740205/c642fdf1cc5c.pdf
    • https://cdn.shopify.com/s/files/1/0430/2848/0157/files/ganefumebuxige.pdf
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/60979460938.pdf
    • https://cdn.shopify.com/s/files/1/0430/6753/9623/files/81340446220.pdf
    • https://cdn.shopify.com/s/files/1/0428/9557/3158/files/54593820963.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/77363931764.pdf
    • https://cdn.shopify.com/s/files/1/0434/5511/9513/files/puvikipel.pdf
    • https://cdn.shopify.com/s/files/1/0430/7678/0192/files/defujomotabenofiduno.pdf
    • https://cdn.shopify.com/s/files/1/0434/4764/8406/files/55309801384.pdf
    • https://cdn.shopify.com/s/files/1/0434/0816/2974/files/34936865516.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_off00005a62.bin
b86d105b86b93e36fbbe5c3d88ad44721714c44056381ed0f1ffc8c7be279485		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5A62 5656 bytes
font_01_sfnt_off00006db1.bin
ed1ac8cc8566ef7c1feaa120593bd3f2a4a156caa3e96617e70012c68a56f986		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DB1 15172 bytes

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