Malicious PDF — malware analysis report

Static analysis result for SHA-256 328978d947da75a9…

MALICIOUS

PDF

47.1 KB Created: 2020-08-01 21:10:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 571a507eb80d41569796b27ae3a4d337 SHA-1: f4a9f7124b6c61e3ef7eddcd4b279f449d5a742b SHA-256: 328978d947da75a9580bf0685687707bae02a43ffd7a3c3aa3c4beb15875c6c4
120 Risk Score

Malware Insights

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

The PDF file contains a lure related to Samsung smart TVs and DIRECTV guides, embedded within its document body. Heuristic analysis identified it as a malicious redirector link pointing to 'ttraff.cc', which is a known malicious infrastructure. The file also exhibits characteristics of a PDF link farm, with numerous external links, many hosted on Shopify. The primary malicious IOC is the redirector URL, which likely leads to a phishing page or malware download.

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=samsung+smart+tv+directv+guide
    • http://files.admcclub.com/uploads/1/3/2/7/132741429/molixukuledepuwun.pdf
    • http://files.jbnomac.com/uploads/1/3/0/9/130969820/noves.pdf
    • http://files.stoewer-cars.com/uploads/1/3/1/4/131438563/02e19ac.pdf
    • http://files.lbnaz.org/uploads/1/3/1/4/131453577/kagozifutofig-jimetejapaxazo-jumurefunirufis-kodutizidek.pdf
    • https://cdn.shopify.com/s/files/1/0434/5911/7206/files/17422654130.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/6338597663.pdf
    • https://cdn.shopify.com/s/files/1/0435/8511/0177/files/77452361935.pdf
    • https://cdn.shopify.com/s/files/1/0431/3910/4917/files/bubikopopomufufa.pdf
    • https://cdn.shopify.com/s/files/1/0430/1013/0073/files/bowizutuvuwaragise.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/70934180934.pdf
    • https://cdn.shopify.com/s/files/1/0437/4275/7029/files/xobumaruxena.pdf
    • https://cdn.shopify.com/s/files/1/0431/1970/6269/files/xodexalogu.pdf
    • https://cdn.shopify.com/s/files/1/0433/4059/5352/files/56317563286.pdf
    • https://cdn.shopify.com/s/files/1/0430/6042/8962/files/mojisujigasofulasizakoji.pdf
    • https://cdn.shopify.com/s/files/1/0436/3649/0398/files/9385644904.pdf
    • https://cdn.shopify.com/s/files/1/0431/4847/6570/files/54641528402.pdf
    • https://cdn.shopify.com/s/files/1/0436/3943/9510/files/36638985102.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_off00007a16.bin
e2057052d117054cc576ab8bd3b66982235dfcea8436ed28dd7dbe49fcc9fc20		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7A16 5392 bytes
font_01_sfnt_off00008c58.bin
f2a97c54f245c11a3cfc52c2c4bdeea981ae9fff684cf8f4084db7fb6325f6e8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C58 10320 bytes

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