Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c57998aeb30abd6…

MALICIOUS

PDF

35.3 KB Created: 2020-08-28 11:10:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 05a98b467f6308d5ffe805ca6da9908a SHA-1: 37288f6be3571213c7e4f0f622d1d602f1534199 SHA-256: 8c57998aeb30abd6f9938ae118a2b9d15d84ce0d888a7b2ca4f881e67cc65366
128 Risk Score

Malware Insights

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

The PDF contains a mass of external links, many hosted on Shopify, designed to appear as legitimate documents. One prominent link, 'Flir cloud download', redirects through 'ttraff.ru', a known malicious redirector. This suggests a phishing or social engineering attack aiming to trick users into downloading potentially malicious files or visiting compromised sites. No scripts were extracted, limiting the analysis of direct payload execution.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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.ru/pify?keyword=flir+cloud+download
    • http://puguwo.darcyclarke.us/uploads/1/3/2/6/132696056/gofidu.pdf
    • https://cdn.shopify.com/s/files/1/0428/1729/0406/files/characteristics_of_good_information_p2.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fedixudarat.pdf
    • https://cdn.shopify.com/s/files/1/0430/3051/1779/files/29271257944.pdf
    • https://cdn.shopify.com/s/files/1/0431/3756/4823/files/rupinder_gandhi_2_full_movie_free.pdf
    • https://cdn.shopify.com/s/files/1/0434/0878/5562/files/64273462411.pdf
    • https://cdn.shopify.com/s/files/1/0437/4659/0874/files/13334527566.pdf
    • https://cdn.shopify.com/s/files/1/0435/2484/9815/files/furniture_brochure_design.pdf
    • https://cdn.shopify.com/s/files/1/0434/6239/4008/files/87492273347.pdf
    • https://cdn.shopify.com/s/files/1/0437/6962/6781/files/98516650152.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_off00004e78.bin
65aad5e7b73c1cd845d6de1ffb94373b1ea8d98dcf16ad71c397ef4231c1f390		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E78 4804 bytes
font_01_sfnt_off00005ee4.bin
80cec44c1e76b66eb72fb3aa6d9f4b3b70642c1a814eb700b4d60d95580a7e48		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE4 10012 bytes

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