Malicious PDF — malware analysis report

Static analysis result for SHA-256 d935e56eea52286f…

MALICIOUS

PDF

41.0 KB Created: 2020-08-12 21:10:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4e5ad92d999d62b870139d9ca64357af SHA-1: 17bef7974ecf8abe20bfdc34029fe9c56bf8c8cd SHA-256: d935e56eea52286f4cef9faa4f48ed1557de0d2aa1d95b13069304219e1cedac
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to benign Shopify domains, but one critical link directs to a known malicious redirector at ttraff.com. The document body, though heavily obfuscated, contains the text 'Html to pdf convert online free' and the malicious URL, suggesting a social engineering lure. The presence of a malicious redirector indicates an attempt to lead the user to a site that likely hosts further malicious content or phishing pages.

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.com/pify?keyword=html+to+pdf+convert+online+free
    • http://files.imagesbyk.com/uploads/1/3/1/4/131455198/telademubakedijezik.pdf
    • http://fedefo.bluestarjumpers.com/uploads/1/3/1/4/131453109/c300ec9981d40.pdf
    • http://files.utahskillsusa.org/uploads/1/3/1/3/131398184/620f84abd46d0.pdf
    • https://cdn.shopify.com/s/files/1/0433/4718/1718/files/mdn_javascript_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0444/2813/2519/files/xusenerazom.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/93861148098.pdf
    • https://cdn.shopify.com/s/files/1/0431/3173/2125/files/22440137996.pdf
    • https://cdn.shopify.com/s/files/1/0435/2186/7930/files/1922947734.pdf
    • https://cdn.shopify.com/s/files/1/0432/6631/0299/files/emuparadise_tampermonkey_script.pdf
    • https://cdn.shopify.com/s/files/1/0432/0513/2456/files/25364230609.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4013/files/3426964925.pdf
    • https://cdn.shopify.com/s/files/1/0431/4546/1909/files/joe_weider_bodybuilding_training_system.pdf
    • https://cdn.shopify.com/s/files/1/0435/3107/5743/files/89931442642.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004dcf.bin
0377d92078e32ef96c49063bde87171875de1193261342f4c810686595faaf44		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4DCF 4936 bytes
font_01_sfnt_off00005e84.bin
9ea2b1b8e5bf0cfc3e77d7d859d1e518a1b60d865e3e3f1e777875433974455c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E84 9984 bytes
font_02_sfnt_off000080e9.bin
57ddb710db4c46e909659c2af6120e047c12820e482b5ba9df346584e33ddf2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80E9 16460 bytes

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