Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9c532e76a4fe703…

MALICIOUS

PDF

53.1 KB Created: 2020-08-11 07:14:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 744f6ff624f6f2f8daebf459e7a3155c SHA-1: 98fb78925c511aba677794b1fb82ddcfed8bb259 SHA-256: e9c532e76a4fe703b19cdf166f3bf4822ba3e972dc73e0aa7c6ceb325db6e60f
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link directs to a known malicious redirector at 'ttraff.ru'. The document body, though heavily obfuscated, contains the same URL and keywords suggesting a lure to disguise malicious redirection. The primary intent appears to be redirecting the user to malicious infrastructure via the embedded link.

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.ru/pify?keyword=base+de+datos+mysql+ejemplo+pdf
    • http://files.dianeshaneschuldt.com/uploads/1/3/1/0/131070912/tazetirami.pdf
    • http://files.ninjamagik.com/uploads/1/3/0/7/130738673/eaf9eec3494ec.pdf
    • http://files.steppingstonesplaycenter.com/uploads/1/3/2/6/132681325/telisexogek_tafuvujowu_bulalokusonug_xodezonasigig.pdf
    • https://cdn.shopify.com/s/files/1/0434/4751/7341/files/kijazokobuworub.pdf
    • https://cdn.shopify.com/s/files/1/0450/7946/2040/files/gabby_bernstein_super_attractor.pdf
    • https://cdn.shopify.com/s/files/1/0430/4103/0293/files/9394676650.pdf
    • https://cdn.shopify.com/s/files/1/0431/2239/3244/files/segatop.pdf
    • https://cdn.shopify.com/s/files/1/0437/4256/0407/files/wisorafap.pdf
    • https://cdn.shopify.com/s/files/1/0433/9564/5589/files/4800177206.pdf
    • https://cdn.shopify.com/s/files/1/0431/7731/2405/files/25160385940.pdf
    • https://cdn.shopify.com/s/files/1/0440/3727/5813/files/time_servers_ip.pdf
    • https://cdn.shopify.com/s/files/1/0431/8350/5559/files/69567851398.pdf
    • https://cdn.shopify.com/s/files/1/0431/5847/0807/files/74830248665.pdf
    • https://cdn.shopify.com/s/files/1/0430/4509/3533/files/tipurenuj.pdf
    • https://cdn.shopify.com/s/files/1/0428/9491/7799/files/69808446039.pdf
    • https://cdn.shopify.com/s/files/1/0431/3363/2661/files/tipululodufubiwevidekupod.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_off00008c24.bin
e966b55c77fbb1729c984f7e80e8d2720efb2af0968568a2dc77e9c3111623d0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8C24 5444 bytes
font_01_sfnt_off00009eaa.bin
f59be7e623e627e1a540b89b107788c665362e1a97902c5074c1d313fbdda8b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9EAA 11948 bytes

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