Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f5d29d5104580d7…

MALICIOUS

PDF

40.6 KB Created: 2020-08-07 10:20:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5fb896980170e374258e0566bdb96b0 SHA-1: b1261a3b3c0fb8eff444b1c78db4c8b994dab6f4 SHA-256: 4f5d29d5104580d7bf4ac3729e2fed26f7ab320cd2b0e4966d481085120e7f4c
150 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link, which is also present in the document body. This link, 'https://ttraff.ru/pify?keyword=cantatas+de+navidad+pdf', likely leads to a malicious site. The PDF also contains a large number of embedded links to other PDFs, suggesting a link farm for SEO manipulation or to obscure the malicious redirector. No scripts were extracted, but the presence of the malicious redirector and the link farm strongly indicate a phishing or redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=cantatas+de+navidad+pdf
    • http://files.zannagoldhawk.co.uk/uploads/1/3/1/1/131163879/63d83ff.pdf
    • http://files.ajlegalaustralia.com/uploads/1/3/0/7/130740504/dapiritususuf.pdf
    • http://files.alpenviro.com/uploads/1/3/1/4/131407106/fofawawo.pdf
    • http://files.listentofusionn.org/uploads/1/3/2/8/132814465/bidakolipeja-nogofisox.pdf
    • https://cdn.shopify.com/s/files/1/0431/5208/1053/files/10975862255.pdf
    • https://cdn.shopify.com/s/files/1/0432/8597/1110/files/75997507566.pdf
    • https://cdn.shopify.com/s/files/1/0437/6789/0069/files/91980611804.pdf
    • https://cdn.shopify.com/s/files/1/0433/1690/4104/files/14070686058.pdf
    • https://cdn.shopify.com/s/files/1/0432/9173/8277/files/cpu_c_states.pdf
    • https://cdn.shopify.com/s/files/1/0437/0527/0427/files/74086187453.pdf
    • https://cdn.shopify.com/s/files/1/0428/7902/5318/files/suddenly_last_summer_full_text.pdf
    • https://cdn.shopify.com/s/files/1/0438/3404/8669/files/dajimafemumadada.pdf
    • https://cdn.shopify.com/s/files/1/0436/4340/4441/files/73119494849.pdf
    • https://cdn.shopify.com/s/files/1/0432/0244/5475/files/ledokuzipariloxifujevoz.pdf
    • https://cdn.shopify.com/s/files/1/0429/9823/5289/files/renderitem_autocomplete_jquery.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_off00005f2e.bin
a3530ad4e2d60db3a7bb91dd300b25ecdea264a0cd8f661aad6f28538cc46de1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F2E 4872 bytes
font_01_sfnt_off00006fde.bin
c9b8e8904fc444dca1b8c28ab0b648eea5a7a8e9ed6b9fc57ebc90dd7098b7c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6FDE 11088 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.