Malicious PDF — malware analysis report

Static analysis result for SHA-256 ecaaeb1af6b019eb…

MALICIOUS

PDF

41.1 KB Created: 2020-08-10 22:41:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 72554b860fad3ccaff581b596f6bb548 SHA-1: faa5dd5737b7a00b95503b46aad5f344e2af9476 SHA-256: ecaaeb1af6b019ebf6f10aa3ce00338a5804825386d308d03996ac41a51062d1
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=printer+brother+mfc+j2330dw+pdf'. This URL is embedded within the document body, suggesting an attempt to lure the user into clicking it. The presence of a large number of external PDF links, many hosted on Shopify, further indicates a link farm or SEO manipulation tactic to distribute malicious content. No scripts were extracted, but the primary malicious activity appears to be redirection via the embedded URL.

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=printer+brother+mfc+j2330dw+pdf
    • http://files.jaredjaggers.com/uploads/1/3/2/7/132740214/05636.pdf
    • http://files.rubbosaltshop.com/uploads/1/3/2/6/132682585/jetafajedidodid_bevidotedajeki_nalisitaw_tekajelejezul.pdf
    • http://files.longosfinancialmarket.com/uploads/1/3/1/3/131398338/boboku.pdf
    • http://files.redcoaching.co.uk/uploads/1/3/0/8/130874160/dopofurapozusi_nalodogezin.pdf
    • http://ritovipi.toriseabovepoverty.com/uploads/1/3/1/3/131380480/sozoz.pdf
    • https://cdn.shopify.com/s/files/1/0431/0591/0935/files/rise_of_the_guardians_book.pdf
    • https://cdn.shopify.com/s/files/1/0437/6385/9617/files/nomenclature_of_alcohols.pdf
    • https://cdn.shopify.com/s/files/1/0432/8806/8254/files/papuwiramedurugopuze.pdf
    • https://cdn.shopify.com/s/files/1/0429/5180/3033/files/6617235000.pdf
    • https://cdn.shopify.com/s/files/1/0431/2806/2109/files/47099084905.pdf
    • https://cdn.shopify.com/s/files/1/0428/5494/0828/files/5928443033.pdf
    • https://cdn.shopify.com/s/files/1/0431/3517/2770/files/aptitude_topics_list.pdf
    • https://cdn.shopify.com/s/files/1/0434/4673/0904/files/78511438640.pdf
    • https://cdn.shopify.com/s/files/1/0440/3170/5238/files/12_fruits_of_the_holy_spirit_and_their_meanings.pdf
    • https://cdn.shopify.com/s/files/1/0433/3761/3461/files/38168602172.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_off00005be6.bin
e558b07bd69c54cf5d099721cc6d191974fd873f3592dcc21e5b582660113468		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5BE6 5720 bytes
font_01_sfnt_off00006f3e.bin
c5141cd694d083cbfee7f389c7c181c08f72522af63400bd22d53d1b5481ef80		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F3E 12612 bytes

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