Malicious PDF — malware analysis report

Static analysis result for SHA-256 e35be809466eeea9…

MALICIOUS

PDF

42.3 KB Created: 2020-08-10 20:19:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5312784b6fb5ac98ca637d677d229b53 SHA-1: 9f5624a93e7a45f49d83921042b419bb4b035fab SHA-256: e35be809466eeea988e35a3ad5b4c394ed10d8f9c730a3d322d15e2f80885bb6
120 Risk Score

Malware Insights

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

The PDF document contains a malicious redirector link disguised as a utility for converting XPS to PDF. This link, 'https://ttraff.ru/pify?keyword=adobe+reader+xps+to+pdf', is a primary indicator of malicious intent. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to PDF files, suggesting an attempt to manipulate search engine results or distribute further malicious content. The presence of these elements strongly indicates a phishing or redirection attack.

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=adobe+reader+xps+to+pdf
    • http://files.jodiunruh.com/uploads/1/3/0/7/130776589/1cb5a.pdf
    • http://files.2018vote.us/uploads/1/3/1/6/131637150/jumujarujosudopakez.pdf
    • http://files.whimsicoleart.com/uploads/1/3/1/4/131407558/puvimenav.pdf
    • https://cdn.shopify.com/s/files/1/0436/7931/8166/files/tyroil_smoochie_wallace.pdf
    • https://cdn.shopify.com/s/files/1/0430/6183/7981/files/fofosupujovanafiwileniwud.pdf
    • https://cdn.shopify.com/s/files/1/0431/7465/8216/files/74088531646.pdf
    • https://cdn.shopify.com/s/files/1/0430/7160/2855/files/bhagavad_gita_book_in_english.pdf
    • https://cdn.shopify.com/s/files/1/0437/4115/1386/files/tax_rates_for_ay_2020_20.pdf
    • https://cdn.shopify.com/s/files/1/0431/0863/0681/files/91808573376.pdf
    • https://cdn.shopify.com/s/files/1/0432/7620/6240/files/46976931079.pdf
    • https://cdn.shopify.com/s/files/1/0435/4162/7029/files/an_underground_education_richard_zacks.pdf
    • https://cdn.shopify.com/s/files/1/0438/3516/2784/files/fejogijuxozeterapul.pdf
    • https://cdn.shopify.com/s/files/1/0447/6023/6183/files/takazasakenel.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_off00005b39.bin
33674a24a5d3588e827e25e34afb95dc233262a0e937d2fe08a2ba3e382ef156		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B39 5200 bytes
font_01_sfnt_off00006cf3.bin
62ccb612fe2863a6a1d5bcb30c4fbfdd29e3ef5c692398844a75907a91e089d1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6CF3 15740 bytes

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