Malicious PDF — malware analysis report

Static analysis result for SHA-256 894cfcb2606ed252…

MALICIOUS

PDF

38.9 KB Created: 2020-08-16 16:07:34 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7a888262aaeae30d3701ae4248988a3a SHA-1: a4fc41071712e51ec6c3c77bf813aed605717e98 SHA-256: 894cfcb2606ed252e853ac4b2d3fe3cc3e05611f45c80221102e3188736c3594
120 Risk Score

Malware Insights

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

The PDF document contains a link farm, with 22 links pointing to various PDF files hosted on Shopify. One of these links, https://ttraff.ru/pify?keyword=nba+injury+report+today+games, is identified as a malicious redirector. The document body, though heavily obfuscated, contains text related to 'NBA injury report today games', suggesting a lure to trick users into clicking the malicious link. The primary intent appears to be redirecting users to malicious infrastructure.

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=nba+injury+report+today+games
    • http://files.davidmitchell.net/uploads/1/3/2/6/132695586/vifofuvisuniranela.pdf
    • https://cdn.shopify.com/s/files/1/0438/3693/2253/files/nojetomogobur.pdf
    • https://cdn.shopify.com/s/files/1/0432/4697/7179/files/72306444446.pdf
    • https://cdn.shopify.com/s/files/1/0433/7333/0593/files/41774952674.pdf
    • https://cdn.shopify.com/s/files/1/0433/0297/7700/files/95724306668.pdf
    • https://cdn.shopify.com/s/files/1/0427/8494/8380/files/ammi_ji_original_video.pdf
    • https://cdn.shopify.com/s/files/1/0430/7494/5184/files/dafumusafowijogok.pdf
    • https://cdn.shopify.com/s/files/1/0431/9825/1165/files/nogevoxe.pdf
    • https://cdn.shopify.com/s/files/1/0433/4508/4574/files/dilibudasuwopoziv.pdf
    • https://cdn.shopify.com/s/files/1/0434/6436/0100/files/58184113529.pdf
    • https://cdn.shopify.com/s/files/1/0431/2032/8864/files/62556600745.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_off00004f82.bin
f45986c37830ab3c994f5701e835123352d29fa2c0cf1758e72ffee8fe67dd15		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4F82 5536 bytes
font_01_sfnt_off00006243.bin
0953817675a54827c683d8f5b337b907724432d22bdcf5b35168b38ccbe2b5d2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6243 14636 bytes

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