Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d96d9d1e55f41cd…

MALICIOUS

PDF

47.9 KB Created: 2020-08-23 02:54:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 93625dacd42d250aaf1762fcc54aae6c SHA-1: f5297f1502acdca792c6ca99e1a50dd37cf3f975 SHA-256: 8d96d9d1e55f41cd08ebdc96821b1d546aef7ea9a3b6109b274f64396f509a9b
120 Risk Score

Malware Insights

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

The PDF file was identified as malicious due to the presence of a large number of embedded links, many of which lead to a redirector service. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags the URL https://ttraff.ru/pify?keyword=tailoring+enchanting+guide+classic. Additionally, the PDF_SEO_LINK_FARM heuristic indicates a mass external PDF link farm, with the dominant host being cdn.shopify.com. The document body contains garbled text but includes the primary malicious URL and several Shopify URLs.

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=tailoring+enchanting+guide+classic
    • http://vepatofes.uhsbe.org/uploads/1/3/1/0/131069839/vapolotefizugeb.pdf
    • http://moxidux.saugatuckyachtclub.com/uploads/1/3/0/7/130775971/ae770395d682c50.pdf
    • http://files.vibrantroad.com/uploads/1/3/1/0/131070845/6631252.pdf
    • http://files.shottsbrassband.com/uploads/1/3/1/4/131411281/sotirazilefuja-tewiketuvum-melun-bopiwawavup.pdf
    • https://cdn.shopify.com/s/files/1/0436/9278/5818/files/95311385070.pdf
    • https://cdn.shopify.com/s/files/1/0431/5345/7320/files/30237886152.pdf
    • https://cdn.shopify.com/s/files/1/0437/8991/0167/files/honda_civic_2016_manual.pdf
    • https://cdn.shopify.com/s/files/1/0429/7513/3859/files/85930748090.pdf
    • https://cdn.shopify.com/s/files/1/0433/7768/8743/files/project_budget_spreadsheet_examples.pdf
    • https://cdn.shopify.com/s/files/1/0438/3624/4118/files/convert_to_word_using_zamzar.pdf
    • https://cdn.shopify.com/s/files/1/0431/2875/0241/files/dejumepebi.pdf
    • https://cdn.shopify.com/s/files/1/0440/7705/6165/files/33010885652.pdf
    • https://cdn.shopify.com/s/files/1/0434/5665/9621/files/autonomy_in_the_workplace.pdf
    • https://cdn.shopify.com/s/files/1/0428/0962/2687/files/degifusezogadub.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_off0000770e.bin
fed06599259c63e319d93994ad71dd3ab5d57813e7569c0fb9ccf2f7b035647e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x770E 5152 bytes
font_01_sfnt_off00008881.bin
86354e1bbf1c340899d6a3add1a66277f98027f6573facfed61127ef1bcc92e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8881 13228 bytes

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