Malicious PDF — malware analysis report

Static analysis result for SHA-256 c64436063a56037f…

MALICIOUS

PDF

58.8 KB Created: 2020-08-30 00:09:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 55772443de9fa4d2e6efa6fa63c530b9 SHA-1: a99020eb122c190f7b334c3fe4160d7e9c155968 SHA-256: c64436063a56037f76ca40488c6e5077b1fd999fa5bd506d936db30250884aac
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 a critical heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it points to known malicious infrastructure. Additionally, the PDF_SEO_LINK_FARM heuristic fired, revealing a large number of embedded external links, with the primary redirector URL being https://ttraff.ru/wix?keyword=uss+gerald+ford+class. The document body contains garbled text but includes the same URL, suggesting a lure. The primary purpose appears to be redirecting users to potentially harmful sites.

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/wix?keyword=uss+gerald+ford+class
    • https://cdn.shopify.com/s/files/1/0428/6775/3116/files/etat_de_rapprochement_bancaire_exercice.pdf
    • https://cdn.shopify.com/s/files/1/0433/8070/3382/files/bukoviribefiburul.pdf
    • https://cdn.shopify.com/s/files/1/0427/5165/6102/files/rugibitaxit.pdf
    • https://static.usrfiles.com/ugd/b8c837_3e2cb3b5b63e4742ab0fab769c7a8d8c.pdf
    • https://static.usrfiles.com/ugd/4b874d_2480bf7e73f74cdeadb2a78137290fb5.pdf
    • https://static.usrfiles.com/ugd/60933b_885adb39a1a942a2bcf8d14e7ea3db94.pdf
    • https://cdn.shopify.com/s/files/1/0430/8959/2473/files/55083226601.pdf
    • https://cdn.shopify.com/s/files/1/0430/0318/3258/files/zawawefujimiborurunow.pdf
    • https://cdn.shopify.com/s/files/1/0440/7692/5078/files/nfl_mission_statement.pdf
    • https://cdn.shopify.com/s/files/1/0430/4489/6925/files/jutedopaboguwidosakukor.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_off0000a940.bin
6134dbfcb15b38a0c67749ac10b057d926947055ffb1f7aa3155b50f2a573933		 pdf-font-stream PDF embedded font (sfnt) at offset 0xA940 5180 bytes
font_01_sfnt_off0000bae8.bin
3763e7a5adc86c95b3c5c101f9f6e66b62c5168d310532bde1bfb2ea83fb3251		 pdf-font-stream PDF embedded font (sfnt) at offset 0xBAE8 10652 bytes

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