Malicious PDF — malware analysis report

Static analysis result for SHA-256 268044fbfaf6353e…

MALICIOUS

PDF

39.6 KB Created: 2020-08-29 00:42:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4c6475baae6ffd8c62ae9300aeedc28a SHA-1: f97078b5850506f21d6a50a7577acba0f8bbf2f3 SHA-256: 268044fbfaf6353e6ce6efa46a6afcbe6f0b2f80628af42e5882ea67f4437fd1
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating a link to a known malicious redirector. Additionally, PDF_SEO_LINK_FARM suggests the document is part of a link farm, with numerous external links embedded. The primary malicious URL identified is https://ttraff.cc/wix?keyword=simple+social+tools+authorization+code. The document body contains garbled text but includes the same URL and a reference to a PDF hosted on cdn.shopify.com, suggesting a coordinated effort to drive traffic to potentially malicious 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.cc/wix?keyword=simple+social+tools+authorization+code
    • https://cdn.shopify.com/s/files/1/0433/6625/2703/files/7397679881.pdf
    • https://cdn.shopify.com/s/files/1/0431/8353/8340/files/chinkara_kinnaram_lyrics.pdf
    • https://cdn.shopify.com/s/files/1/0438/4469/8272/files/rurudogesakabagazikis.pdf
    • https://cdn.shopify.com/s/files/1/0434/1451/9966/files/bohemian_rhapsody_notes_piano.pdf
    • https://static.usrfiles.com/ugd/b8c837_1f3dcc434ccf4713bb7ef50dd056a26e.pdf
    • https://cdn.shopify.com/s/files/1/0450/1274/6390/files/verb_tenses_worksheets_with_answers.pdf
    • https://cdn.shopify.com/s/files/1/0429/5937/2439/files/xufugikitesefaluwa.pdf
    • https://cdn.shopify.com/s/files/1/0430/3116/7137/files/causas_autismo_infantil.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/mijupejidiseno.pdf
    • https://cdn.shopify.com/s/files/1/0428/3020/0991/files/tavapizekarubil.pdf
    • https://cdn.shopify.com/s/files/1/0430/6560/6301/files/29959558396.pdf
    • https://cdn.shopify.com/s/files/1/0431/8127/7352/files/91734792497.pdf
    • https://cdn.shopify.com/s/files/1/0433/5727/4261/files/corded_phone_with_answering_machine_nz.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_off00005b65.bin
0f225b20d684254a0002baffcfbc5d374bacbce1087e68087d73488f6c3d73c1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B65 5468 bytes
font_01_sfnt_off00006dca.bin
7e2b2f68581bfc555f5a1d428e91732e23b7ca1c613a4ebc1142ffac7676a849		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DCA 10536 bytes

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