Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1560d144414738b…

MALICIOUS

PDF

40.1 KB Created: 2020-09-01 19:32:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 401d5c5d2af1cacafa0d9de82d6fbf82 SHA-1: f6f2d6609811fef3142c36499fb2938fe4f51867 SHA-256: e1560d144414738b3816c83b64097b77fe048818b27434d458d3ce1bcbaf5ae7
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a critical heuristic firing for a malicious redirector link, pointing to 'https://ttraff.ru/pify?keyword=crca+material+data+sheet'. Additionally, it exhibits characteristics of a PDF link farm, with numerous links to PDFs hosted on 'static.usrfiles.com'. The document body, though heavily obfuscated, contains the same malicious URL. The primary attack pattern involves luring the user to a malicious site via a deceptive link.

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=crca+material+data+sheet
    • https://static.usrfiles.com/ugd/b8c837_2510d2264deb4f169ffe51de2ba550b7.pdf
    • https://static.usrfiles.com/ugd/c6ac46_6fbb09f9f6d440a0b43085a2b1cb6b93.pdf
    • https://static.usrfiles.com/ugd/895bef_b431a20ebc86466296ac3f9284a610fe.pdf
    • https://static.usrfiles.com/ugd/b8c837_8902b4634f404ea5ae16098248d45256.pdf
    • https://static.usrfiles.com/ugd/aff7ca_fd6fb5fced71474da875c66796a5b33a.pdf
    • https://static.usrfiles.com/ugd/b4609a_1099c56080ff4eea9fdd8cd4547d43b8.pdf
    • https://static.usrfiles.com/ugd/d2751c_ea5b79507b0f4ebb84ba14f77dd884c3.pdf
    • https://static.usrfiles.com/ugd/0adedf_affb3a91f55b4878a3c6216b41360dcd.pdf
    • https://static.usrfiles.com/ugd/599026_05147920daf94840a213908b91037f64.pdf
    • https://static.usrfiles.com/ugd/b8c837_ac91687b732644d1821dfdf29abd2de2.pdf
    • https://static.usrfiles.com/ugd/74a852_dccc382e9c544eeca2b01b175f67c904.pdf
    • https://cdn.shopify.com/s/files/1/0430/2936/4899/files/99383124167.pdf
    • https://cdn.shopify.com/s/files/1/0438/1625/5650/files/dungeoneer_s_pack_weight.pdf
    • https://cdn.shopify.com/s/files/1/0439/8986/0510/files/mcgraw_hill_financial_accounting_chapter_6_answers.pdf
    • https://cdn.shopify.com/s/files/1/0435/6918/4931/files/90788437211.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_off000060be.bin
8a37bb140b12f02263acc9ad2d97b7052fbe50ad162ad0e6847c7e62d975f0de		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60BE 5084 bytes
font_01_sfnt_off000071d1.bin
f6184f7950803908810c42db2236a0311c98fd898161daff8d216d7197062b76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x71D1 9888 bytes

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