Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ce8baa97753a99f…

MALICIOUS

PDF

33.9 KB Created: 2020-08-14 08:46:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 620b6efb63b5a1686b718d299ed86445 SHA-1: f3ebe222a7679ae1f56804157aeea60c5ca23e0e SHA-256: 2ce8baa97753a99f0ad2f8874c86d407551de692efe1dee118a473bbbc817b87
120 Risk Score

Malware Insights

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

The PDF file contains a link to a redirector URL that is associated with malicious activity. The document body, though heavily obfuscated, contains text suggesting a lure for a Siemens manual, which is then linked to the malicious redirector. The presence of numerous external PDF links, many hosted on Shopify, suggests a link farm or SEO poisoning tactic to increase visibility of the malicious content.

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/wb?keyword=siemens%20euroset%205010%20manual%20english
    • http://files.mhcchurch.org/uploads/1/3/1/0/131070520/buwotabiwazi-migewusurolex-lodiwafusugakod-mifegejobino.pdf
    • http://zojirujux.caboconcierge.co/uploads/1/3/0/7/130776791/bd9d676cdf.pdf
    • http://files.columbiacountyuco.com/uploads/1/3/1/6/131607029/6644847.pdf
    • http://files.stephentown-historical.org/uploads/1/3/1/1/131164460/tapulud.pdf
    • https://cdn.shopify.com/s/files/1/0428/4225/9612/files/rutuzajagebote.pdf
    • https://cdn.shopify.com/s/files/1/0446/3286/6979/files/a_revoluo_dos_bichos_em_ingles.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/dosadibevejigavo.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/xuvekalododit.pdf
    • https://cdn.shopify.com/s/files/1/0430/1671/6437/files/mesutebexetidomot.pdf
    • https://cdn.shopify.com/s/files/1/0433/6127/1959/files/87978302840.pdf
    • https://cdn.shopify.com/s/files/1/0433/9679/2471/files/43482750113.pdf
    • https://cdn.shopify.com/s/files/1/0428/8223/6583/files/68109200404.pdf
    • https://cdn.shopify.com/s/files/1/0429/2732/5343/files/25739302201.pdf
    • https://cdn.shopify.com/s/files/1/0436/1761/6034/files/21068476279.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_off0000455c.bin
52ee5f3929d041c1d5fd6c8673ed654bf3a7f053b3e5c9e7c16032b28339afd9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x455C 5520 bytes
font_01_sfnt_off000057f0.bin
5052f3c99663b1a2a11cc25ff7115676234543e44661a1eb6516ed1af538e828		 pdf-font-stream PDF embedded font (sfnt) at offset 0x57F0 10588 bytes

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