Malicious PDF — malware analysis report

Static analysis result for SHA-256 a617ccbf70e9d85b…

MALICIOUS

PDF

33.2 KB Created: 2020-07-09 11:59:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 84fd70964811cca7cb4a20e6fc20aed5 SHA-1: 73f42f172b7c1fde0768aa45f225f829452bfdaa SHA-256: a617ccbf70e9d85b9dde1aea3b92014021c53a091392df07c21808a254a2a1f4
120 Risk Score

Malware Insights

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

The PDF document contains a large number of embedded links, characteristic of a link farm, designed to redirect users to various external sites. One of the primary links, 'https://ttraff.ru/pify?keyword=ceh+v9+certified+ethical+hacker+version+9+study+guide+pdf', points to known malicious redirector infrastructure. The document body, while containing garbled text, includes references to a 'CEH v9 certified ethical hacker' study guide, suggesting a lure to entice users to click on the malicious links.

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=ceh+v9+certified+ethical+hacker+version+9+study+guide+pdf
    • http://files.theartoftheheart-chester.com/uploads/1/3/2/6/132681951/fuginaluge_waluzi.pdf
    • http://files.tiffanyharrisonhome.com/uploads/1/3/1/3/131383977/8603988.pdf
    • http://files.stcatherineschurchlittlehampton.org/uploads/1/3/2/8/132815004/bodexaka-murawe.pdf
    • http://files.realestatepract.com/uploads/1/3/0/8/130873876/dekaju_gimutilatu_buxevu.pdf
    • http://files.triplejackproductions.com/uploads/1/3/0/9/130969600/70a9b67.pdf
    • http://files.rockport-pewter.com/uploads/1/3/2/3/132303020/popax.pdf
    • http://files.sillassenhalf.com/uploads/1/3/0/9/130969555/bevijidu.pdf
    • http://files.jenmanteigas.com/uploads/1/3/0/8/130874544/mafamirawusino.pdf
    • http://files.suncoastsoul.com/uploads/1/3/1/3/131379612/baretanemomimu.pdf
    • https://vupejesos.files.wordpress.com/2020/06/29367164682.pdf
    • https://togikozif.files.wordpress.com/2020/07/95325937868.pdf
    • https://xuxosasi.files.wordpress.com/2020/06/kexodidupumumabajasexet.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/ninitegabi.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zosakasebiribo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/46287179129.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pepefawabibuf.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_off000045d3.bin
fc5cb4a58736429e4e8898f258028bba1ae5c6aa647141da203213fa61c8f0ce		 pdf-font-stream PDF embedded font (sfnt) at offset 0x45D3 5704 bytes
font_01_sfnt_off00005942.bin
5dfee443b9a2b7cc50cdea53b4b22855699731d968b303b6a28f7cbf0418d033		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5942 8968 bytes

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