Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf7ab70965aba4a9…

MALICIOUS

PDF

40.2 KB Created: 2020-08-15 01:25:03 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6e7e0eeb935ed8b8e7db6b35573b2b13 SHA-1: 1c8fcde930abd0aad375377040b9800e5ff2a0ea SHA-256: cf7ab70965aba4a95f16df6e3e4dd695cca51eb9480578d4415c1569a7c26cb5
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of the primary links directs to a known malicious redirector at 'https://ttraff.ru/pify?keyword=jeopardy+think+piano+sheet+music'. This suggests the document is designed to lead users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted from this sample.

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=jeopardy+think+piano+sheet+music
    • http://files.zionsvillechamber.org/uploads/1/3/1/8/131856353/pigazodozuzuv.pdf
    • http://files.dudsburycamp.co.uk/uploads/1/3/2/6/132681409/vuzurelufesuki_tuzolibilesivi_fejikixewame.pdf
    • http://files.plastersurrey.co.uk/uploads/1/3/1/3/131381363/nenoxajiwi.pdf
    • http://vexitifax.breemcewan.com/uploads/1/3/0/8/130813528/fetad.pdf
    • http://files.rina-bansuri.com/uploads/1/3/1/4/131406659/kitufaxaga_sidisetiv_vexikitafot.pdf
    • https://cdn.shopify.com/s/files/1/0434/4859/8678/files/vamurevebezomalude.pdf
    • https://cdn.shopify.com/s/files/1/0435/5552/0673/files/bulthaup_b1_preisliste.pdf
    • https://cdn.shopify.com/s/files/1/0430/4899/2930/files/15445692307.pdf
    • https://cdn.shopify.com/s/files/1/0437/7998/1470/files/blender_for_win7_32_bit.pdf
    • https://cdn.shopify.com/s/files/1/0429/9915/2799/files/98281977623.pdf
    • https://cdn.shopify.com/s/files/1/0431/3861/3415/files/64519268739.pdf
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/fipolemo.pdf
    • https://cdn.shopify.com/s/files/1/0437/1759/1189/files/aerodynamics_tutorial.pdf
    • https://cdn.shopify.com/s/files/1/0436/3531/0752/files/vipikozuvati.pdf
    • https://cdn.shopify.com/s/files/1/0428/7404/4579/files/movekugikoz.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_off00005e20.bin
2111d44b4249b081f46abd666840c98f077353868f6d52a6d3f69f8ef0539a1c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E20 5436 bytes
font_01_sfnt_off00007077.bin
a6533aaf1aa569051a6b156a1bf6324e60e3cfc4faa12bc079d56ebdb699ccc2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7077 10420 bytes

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