Malicious PDF — malware analysis report

Static analysis result for SHA-256 8256a5301c62e23b…

MALICIOUS

PDF

52.3 KB Created: 2020-07-28 23:08:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 910e1464f8f9ea66084a0affeba371db SHA-1: f4dc12054d601e27acff559704bf40fdbd4fae76 SHA-256: 8256a5301c62e23b689b2e5480f088b45b88e68dfdb077d824f90fa31b3ef0e4
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for PDF_MALICIOUS_REDIRECTOR_LINK, indicating it directs users to a malicious URL. Additionally, PDF_SEO_LINK_FARM suggests the document is part of a link farm, likely for SEO manipulation or to host further malicious content. The primary malicious URL identified is ttraff.cc, which is used to redirect users to other potentially harmful 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/pify?keyword=writing+linear+equations+and+inequalities+worksheet
    • http://files.ephphathaministries.com/uploads/1/3/0/7/130739835/4d2b2a62.pdf
    • http://files.brazilianhairandbeauty.com/uploads/1/3/0/9/130969332/kidikov.pdf
    • http://files.c-eggert.com/uploads/1/3/1/3/131398333/bojuxadijujunilob.pdf
    • http://files.intensifyyoursport.com/uploads/1/3/0/7/130776509/4aca46d2e9b34.pdf
    • http://files.stephanieclayman.com/uploads/1/3/0/7/130738752/5645462.pdf
    • http://files.intensifyyoursport.com/uploa
    • https://cdn.shopify.com/s/files/1/0429/6422/2101/files/90481050300.pdf
    • https://cdn.shopify.com/s/files/1/0431/9802/1793/files/saluxapofos.pdf
    • https://cdn.shopify.com/s/files/1/0436/6978/2693/files/27047909863.pdf
    • https://cdn.shopify.com/s/files/1/0432/3491/8568/files/74823127627.pdf
    • https://cdn.shopify.com/s/files/1/0434/3801/4616/files/41668269708.pdf
    • https://cdn.shopify.com/s/files/1/0432/0965/4440/files/mukurivozaxibegilotuw.pdf
    • https://cdn.shopify.com/s/files/1/0429/4495/4527/files/mafuxoxuwojiripuvew.pdf
    • https://cdn.shopify.com/s/files/1/0435/3658/0759/files/362157335.pdf
    • https://cdn.shopify.com/s/files/1/0429/5809/4495/files/62874204798.pdf
    • https://cdn.shopify.com/s/files/1/0428/8030/3263/files/difekeruraletifopupura.pdf
    • https://cdn.shopify.com/s/files/1/0432/9881/6150/files/30494272579.pdf
    • https://cdn.shopify.com/s/files/1/0428/5192/6183/files/gukajazesegi.pdf
    • https://cdn.shopify.com/s/files/1/0431/1348/0343/files/54897046836.pdf
    • https://cdn.shopify.com/s/files/1/0439/0017/4504/files/zogunosoved.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000070a8.bin
c48dfc753486a6fa6825b7ba6190483c322cf8e4f0d39a260974fad1b4d877ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70A8 5264 bytes
font_01_sfnt_off0000828f.bin
2dbf7cab6972d77fb2eb0a7de406c0dd989ec0d6350f80f923317935002027c8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x828F 13524 bytes
font_02_sfnt_off0000ae1b.bin
39b2f4b99ee08965fd4836f89f628a00cde8346cb181131bba0308e80db8fb67		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAE1B 16092 bytes

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