Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e9893da1190f254…

MALICIOUS

PDF

40.6 KB Created: 2020-09-18 05:29:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6deff3868e53bb58ac2e6c66615b24d4 SHA-1: a552f0711f4e01106470e9856ee7a31239939ff1 SHA-256: 4e9893da1190f254ba82af65f8af153e698ac38a46b4515a4ab8933ffb8d7fbe
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.club/wix?keyword=is+a+central+city+a+cbd+oil'. This indicates the document's primary purpose is to redirect the user to a potentially harmful external site. The file also exhibits characteristics of a PDF link farm, with numerous embedded URLs, suggesting an attempt to manipulate search engine results or distribute content through a network of linked PDFs. 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.club/wix?keyword=is+a+central+city+a+cbd+oil
    • https://cdn.shopify.com/s/files/1/0430/2631/7473/files/22679669280.pdf
    • https://cdn.shopify.com/s/files/1/0437/1179/1253/files/aws_kinesis_firehose_cloudformation_template.pdf
    • https://cdn.shopify.com/s/files/1/0432/5274/4356/files/9987351186.pdf
    • https://4b1246d1-31de-4a40-8fca-eb370cfaf97b.filesusr.com/ugd/17159d_6445c409a6754a25bbaeb53bfd8c7d76.pdf?index=true
    • https://e07219c5-f38a-494f-a501-c5643a383310.filesusr.com/ugd/078c79_19ddf0e88ec74c0d97058e414f353e85.pdf?index=true
    • https://281d4fdb-148f-43bb-a7a0-1d720586c507.filesusr.com/ugd/808cd0_10e751326c2c4d459ac1286ab8e479af.pdf?index=true
    • https://4b68fca4-48db-46db-902b-9403481d83a3.filesusr.com/ugd/bcc0e4_ebe08071cf9b465ba3b5c02688e18808.pdf?index=true
    • https://cdn.shopify.com/s/files/1/0430/9309/8660/files/8127901405.pdf
    • https://cdn.shopify.com/s/files/1/0428/8518/5702/files/lopimozarawisaso.pdf
    • https://cdn.shopify.com/s/files/1/0431/6338/6016/files/rajitimazipagi.pdf
    • https://cdn.shopify.com/s/files/1/0430/2651/4077/files/jizowajibepizatutomamuk.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_off000061c5.bin
8da925637808a05d354044cbb2ef46efa365a36d48d0795da60e8485bb1bb102		 pdf-font-stream PDF embedded font (sfnt) at offset 0x61C5 5112 bytes
font_01_sfnt_off00007338.bin
27a259412ebf07c128f9a131ba0605f62dfd256f16523aca9a1795d4e1cce516		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7338 10224 bytes

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