Malicious PDF — malware analysis report

Static analysis result for SHA-256 3eaa9e4a4e208cfe…

MALICIOUS

PDF

40.6 KB Created: 2020-08-11 15:28:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 803e7ae7fa983cf25a4d6ba32dbf5bd5 SHA-1: ea346521786cff22c1f05582771a346eb5122dc6 SHA-256: 3eaa9e4a4e208cfedb4c5e1dc28e87740dfe5862a128d6a3f6b804c5224f7b1e
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external PDFs hosted on various domains. One critical heuristic identified a link to a known malicious redirector at 'https://ttraff.ru/pify?keyword=piping+isometric+drawing+standards+pdf'. This suggests the document is designed to funnel users through malicious infrastructure, likely for further exploitation or credential harvesting. The presence of numerous Shopify-hosted PDFs, while individually benign, contributes to the link farm tactic.

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=piping+isometric+drawing+standards+pdf
    • http://files.magicalmoves.com.au/uploads/1/3/0/7/130776644/3e1397767cf52.pdf
    • http://zadedapex.cjearle.com/uploads/1/3/1/6/131636948/8591371.pdf
    • http://files.ahs2020national.com/uploads/1/3/1/0/131070612/600544f4.pdf
    • http://files.mainecoastsail.com/uploads/1/3/1/4/131407705/49a7ca02ed.pdf
    • https://cdn.shopify.com/s/files/1/0427/9179/6902/files/32064605474.pdf
    • https://cdn.shopify.com/s/files/1/0437/1959/0040/files/dekaki.pdf
    • https://cdn.shopify.com/s/files/1/0431/1249/7312/files/93843620554.pdf
    • https://cdn.shopify.com/s/files/1/0434/7281/4245/files/ninulawivixixenebelekuv.pdf
    • https://cdn.shopify.com/s/files/1/0429/4931/2665/files/pirotekedanik.pdf
    • https://cdn.shopify.com/s/files/1/0440/2459/4597/files/pojelojasipifitat.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32878299647.pdf
    • https://cdn.shopify.com/s/files/1/0434/1265/2194/files/68988803800.pdf
    • https://cdn.shopify.com/s/files/1/0432/7905/7056/files/14565865975.pdf
    • https://cdn.shopify.com/s/files/1/0431/6810/4610/files/puwodufomajetakodomijovux.pdf
    • https://cdn.shopify.com/s/files/1/0437/1218/4474/files/xemadobadubukojamuxazivi.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_off000060f2.bin
b094cd3fc2bb5b127cfe8fc6b615e7db6e67e367b8499d094f202c1ada6c60aa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x60F2 5536 bytes
font_01_sfnt_off000073b4.bin
abfab2cd368419dbc2e5bf8510fa5f9a306b09a40811f9a1baf08a4a21eb775f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x73B4 9972 bytes

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