Malicious PDF — malware analysis report

Static analysis result for SHA-256 b45d07c3013c193d…

MALICIOUS

PDF

50.3 KB Created: 2020-07-10 10:41:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5d40098d46a77ac3a07fa9e542f88f72 SHA-1: 1974ba850fc223c71119073e592f87248f610844 SHA-256: b45d07c3013c193d909c2aa7943299ed2b1ae35fa52c8c546e1702fa81656aca
120 Risk Score

Malware Insights

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

The PDF file contains a lure of a "red velvet cake recipe" to mask its malicious intent. It utilizes a link farm technique, embedding numerous external links, with a primary redirector at `https://ttraff.ru/wb?keyword=easy%20red%20velvet%20cake%20recipe%20pdf`. This suggests the document is designed to redirect users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, limiting the analysis of direct payload execution.

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/wb?keyword=easy%20red%20velvet%20cake%20recipe%20pdf
    • http://files.ronniespreschool.com/uploads/1/3/1/4/131407632/b0bc9fcc3d6b312.pdf
    • http://files.pentrack.org/uploads/1/3/0/7/130739328/4115c.pdf
    • http://files.wholeyogafood.com/uploads/1/3/1/4/131453024/mevapi-pidep-dudunapefeg-xesopigek.pdf
    • http://files.mylunarsign.com/uploads/1/3/1/8/131857482/6fcae3.pdf
    • http://files.sisterspiritwomensharingspirituality.org/uploads/1/3/2/8/132815154/58853863.pdf
    • http://files.nnslscnippers.com/uploads/1/3/1/6/131637109/7759378.pdf
    • http://files.betteryoufitness.com.au/uploads/1/3/0/7/130775907/f9b55b8f97.pdf
    • https://xifodanupi.files.wordpress.com/2020/06/97962973335.pdf
    • https://ridorekapo.files.wordpress.com/2020/07/bubapikusebagetev.pdf
    • https://ledadubizasa.files.wordpress.com/2020/07/39807180354.pdf
    • https://gozulij.files.wordpress.com/2020/06/vakitazafanidepojizelewor.pdf
    • https://wilewivim.files.wordpress.com/2020/07/jozenisisabijiwas.pdf
    • https://kaxatesuv.files.wordpress.com/2020/06/24856213461.pdf
    • https://mamexoza.files.wordpress.com/2020/06/xuwivaganegegotifote.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/66541571973.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rejupabofutub.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/69143450337.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/13977314479.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_off0000710f.bin
012e02bdb7a2f3e6d578ddf862f605e8d8ece502cdac31e58aaa3da554ca89e3
pdf-font-stream PDF embedded font (sfnt) at offset 0x710F 4904 bytes
font_01_sfnt_off000081de.bin
b66c32950ccef3428960490ae1d8b07d4ae3a7b4d0c870530175e1b1c5ddd8f3
pdf-font-stream PDF embedded font (sfnt) at offset 0x81DE 10836 bytes
font_02_sfnt_off0000a6df.bin
c9557d91917e40dbb2ce09b7ef560a04a9a832ffe2ebcac6b50408a58351272e
pdf-font-stream PDF embedded font (sfnt) at offset 0xA6DF 16092 bytes