Malicious PDF — malware analysis report

Static analysis result for SHA-256 a575f42f10b3588c…

MALICIOUS

PDF

48.2 KB Created: 2020-08-04 02:52:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 882020cf44873780c22f80aae493e5ab SHA-1: f1c033005f2930e852ddf6202c572761cd02e541 SHA-256: a575f42f10b3588c0ec7efe8ad5b11a1b47cac5594b39b37843fb7ce1a881ca4
120 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL. The document body, though heavily obfuscated, contains text related to a hip arthroplasty procedure and the malicious URL. The PDF_MALICIOUS_REDIRECTOR_LINK heuristic confirms the link leads to known malicious infrastructure, and the PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, likely for SEO manipulation or to host further malicious content.

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=total+hip+arthroplasty+procedure+step+by+step+pdf
    • http://files.sunpawco.com/uploads/1/3/1/4/131410606/wulawije.pdf
    • http://files.finishingtouchesautodetailing.com/uploads/1/3/0/9/130969454/1edd799.pdf
    • http://files.victoriamarini.com/uploads/1/3/1/4/131454012/5ece1590b.pdf
    • http://files.bluecactuspoolservice.com/uploads/1/3/1/8/131857114/tunuzovu.pdf
    • http://files.bluecactuspoolservice.com/uploads/1/3/1/8/131857114/t
    • https://cdn.shopify.com/s/files/1/0432/5041/7827/files/gideripeloduze.pdf
    • https://cdn.shopify.com/s/files/1/0430/9444/2145/files/natiki.pdf
    • https://cdn.shopify.com/s/files/1/0430/4607/6565/files/74180962099.pdf
    • https://cdn.shopify.com/s/files/1/0431/6043/6887/files/99996512338.pdf
    • https://cdn.shopify.com/s/files/1/0433/1533/1227/files/78491223559.pdf
    • https://cdn.shopify.com/s/files/1/0435/1646/1211/files/77348079729.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/280680.pdf
    • https://cdn.shopify.com/s/files/1/0433/0654/9406/files/zajas.pdf
    • https://cdn.shopify.com/s/files/1/0430/1501/2511/files/rasapopilisumek.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/23063093424.pdf
    • https://cdn.shopify.com/s/files/1/0430/8644/6746/files/16256492395.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_off00007e29.bin
dcaefe0db47531c0ec16bc50ef8e77bc2a9d2472eb84d0917d31988f8a07278b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7E29 5432 bytes
font_01_sfnt_off00009099.bin
a8de6ca56438ee277558bf752c47ca191672cdedce1aa828e5f2f2ad7bab5a1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9099 10276 bytes

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