Malicious PDF — malware analysis report

Static analysis result for SHA-256 953a981938bb63a8…

MALICIOUS

PDF

48.3 KB Created: 2020-07-14 21:13:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8dba2f65c231886fc3c3deb415505590 SHA-1: 396b8b72c3f772b98a2bc4acecbac38ed3c21473 SHA-256: 953a981938bb63a88f63e19c4f451cde9f30a8867868cfe5039115aa6c4b6d3b
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains embedded links that redirect to malicious infrastructure, specifically identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, suggests a lure related to a 'Dewalt 14 chop saw manual'. The PDF_SEO_LINK_FARM heuristic indicates a large number of outbound links, likely for SEO manipulation or to obscure the malicious redirector. The primary malicious IOC is the redirector URL.

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=dewalt%2014%20chop%20saw%20manual
    • http://files.giftedsupportnetwork.org/uploads/1/3/1/4/131453097/4810043.pdf
    • http://files.woodlawncountryclubfc.com/uploads/1/3/0/7/130775970/1de93d2cc.pdf
    • http://files.potamus-soap.com/uploads/1/3/1/4/131482926/4538079.pdf
    • https://wizobumak.fil
    • https://kofimefek.files.wordpress.com/2020/07/34933170493.pdf
    • https://forogov.files.wordpress.com/2020/07/giselitoganokobek.pdf
    • https://boxavik.files.wordpress.com/2020/07/fikisulugavarisub.pdf
    • https://nibixodowoxo171687391.files.wordpress.com/2020/06/xuvuwifosifelubonada.pdf
    • https://zepajexoj.files.wordpress.com/2020/07/fogudurixedigesakigigago.pdf
    • https://wizobumak.files.wordpress.com/2020/06/39151010917.pdf
    • https://tidujexibego.files.wordpress.com/2020/06/vofotelojogazezutazat.pdf
    • https://dodaxiji.files.wordpress.com/2020/06/jinalobigo.pdf
    • https://lemanesoneme.files.wordpress.com/2020/06/13620801436.pdf
    • https://cdn.shopify.com/s/files/1/0431/1423/4017/files/49219491162.pdf
    • https://cdn.shopify.com/s/files/1/0427/6404/2396/files/damuwasizebuzenex.pdf
    • https://cdn.shopify.com/s/files/1/0432/8531/5744/files/41005139131.pdf
    • https://cdn.shopify.com/s/files/1/0429/9925/1093/files/xasokogudenes.pdf
    • https://cdn.shopify.com/s/files/1/0429/7188/9815/files/nuxovimil.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/nexunalazuzifoginiwaboliz.pdf
    • https://cdn.shopify.com/s/files/1/0430/7438/8119/files/vusesipo.pdf
    • https://cdn.shopify.com/s/files/1/0433/0127/3750/files/derosejudov.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/1544273085.pdf
    • https://cdn.shopify.com/s/files/1/0430/0223/2983/files/jamivukosonoz.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_off00007d57.bin
e2e903767baf09022fffc163b5116d22db7ea414fe18a7e88b16564a5b366441
pdf-font-stream PDF embedded font (sfnt) at offset 0x7D57 5144 bytes
font_01_sfnt_off00008ed3.bin
7e6cc2c7e6801a919260977c932bdd2af187168623efe3599a827142b7107f76
pdf-font-stream PDF embedded font (sfnt) at offset 0x8ED3 10968 bytes