Malicious PDF — malware analysis report

Static analysis result for SHA-256 c989196b4753ec20…

MALICIOUS

PDF

37.8 KB Created: 2020-07-10 10:04:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8e5a88ad1713439fdce801d18a5b9871 SHA-1: b525e123a7e26041691b6bc19f9d82a695eea161 SHA-256: c989196b4753ec20d53e1e8a8d49360a50f9980ce5c6ef1a6c95f14839d37193
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 PDF files hosted on various domains. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.cc/wb?keyword=present%20perfect%20simple%20and%20continuous%20pdf%20exercise'. The document body also contains this URL and numerous other PDF links, suggesting a link farm or redirection scheme designed to lead users to malicious content. 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.cc/wb?keyword=present%20perfect%20simple%20and%20continuous%20pdf%20exercise
    • http://files.oldwakey.co.uk/uploads/1/3/2/6/132681602/ginirugikix.pdf
    • http://files.yourbirth.com/uploads/1/3/0/9/130970016/zadozexetejot.pdf
    • http://files.schulzeteach.com/uploads/1/3/1/3/131380341/602cd62.pdf
    • http://files.meridianbodycare.com/uploads/1/3/1/8/131857193/6976761.pdf
    • http://files.kaylindy.com/uploads/1/3/1/3/131398386/soxeba_purabibukabi_juzonifef_jazozizagenexu.pdf
    • http://files.12monthbeauty.com/uploads/1/3/0/8/130874128/6301925.pdf
    • http://files.billbrownphotog.com/uploads/1/3/1/1/131163723/6516409.pdf
    • http://files.stevenlarose.com/uploads/1/3/1/3/131379353/2161474.pdf
    • https://vegumakelaj.files.wordpress.com/2020/06/30917469329.pdf
    • https://poxofozej.files.wordpress.com/2020/07/65494711575.pdf
    • https://fusogigati.files.wordpress.com/2020/06/23149472854.pdf
    • https://motonukem.files.wordpress.com/2020/06/62165127871.pdf
    • https://ligarupature.files.wordpress.com/2020/06/75391157257.pdf
    • https://vedusax.files.wordpress.com/2020/07/53440048520.pdf
    • https://mifowoxar.files.wordpress.com/2020/06/wegasibenatapululinanujaw.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/baxumedufimoval.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/94448736580.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/6735074847.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/43396058945.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_off0000576f.bin
d9f0d3a6bd86045de49cd136fd6d8cd43776318cdd628be6d6b1b8c5182ae7b2
pdf-font-stream PDF embedded font (sfnt) at offset 0x576F 5252 bytes
font_01_sfnt_off00006922.bin
a977444936e751dacd47e03163a8da6dbbb6ba2b7e2986c356132c71eec393ea
pdf-font-stream PDF embedded font (sfnt) at offset 0x6922 9636 bytes