Malicious PDF — malware analysis report

Static analysis result for SHA-256 77ae866b6277e212…

MALICIOUS

PDF

43.7 KB Created: 2020-07-17 14:58:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5fd24425e3914a8319dbbd5751c9f2d7 SHA-1: 46eafc2230878da564ef36b69de9c64338aae0c5 SHA-256: 77ae866b6277e2124651439ae5c3900a88709bc5eb9feb2397c0022d160ae320
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded links, many of which point to external PDF files hosted on various platforms. One critical heuristic identified a link to known malicious redirector infrastructure, suggesting an attempt to lead users to harmful content. The document body itself is largely unreadable binary data, but the presence of the links and the heuristic firings strongly indicate a link-farming or redirection attack. 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=ppap%20apqp%20fmea%20pdf
    • http://files.themetalheadbox.com/uploads/1/3/1/3/131380612/4630041.pdf
    • http://files.mariabazzi.com/uploads/1/3/1/1/131164313/add789c5774.pdf
    • http://files.beyondacademia4all.org/uploads/1/3/2/6/132682739/runek.pdf
    • https://waxexuwifum.files.wordpress.com/2020/07/bofivedozebulefijokudisi.pdf
    • https://regumawudabi.files.wordpress.com/2020/06/sevaxeke.pdf
    • https://xatokorus.files.wordpress.com/2020/07/4867219771.pdf
    • https://vavimanuda.files.wordpress.com/2020/07/vomigovaz.pdf
    • https://bazugilaj.files.wordpress.com/2020/07/97977436605.pdf
    • https://buromivuzam.files.wordpress.com/2020/07/67534737408.pdf
    • https://fenetodigut.files.wordpress.com/2020/07/sobeso.pdf
    • https://fojesezowivi.files.wordpress.com/2020/07/19773753130.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/81988232477.pdf
    • https://cdn.shopify.com/s/files/1/0431/6784/2459/files/44455971638.pdf
    • https://cdn.shopify.com/s/files/1/0429/6137/1290/files/88102269991.pdf
    • https://cdn.shopify.com/s/files/1/0433/2149/1621/files/vuloduvametovizuzolepim.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/46946939033.pdf
    • https://cdn.shopify.com/s/files/1/0430/7176/6677/files/tutikatuwojajimar.pdf
    • https://cdn.shopify.com/s/files/1/0434/7976/1061/files/gazedebelujezugubife.pdf
    • https://cdn.shopify.com/s/files/1/0434/7510/7990/files/sowelavowifumoson.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_off00006dd2.bin
b65d89f0ed1d7818094db69b908eed8d256bbf8b6b854a646f30a22ddfb781c9
pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD2 4452 bytes
font_01_sfnt_off00007ce3.bin
7fb3e65478f53836de35b6179234bc2e4fed34134aea45b60b83197187b814f5
pdf-font-stream PDF embedded font (sfnt) at offset 0x7CE3 10976 bytes