Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb55f938a8768c2a…

MALICIOUS

PDF

64.5 KB Created: 2020-08-12 07:02:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 98f214303e700e24de6b7a4713dab07e SHA-1: 49efd5fc37a134e1d547807e8713e14587f55bab SHA-256: eb55f938a8768c2a12b5a9e9ee80d6196b1ca906519c04c941b1feb5a2e77d7f
128 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

The PDF contains a prominent link that redirects to a malicious URL, disguised as a free download. The PDF also hosts a large number of links to other PDFs, likely for SEO manipulation to increase visibility. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK and PDF_SEO_LINK_FARM strongly indicate a malicious intent to redirect users to harmful content.

Heuristics 4

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/pify?keyword=tamil+songs+keyboard+notes+pdf+free+download
    • http://muvinibul.marionramirez.com/uploads/1/3/1/6/131606577/xodukot.pdf
    • http://files.deborahmilesdesign.co.uk/uploads/1/3/0/8/130814390/fawuboja.pdf
    • http://wusijawu.splashcitysoaps.com/uploads/1/3/0/7/130738720/reraraz.pdf
    • http://files.truahealth.com/uploads/1/3/2/7/132710661/mufigajixaraf-gutorimidusami.pdf
    • https://cdn.shopify.com/s/files/1/0429/3646/7612/files/pujunizezu.pdf
    • https://cdn.shopify.com/s/files/1/0430/2677/6227/files/74939463746.pdf
    • https://cdn.shopify.com/s/files/1/0432/7990/9028/files/gunipenedabo.pdf
    • https://cdn.shopify.com/s/files/1/0428/0591/9903/files/41084076816.pdf
    • https://cdn.shopify.com/s/files/1/0428/7961/5142/files/readme_driven_development.pdf
    • https://cdn.shopify.com/s/files/1/0431/3251/8549/files/besoxomikibelofinufetopub.pdf
    • https://cdn.shopify.com/s/files/1/0432/0067/6003/files/fazoxuxogowanuwa.pdf
    • https://cdn.shopify.com/s/files/1/0439/3867/6894/files/zerul.pdf
    • https://cdn.shopify.com/s/files/1/0439/4339/5483/files/tizuvuvoxasilu.pdf
    • https://cdn.shopify.com/s/files/1/0430/8343/2096/files/74008925008.pdf
    • https://cdn.shopify.com/s/files/1/0433/9482/6396/files/marriage_certificate_online_download.pdf
    • https://cdn.shopify.com/s/files/1/0432/0781/9422/files/sazomiforubabe.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/
    • https://cdn.shopify.com/s/files/

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000afe5.bin
c1d82ea18e47f1cef353a1b5d320edd950a37504341b812b4b7a8c9ea47ce89d
pdf-font-stream PDF embedded font (sfnt) at offset 0xAFE5 5708 bytes
font_01_sfnt_off0000c349.bin
ae5085fc9fdbc6c7b2d3ea006af6d38b0fd9359915d3809e7d561936ffaee9ff
pdf-font-stream PDF embedded font (sfnt) at offset 0xC349 2724 bytes
font_02_sfnt_off0000ceca.bin
2e3a71a50a1645b7368e543315e8255e6f4d8e4450cae5dd9880c939fae1ea8c
pdf-font-stream PDF embedded font (sfnt) at offset 0xCECA 10880 bytes