Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8c4e064d05b6eaa…

MALICIOUS

PDF

50.9 KB Created: 2020-08-06 01:08:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 640495eae95c089e228d2055332f8976 SHA-1: 3e370aac789b9957a33223e5a932265a91a89271 SHA-256: a8c4e064d05b6eaaaa66422e9dc307befcbc73454f7ba1d5b68cdffd5ac7da79
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to a link farm hosted on Shopify. One of these links, https://ttraff.cc/pify?keyword=alain+badiou+books+pdf, is identified as a malicious redirector. This suggests the document is designed to lead users to malicious content by disguising it as a book download.

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=alain+badiou+books+pdf
    • http://files.vacationgypsy.com/uploads/1/3/1/3/131380627/wofetokaxifod.pdf
    • http://files.taupakikarate.co.nz/uploads/1/3/1/4/131437680/9025311.pdf
    • http://files.chathletics.org/uploads/1/3/1/8/131856627/5a3e10dd0d6.pdf
    • http://files.bodyflowosteopathy.com/uploads/1/3/1/8/131871424/625571.pdf
    • https://cdn.shopify.com/s/files/1/0434/7353/5138/files/wezemerofimixulozuxepab.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/midotikonujeriruzopa.pdf
    • https://cdn.shopify.com/s/files/1/0428/4504/4902/files/boniwatu.pdf
    • https://cdn.shopify.com/s/files/1/0430/3791/7345/files/30501463770.pdf
    • https://cdn.shopify.com/s/files/1/0432/2590/7368/files/lejokevevetemuj.pdf
    • https://cdn.shopify.com/s/files/1/0434/0029/8648/files/tijatenebel.pdf
    • https://cdn.shopify.com/s/files/1/0428/5412/1635/files/buveraresobo.pdf
    • https://cdn.shopify.com/s/files/1/0432/5684/0354/files/google_materials_colors.pdf
    • https://cdn.shopify.com/s/files/1/0439/9484/1246/files/seselokukidaziwus.pdf
    • https://cdn.shopify.com/s/files/1/0435/5453/7624/files/emerald_tablets_translation.pdf
    • https://cdn.shopify.com/s/files/1/0434/3663/8369/files/wogonefenazejukirab.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_off00008b1e.bin
5128e5efefce09be565753bb96c19a4f5b2d3693ac94567efbf9bc709fadacf7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8B1E 5132 bytes
font_01_sfnt_off00009ca5.bin
aa3fe7b495b049aa362d028b1d4ee084e7e847077d77de5151c0124f921f6e16		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9CA5 10168 bytes

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