Malicious PDF — malware analysis report

Static analysis result for SHA-256 489f586e28797669…

MALICIOUS

PDF

43.9 KB Created: 2020-08-21 22:18:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c10cf13c4e9839fde93ea3c910675ef SHA-1: d36f54e58d6c20ce5f611eaa3d8d2aebf886bffb SHA-256: 489f586e28797669e7143dd9a9edb9601e2d4d5d5946ae475b04b6e4e88abc00
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a link farm hosted on cdn.shopify.com. One of the primary links directs to a known malicious redirector at ttraff.cc, disguised with a keyword related to gender pay gap reporting. This suggests a phishing or scam attempt leveraging SEO techniques to distribute malicious content.

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=gender+pay+gap+reporting+acas+guidance
    • http://files.holidayinslovakia.com/uploads/1/3/0/7/130775045/90a89de7f0e.pdf
    • http://files.significanthealing.com/uploads/1/3/2/8/132816091/4307194.pdf
    • http://files.nmffa.org/uploads/1/3/0/9/130969819/deniz.pdf
    • https://cdn.shopify.com/s/files/1/0427/9212/4572/files/nikon_d5500_manual.pdf
    • https://cdn.shopify.com/s/files/1/0434/5351/3881/files/webepegamab.pdf
    • https://cdn.shopify.com/s/files/1/0428/0087/3631/files/46888714435.pdf
    • https://cdn.shopify.com/s/files/1/0440/0925/9158/files/los_avispones_peter_handke.pdf
    • https://cdn.shopify.com/s/files/1/0438/4319/0946/files/eduard_pernkopf_atlas_of_human_anatomy.pdf
    • https://cdn.shopify.com/s/files/1/0430/7222/5442/files/49734832498.pdf
    • https://cdn.shopify.com/s/files/1/0429/2270/5055/files/94613308227.pdf
    • https://cdn.shopify.com/s/files/1/0431/6132/1634/files/tutowuxajatozo.pdf
    • https://cdn.shopify.com/s/files/1/0428/8164/6758/files/73065846906.pdf
    • https://cdn.shopify.com/s/files/1/0429/0304/4263/files/wagobavojakudives.pdf
    • https://cdn.shopify.com/s/files/1/0430/7537/1159/files/12917281913.pdf
    • https://cdn.shopify.com/s/files/1/0432/4674/7805/files/chevy_equinox_2013_manual.pdf
    • https://archive.acas.org.uk/index.aspx?articleid=5768
    • 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_off00006d76.bin
37ee879e37e8ad87a3cc612e808d9e72388ae7dd0110f1e93a71ee203af88a72		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D76 5344 bytes
font_01_sfnt_off00007fb9.bin
e7da60171f122cfc273156b4f875189ac4b0d484237fe0f78eafca96a63f2f1a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FB9 10132 bytes

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