Malicious PDF — malware analysis report

Static analysis result for SHA-256 96ee3a0b66800b99…

MALICIOUS

PDF

43.1 KB Created: 2020-08-17 14:39:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 457810cab4f4054099f3cee6c15ea807 SHA-1: c091d234bc2d33369e298c4c1621ec157924e77b SHA-256: 96ee3a0b66800b99461880e4f179fb4354e573dfef67c5abaf8d4c8dcbdae36b
160 Risk Score

Malware Insights

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

The PDF contains a lure to install the Tor browser, but the embedded link redirects to a malicious domain (ttraff.ru). This indicates a social engineering attack to trick users into visiting a potentially harmful site. The PDF also contains a large number of links, many hosted on Shopify, which is characteristic of SEO spam or link farm techniques used to distribute malware or phishing 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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=tor+browser+portable+linux
    • http://movogerij.graceclt.com/uploads/1/3/1/0/131069992/bonujavuvizepeg.pdf
    • https://cdn.shopify.com/s/files/1/0433/0120/8232/files/rinuwujikeledukoze.pdf
    • https://cdn.shopify.com/s/files/1/0432/4311/0555/files/65469080902.pdf
    • https://cdn.shopify.com/s/files/1/0431/2052/5469/files/sixedifa.pdf
    • https://cdn.shopify.com/s/files/1/0431/4795/2292/files/mapojabewewuponaka.pdf
    • https://cdn.shopify.com/s/files/1/0437/1654/2632/files/ejercicios_silaba_tonica_y_atona.pdf
    • https://cdn.shopify.com/s/files/1/0429/7159/4911/files/tavotegotimetirena.pdf
    • https://cdn.shopify.com/s/files/1/0428/6113/3990/files/36949082628.pdf
    • https://cdn.shopify.com/s/files/1/0434/3804/7384/files/63696642319.pdf
    • https://cdn.shopify.com/s/files/1/0434/0521/3854/files/50935747240.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_off00006b3f.bin
f25895c917f001cc20143bfde24724dd71a5eaa835be93461a67d5b228b5a22c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B3F 5064 bytes
font_01_sfnt_off00007c96.bin
d0bbdc659ba65e4eda38fd2262f5b53e7166f5f9e84591c5fa4676fcdf869244		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7C96 10388 bytes

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