Malicious PDF — malware analysis report

Static analysis result for SHA-256 c8866fc8ef9a770b…

MALICIOUS

PDF

47.0 KB Created: 2020-08-19 07:18:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d7152fae4625c20f79a7f6d536b14f6 SHA-1: 1790033ef8810165715e0e1fbc60819dbe062fbe SHA-256: c8866fc8ef9a770ba1697208e9640af44f6a8673e9f69651f1dd0a3bfbb5bf1c
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Phishing: Spearphishing Attachment T1059.001 Command and Scripting Interpreter: PowerShell

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'incident report template' and includes the malicious URL. The primary malicious URL is https://ttraff.ru/pify?keyword=incident+report+template+word+pdf, which is likely used to redirect the user to a further malicious destination. The presence of many Shopify links suggests a link farm technique to improve SEO for 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.ru/pify?keyword=incident+report+template+word+pdf
    • http://files.browardmicrofilm.com/uploads/1/3/1/3/131379219/xiliwedineru_demazije_xilekenevagije_xomalarenive.pdf
    • http://files.marinchorus.org/uploads/1/3/0/8/130813550/4598cceede48526.pdf
    • http://files.benjaminrmark.com/uploads/1/3/0/7/130775102/mefogakopulexerusin.pdf
    • http://files.fairmounthillcf.org/uploads/1/3/1/4/131452878/tulurekamo-nepafiji-favixosefip-tevasijoledok.pdf
    • https://cdn.shopify.com/s/files/1/0436/2466/1154/files/87821026042.pdf
    • https://cdn.shopify.com/s/files/1/0432/9432/6949/files/68058339094.pdf
    • https://cdn.shopify.com/s/files/1/0431/8003/2160/files/60527910593.pdf
    • https://cdn.shopify.com/s/files/1/0428/1332/5471/files/42578733296.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/norojakibi.pdf
    • https://cdn.shopify.com/s/files/1/0437/0667/9447/files/forijubutix.pdf
    • https://cdn.shopify.com/s/files/1/0432/0778/6651/files/75185302824.pdf
    • https://cdn.shopify.com/s/files/1/0432/8770/7806/files/vanguard_imaginary_gift_template.pdf
    • https://cdn.shopify.com/s/files/1/0434/0714/7166/files/anonymous_pro_font_family_free.pdf
    • https://cdn.shopify.com/s/files/1/0438/1723/8685/files/suvepofili.pdf
    • https://cdn.shopify.com/s/files/1/0428/9868/6111/files/87245552593.pdf
    • https://cdn.shopify.com/s/files/1/0433/0684/4315/files/48766291383.pdf
    • https://cdn.shopify.com/s/files/1/0437/2407/9254/files/33632591090.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_off00007ba6.bin
368e5f72b8ed23c797783845db80d97ef1666831d3c218c00bb5644913e1511f
pdf-font-stream PDF embedded font (sfnt) at offset 0x7BA6 5152 bytes
font_01_sfnt_off00008d19.bin
47d2779a1ad1b409cfa4d98a8e90d11437daab01aae6b6b0d6ca2125971365d3
pdf-font-stream PDF embedded font (sfnt) at offset 0x8D19 9868 bytes