Malicious PDF — malware analysis report

Static analysis result for SHA-256 b5ba0cf73b2b2577…

MALICIOUS

PDF

43.5 KB Created: 2020-08-04 20:15:41 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5817b31e9acd969f4fc152d355cab293 SHA-1: ed1dcd18e6360386fd86f13d8bf23440812f0d72 SHA-256: b5ba0cf73b2b25773096db0d58d0675146302161527c6ae17348a5584a823bcd
120 Risk Score

Malware Insights

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

The PDF file contains numerous embedded links, with a critical heuristic firing indicating it's a malicious redirector link farm. The primary malicious URL identified is https://ttraff.com/pify?keyword=git+branching+model+pdf, which is likely used to redirect users to a malicious site. The document body, though heavily obfuscated, contains this URL and other benign-looking Shopify URLs, suggesting a social engineering lure to drive traffic to the malicious redirector.

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.com/pify?keyword=git+branching+model+pdf
    • http://files.irishcraftcocktailawards.com/uploads/1/3/1/0/131070051/8050711.pdf
    • http://files.freesixsigmasite.com/uploads/1/3/0/7/130776265/5f68eee15db6de.pdf
    • http://files.alliedennydesigns.com/uploads/1/3/2/3/132303314/0ad87ae40f798.pdf
    • http://files.alexandersheltonyoga.org/uploads/1/3/1/3/131379530/sabifu_zitasaj.pdf
    • http://sukofeguz.beavercreekministries.org/uploads/1/3/1/4/131407901/nudage_fifagobaxufis.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1261535930.pdf
    • https://cdn.shopify.com/s/files/1/0431/4015/3511/files/19396643506.pdf
    • https://cdn.shopify.com/s/files/1/0430/0485/4426/files/zofabavuvo.pdf
    • https://cdn.shopify.com/s/files/1/0430/8254/7361/files/29479270362.pdf
    • https://cdn.shopify.com/s/files/1/0431/9110/7752/files/pofabukopisikuso.pdf
    • https://cdn.shopify.com/s/files/1/0434/8962/4224/files/pesomelesibipano.pdf
    • https://cdn.shopify.com/s/files/1/0434/6265/6152/files/analysis_for_financial_management_10th_edition.pdf
    • https://cdn.shopify.com/s/files/1/0434/1825/5510/files/singer_tradition_2277.pdf
    • https://cdn.shopify.com/s/files/1/0435/8710/9023/files/29198119041.pdf
    • https://cdn.shopify.com/s/files/1/0428/5025/5014/files/gurobi.pdf
    • https://cdn.shopify.com/s/files/1/0433/4141/4555/files/latofawomiwoneme.pdf
    • https://cdn.shopify.com/s/files/1/0429/5085/2762/files/56648938869.pdf
    • https://cdn.shopify.com/s/files/1/0431/3006/0955/files/purovapinavilux.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006009.bin
ba3f1bd845e61f8c4a4b56121ec4f316a0455b359cd81ef018489e831927e6a6
pdf-font-stream PDF embedded font (sfnt) at offset 0x6009 5348 bytes
font_01_sfnt_off00007201.bin
4026150c792bf6b006faa761d68f35da8df48da97971890af326863738348cbf
pdf-font-stream PDF embedded font (sfnt) at offset 0x7201 9576 bytes
font_02_sfnt_off000092ce.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e
pdf-font-stream PDF embedded font (sfnt) at offset 0x92CE 4324 bytes