Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ee4c186c8d1d7d5…

MALICIOUS

PDF

49.9 KB Created: 2020-07-28 09:58:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 862a6c9c5fed0403eb2aa2cb44d3a4a5 SHA-1: bd100cce3c9c288c2512e90e3030c857d0a88fc0 SHA-256: 1ee4c186c8d1d7d5438324a0210f70341ac431c10454042ea2c54858452b7d4b
120 Risk Score

Malware Insights

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

The PDF file contains multiple heuristics indicating malicious intent, specifically linking to a known malicious redirector and a large number of external PDF links, suggesting a link farm for SEO manipulation or phishing. The primary malicious URL identified is ttraff.com, which redirects to a page related to a 'solo guide'. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create PDFs from web content, further supporting the lure aspect.

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=kel%2527+thuzad+solo+guide
    • http://files.luketti.com/uploads/1/3/1/4/131452735/bisadujil.pdf
    • http://files.johnmfraser.com/uploads/1/3/0/7/130776878/mekuxedol_letejev_maxixagatoduwej.pdf
    • http://files.njcomphi.com/uploads/1/3/1/3/131379991/8340289.pdf
    • https://cdn.shopify.com/s/files/1/0437/3420/4568/files/91536786230.pdf
    • https://cdn.shopify.com/s/files/1/0427/6856/4380/files/87469457517.pdf
    • https://cdn.shopify.com/s/files/1/0439/2756/8552/files/vasowepakibusapusot.pdf
    • https://cdn.shopify.com/s/files/1/0434/8428/3033/files/11102053635.pdf
    • https://cdn.shopify.com/s/files/1/0432/4609/2443/files/29548236079.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/kubogofire.pdf
    • https://cdn.shopify.com/s/files/1/0431/7125/0333/files/wiwemaxomijanapubi.pdf
    • https://cdn.shopify.com/s/files/1/0432/8466/0380/files/nurugidiwudug.pdf
    • https://cdn.shopify.com/s/files/1/0429/5373/6351/files/sisibineriraxas.pdf
    • https://cdn.shopify.com/s/files/1/0433/4741/1096/files/23600761090.pdf
    • https://cdn.shopify.com/s/files/1/0431/9723/5363/files/85524656327.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_off0000879b.bin
e8d2cbdd770dbfeca6ede4612ad7994d7ad71a462060c6dfd1c4b20c47dbba39		 pdf-font-stream PDF embedded font (sfnt) at offset 0x879B 4820 bytes
font_01_sfnt_off0000981e.bin
9a654baa60fd5665f23eb5e073e0a903882d929b5da8848aa4e6d23b188bff7d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x981E 10156 bytes

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