Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8e84665037e9346…

MALICIOUS

PDF

145.3 KB Created: 2020-08-02 09:22:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 3c0d2adc03b1e13001740060d3ac5d57 SHA-1: 5ad4bacdc609230b0c107f627b6d9bfbfd43935e SHA-256: a8e84665037e9346f4b2a1b2b5b15e4cd7ac5795f853db3a6b61e4ec688521e4
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to Shopify domains hosting other PDFs, suggesting a link farm or SEO poisoning tactic. One critical heuristic identified a link to a known malicious redirector at 'ttraff.com'. The document body, though heavily obfuscated, contains the URL 'https://ttraff.com/pify?keyword=meyer+snowplow+troubleshooting', indicating the primary lure is to this malicious site.

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=meyer+snowplow+troubleshooting
    • http://files.myphotographybyjess.com/uploads/1/3/1/8/131857315/favofelifepod.pdf
    • http://files.religiousdoodles.com/uploads/1/3/1/3/131379578/9d7517d15303.pdf
    • http://files.sentinel-air.com/uploads/1/3/1/8/131872198/6048197.pdf
    • http://files.reliablevendingcleveland.com/uploads/1/3/0/7/130739746/9539669.pdf
    • https://cdn.shopify.com/s/files/1/0431/3153/5524/files/lipotufubarotopuz.pdf
    • https://cdn.shopify.com/s/files/1/0443/9523/3446/files/plural_of_quiz.pdf
    • https://cdn.shopify.com/s/files/1/0436/3390/1726/files/69515435868.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/sasexenumufuxa.pdf
    • https://cdn.shopify.com/s/files/1/0436/9920/8346/files/65871279579.pdf
    • https://cdn.shopify.com/s/files/1/0434/4568/2328/files/kiropip.pdf
    • https://cdn.shopify.com/s/files/1/0435/2117/9816/files/2205710997.pdf
    • https://cdn.shopify.com/s/files/1/0429/6926/8373/files/90012267342.pdf
    • https://cdn.shopify.com/s/files/1/0439/9346/4990/files/56759993761.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/pexigubozorabavajodumixi.pdf
    • https://cdn.shopify.com/s/files/1/0432/4704/2728/files/pandas_replace_nan.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_off00020151.bin
3bbe5c7a2d9d19a029d8dca98b640efa087e19b643f66380f741f6e367eb1ae5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x20151 5208 bytes
font_01_sfnt_off0002132a.bin
a3035b4e1af5f9707e966339b73ea17df0895b55cd3f6502686af591ce2725c0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2132A 10628 bytes

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