Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf1d63dd59c84b27…

MALICIOUS

PDF

43.0 KB Created: 2020-08-30 23:26:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 709266af22c46a91c0817c134faa1c9d SHA-1: 990ec3503adb3f49246e09aaaf51535531d0a28e SHA-256: cf1d63dd59c84b27f851c836bf293907fa5454ff3a89fac498db397f5bebd0ac
120 Risk Score

Malware Insights

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

The PDF document contains a link to a known malicious redirector, ttraff.cc, disguised as educational content about biology. This suggests an attempt to lure users to malicious infrastructure, likely for SEO poisoning or phishing. The document also contains a large number of external links, many hosted on Shopify, which is characteristic of SEO link farms. No scripts were extracted from this sample.

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.cc/wix?keyword=9.+s%25C4%25B1n%25C4%25B1f+biyoloji+konu+anlat%25C4%25B1m%25C4%25B1
    • https://cdn.shopify.com/s/files/1/0435/6662/9032/files/wudiwefoxifuf.pdf
    • https://cdn.shopify.com/s/files/1/0435/6187/7665/files/19978353028.pdf
    • https://cdn.shopify.com/s/files/1/0428/8957/6601/files/fowuw.pdf
    • https://cdn.shopify.com/s/files/1/0432/1706/0007/files/andante_ferdinando_carulli.pdf
    • https://cdn.shopify.com/s/files/1/0430/6652/3809/files/baberudunipetowuvu.pdf
    • https://cdn.shopify.com/s/files/1/0432/0473/9232/files/nutepifiw.pdf
    • https://cdn.shopify.com/s/files/1/0429/0668/1497/files/gumatisojikojasibepogusal.pdf
    • https://cdn.shopify.com/s/files/1/0437/6428/5598/files/63127668303.pdf
    • https://static.usrfiles.com/ugd/9e53d4_0d2a0ded51584d85a2562756f1d0dbdc.pdf
    • https://static.usrfiles.com/ugd/b8c837_ab7a096ce89f4b098577212538215d70.pdf
    • https://cdn.shopify.com/s/files/1/0433/9479/3635/files/joyce_meyer_bible_study.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/39858795743.pdf
    • https://cdn.shopify.com/s/files/1/0431/2737/3981/files/city_skylines_train_guide.pdf
    • https://cdn.shopify.com/s/files/1/0445/4989/8399/files/tiruris.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_off00005921.bin
2052158af46691266cee5059b4aea29ea06768301c68eee74ed0a36e98914e99		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5921 5088 bytes
font_01_sfnt_off00006a5a.bin
c285aa562b23470e07553ec8f1ec0388232251cfec46df256c987be2a7f812a8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6A5A 11828 bytes
font_02_sfnt_off00008f3d.bin
cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8F3D 4324 bytes

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