Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3f68a5eb91ab1f5…

MALICIOUS

PDF

41.9 KB Created: 2020-08-06 20:00:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 672681c3d45d27c7b45e61453fbb4149 SHA-1: dee333655387ef7e80d5faabc21262fc9feefb2f SHA-256: c3f68a5eb91ab1f54ba4b7c4ebf78eab90790cfe15eace60e41a89f239fd2997
120 Risk Score

Malware Insights

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

The PDF contains a link farm with numerous embedded URLs, many of which point to Shopify domains. One critical heuristic firing indicates a direct link to a known malicious redirector at 'https://ttraff.cc/wb?keyword=darker%20dungeons%205e%20pdf'. This suggests the document is designed to redirect users to malicious sites, likely for phishing or malware distribution. No scripts were extracted, and the document body was heavily obfuscated, limiting further analysis of the payload.

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/wb?keyword=darker%20dungeons%205e%20pdf
    • http://files.tommysguitars.com/uploads/1/3/2/6/132695213/8cc78c.pdf
    • http://files.kimberleychiropractic.com/uploads/1/3/0/8/130874276/sitatafarixev.pdf
    • http://files.cakeballsforacause.com/uploads/1/3/1/6/131606630/e8605c.pdf
    • http://vixebub.adventurehorizons.com/uploads/1/3/2/3/132303410/2207347.pdf
    • https://cdn.shopify.com/s/files/1/0427/9461/4940/files/33628213819.pdf
    • https://cdn.shopify.com/s/files/1/0429/3702/4668/files/totoze.pdf
    • https://cdn.shopify.com/s/files/1/0429/5196/6873/files/12_tratados_comerciales_de_mexico.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/78539107281.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/rofan.pdf
    • https://cdn.shopify.com/s/files/1/0429/8699/5863/files/18237813985.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/47948794002.pdf
    • https://cdn.shopify.com/s/files/1/0436/9979/8166/files/kowupubuz.pdf
    • https://cdn.shopify.com/s/files/1/0437/2794/5879/files/wubukigatekejono.pdf
    • https://cdn.shopify.com/s/files/1/0433/9911/9013/files/vomegovanepomitomarufi.pdf
    • https://cdn.shopify.com/s/files/1/0430/5531/7149/files/18565862427.pdf
    • https://cdn.shopify.com/s/files/1/0429/4891/9450/files/win_10_hosts_file.pdf
    • https://cdn.shopify.com/s/files/1/0432/6857/1294/files/76787502427.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_off00005e44.bin
07c1daf9e884435df1d97d1a92cd7c1a190406bd06af43c2c6f720dc7ab519a6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E44 5364 bytes
font_01_sfnt_off000070a1.bin
63ce15c4b4821b58d91c7e978f631fe40f9741ceadfee81da80173e5a467dcfa		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70A1 13504 bytes

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