Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b1f6a9302f8605c…

MALICIOUS

PDF

40.4 KB Created: 2020-08-08 18:46:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 85de55f55c6c21952667ba1d13632f3a SHA-1: de56843652b4573d997de25d2831069c2c695dfc SHA-256: 9b1f6a9302f8605c4c890c2442f048c72608a2fd350cd8a81133a7dc8bff7ef2
120 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many of which point to external resources, indicating a link farm or redirection strategy. One critical heuristic identified a link to known malicious redirector infrastructure at 'https://ttraff.com/wb?keyword=the%20landlady%20book%20pdf'. The document body and embedded link structure suggest a lure to download content, likely leading to a phishing or malware download 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/wb?keyword=the%20landlady%20book%20pdf
    • http://jifeji.bethelfriends.net/uploads/1/3/0/7/130739553/cf1be6b13b.pdf
    • http://files.energymywayessex.co.uk/uploads/1/3/1/4/131437756/muxap_xoguvij_lirorike.pdf
    • http://files.danielshrigley.com/uploads/1/3/1/6/131606489/sisajulinibi_vapob_pugatuxi.pdf
    • http://files.nwbookkeepingservices.com/uploads/1/3/1/3/131383398/wokoj.pdf
    • http://files.hammerhorses.com/uploads/1/3/1/4/131453555/5694480.pdf
    • https://cdn.shopify.com/s/files/1/0431/4916/4693/files/zenikotomabo.pdf
    • https://cdn.shopify.com/s/files/1/0434/6665/3858/files/business_writing_skills_training.pdf
    • https://cdn.shopify.com/s/files/1/0434/7641/8722/files/jagisakojifadazekosusekan.pdf
    • https://cdn.shopify.com/s/files/1/0439/4713/1035/files/convert_to_jpg_online_free_small_size.pdf
    • https://cdn.shopify.com/s/files/1/0431/2884/8538/files/java_string_format_double.pdf
    • https://cdn.shopify.com/s/files/1/0430/5115/5618/files/54557105984.pdf
    • https://cdn.shopify.com/s/files/1/0430/3273/9989/files/83738732803.pdf
    • https://cdn.shopify.com/s/files/1/0431/8475/0743/files/bebevon.pdf
    • https://cdn.shopify.com/s/files/1/0434/4155/3575/files/xabelozesumufetonoge.pdf
    • https://cdn.shopify.com/s/files/1/0433/9128/7450/files/fafamufidatogupe.pdf
    • https://cdn.shopify.com/s/files/1/0432/1912/4382/files/32943836987.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_off00005fbf.bin
4b2bc31b26cac6f9109b6f92414d31ee6d0e6c48d0a8a9bace0d06c5a0228104		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5FBF 5108 bytes
font_01_sfnt_off00007128.bin
8badad1576850856e2b887a4353bc008133fe30753db7387088c2a878a6381eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7128 10592 bytes

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