Malicious PDF — malware analysis report

Static analysis result for SHA-256 c341fa2f837281fe…

MALICIOUS

PDF

43.8 KB Created: 2020-07-08 23:01:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a7db3d6dbbed3f39491ab9cf60e65cae SHA-1: a0a83f04906496243e5aa546ceb33c14d05cd706 SHA-256: c341fa2f837281fe005d2afee2bfcefd2cf80d25cc23cc034f58dd159437dc9d
140 Risk Score

Malware Insights

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

This PDF document is designed to lure users to malicious websites through a large number of embedded links, disguised with SEO-friendly keywords. The primary redirector URL is https://ttraff.ru/wb?keyword=cleveland%20clinic%20campus%20map%20pdf. Additionally, the document contains a callback lure, suggesting a potential for social engineering tactics to extract further information or credentials. The PDF structure and link farm indicate a campaign focused on SEO poisoning and redirecting users to potentially malicious or phishing content.

Heuristics 4

  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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.ru/wb?keyword=cleveland%20clinic%20campus%20map%20pdf
    • http://files.tsceramics.com/uploads/1/3/0/8/130874213/73b387159ae9170.pdf
    • http://files.fbclocustgrovepreschool.com/uploads/1/3/0/9/130969503/lojub.pdf
    • http://files.bossmanart.com/uploads/1/3/1/0/131070521/7bd11.pdf
    • http://files.monfortestatesdacula.com/uploads/1/3/2/6/132681002/226bb98.pdf
    • http://files.thatsanicecookiecutter.com/uploads/1/3/1/4/131406739/fff1962.pdf
    • http://files.meridianbodycare.com/uploads/1/3/1/8/131857193/6976761.pdf
    • http://files.sallysweetland.com/uploads/1/3/1/4/131438249/e377953a8cde1ef.pdf
    • http://files.srrlsf.com/uploads/1/3/1/3/131380868/4f04903295aa5.pdf
    • http://files.islamiccenterdm.com/uploads/1/3/1/8/131856052/2030475.pdf
    • https://susuloteteze.files.wordpress.com/2020/07/kibulatuzutuxiza.pdf
    • https://jovemubam.files.wordpress.com/2020/06/vevajetifivisajexekek.pdf
    • https://piwutozegik.files.wordpress.com/2020/06/lufozinagilutemivu.pdf
    • https://xajiwazep851788274.files.wordpress.com/2020/06/navinef.pdf
    • https://fumusamo.files.wordpress.com/2020/07/64817275282.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/91300886864.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/99231100330.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/32150460784.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/87463685859.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/zijuk.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/pegumi.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_off00006dd4.bin
ce914ad0f5c03336db2dd56bb7dd3a35d2f7d4a11ac8b8d594f57524d268bd7b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD4 4980 bytes
font_01_sfnt_off00007eb6.bin
1bb4f10e9a20a556b0af86967f7e5029151ec887b07a826e917344f90e7aaf07		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7EB6 10336 bytes

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