Malicious PDF — malware analysis report

Static analysis result for SHA-256 c98f03781894f1c7…

MALICIOUS

PDF

38.1 KB Created: 2020-08-28 22:14:22 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0577f118107507785c4614fb6d38bc3a SHA-1: b811a642b7ef54043a24829ff72b060d608cb32e SHA-256: c98f03781894f1c7b6cd7ec4061975ceb539376aad61df37f643e382571fdc91
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to a redirector service known to host malicious content. The primary malicious URL identified is 'https://ttraff.cc/wix?keyword=bollywood+full+movies+pk'. This suggests a phishing or scam attempt designed to redirect users to harmful sites. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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=bollywood+full+movies+pk
    • https://cdn.shopify.com/s/files/1/0434/4676/3677/files/cisa_certified_information_systems_auditor_study_guide_sybex_2020.pdf
    • https://cdn.shopify.com/s/files/1/0429/2952/0796/files/tv_azteca_news_reporter.pdf
    • https://cdn.shopify.com/s/files/1/0434/3355/8168/files/jirexijemuvigaziwin.pdf
    • https://cdn.shopify.com/s/files/1/0435/7524/7003/files/nginx_lua_redis.pdf
    • https://cdn.shopify.com/s/files/1/0453/4242/5243/files/marguerite_duras.pdf
    • https://cdn.shopify.com/s/files/1/0437/9957/6733/files/47659204349.pdf
    • https://cdn.shopify.com/s/files/1/0435/4883/6004/files/bootstrap_4_tooltip.pdf
    • https://static.usrfiles.com/ugd/b8c837_3d5ca008f8a04a2ea19d4dfe9f585da4.pdf
    • https://static.usrfiles.com/ugd/b8c837_d8405a7a87514521a8b6e3a1fa891439.pdf
    • https://cdn.shopify.com/s/files/1/0431/4864/0418/files/wurevikugogosuzoduku.pdf
    • https://cdn.shopify.com/s/files/1/0432/9563/7659/files/66454249325.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_off000055d6.bin
2a8d8dc56b5b76af11856ed80a0bac49558b816658bcd07d818d4ecdf69ff436		 pdf-font-stream PDF embedded font (sfnt) at offset 0x55D6 5248 bytes
font_01_sfnt_off000067ca.bin
c0b4ad9711a506590ed0b516b6f7a7041e176ab1aadb38404a76abd4a83998bf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x67CA 10664 bytes

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