Malicious PDF — malware analysis report

Static analysis result for SHA-256 cf0a27e47d7572d8…

MALICIOUS

PDF

75.2 KB Created: 2020-08-24 00:21:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: bb5bebecf395d6fdbcd3fbc2ae195d07 SHA-1: 79a32b10770106efea5f864cb0fd57954a569156 SHA-256: cf0a27e47d7572d86d18327eae5483c74f28fa42b7c28cfebd0127a2a7324d5e
150 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ttraff.com', which is used in a lure related to UK visa financial requirements. This indicates a phishing attempt designed to redirect users to a malicious site. The PDF also contains a link farm heuristic, suggesting it's part of a larger SEO poisoning campaign to distribute malicious content.

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.com/pify?keyword=uk+visa+appendix+2+financial+requirement+form
    • http://lozom.findahappybalance.com/uploads/1/3/2/7/132740978/030aad73e6.pdf
    • http://files.futyfoundation.org/uploads/1/3/1/4/131406537/14e5d78e98ace85.pdf
    • http://temaranop.chemindemoda.ca/uploads/1/3/1/4/131482975/5c870.pdf
    • http://files.epsaofficial.eu/uploads/1/3/1/3/131380107/8968213.pdf
    • http://files.thecalmscribe.ca/uploads/1/3/2/7/132740805/2267fc7134.pdf
    • https://cdn.shopify.com/s/files/1/0434/5911/7206/files/jinawoz.pdf
    • https://cdn.shopify.com/s/files/1/0440/4133/9030/files/country_code_86.pdf
    • https://cdn.shopify.com/s/files/1/0428/1863/3894/files/xifexadusasanedizovo.pdf
    • https://cdn.shopify.com/s/files/1/0437/9095/8749/files/chrome_for_windows.pdf
    • https://cdn.shopify.com/s/files/1/0430/5921/6533/files/11582685650.pdf
    • https://cdn.shopify.com/s/files/1/0437/6448/2202/files/vewenovavalisivupezos.pdf
    • https://cdn.shopify.com/s/files/1/0428/2223/8374/files/hanna_arendt_la_condicion_humana.pdf
    • https://cdn.shopify.com/s/files/1/0430/0151/2095/files/pdf_to_editable_word_document_online_free.pdf
    • https://cdn.shopify.com/s/files/1/0435/4765/6351/files/2019_calendar_template_with_nsw_school_holidays.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_off0000e8d8.bin
d5c352aca6b2e1e58f6c4cd8f14949df77a1b33afdd0964cb58a612b02b0504e		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE8D8 5744 bytes
font_01_sfnt_off0000fc50.bin
e779b512a592078a3848822242757df5e051240b22a102b4207de28b8c3a099b		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC50 10356 bytes

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