Malicious PDF — malware analysis report

Static analysis result for SHA-256 969a3faa1ff7ee8e…

MALICIOUS

PDF

42.6 KB Created: 2020-08-14 17:45:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b7f104e234e670589ff08015456f4e38 SHA-1: abc9bfa0095a9b3e21fcb4e7782a62aed78e976a SHA-256: 969a3faa1ff7ee8ef46c0da0bcd698bccfd6626e8d109efe36cf6e6eddf87185
150 Risk Score

Malware Insights

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

This PDF document contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=apa+guidelines+for+footnotes'. The document body, though partially corrupted, also contains this URL, suggesting an attempt to lure users to malicious sites under the guise of academic or informational content. The ML classifier strongly supports the malicious verdict.

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=apa+guidelines+for+footnotes
    • http://files.gtc-elite.org/uploads/1/3/2/6/132682570/netefikuvuboz_fifajog_jubakafa.pdf
    • http://files.yourspiritwithin.net/uploads/1/3/1/4/131453527/novowegoma-jedubojil-mugijoza.pdf
    • https://cdn.shopify.com/s/files/1/0429/7372/4825/files/black_swan_netflix.pdf
    • https://cdn.shopify.com/s/files/1/0429/3676/2527/files/pip_force_reinstall.pdf
    • https://cdn.shopify.com/s/files/1/0439/1760/7067/files/digital_computer_electronics_albert_paul_malvino.pdf
    • https://cdn.shopify.com/s/files/1/0432/9095/1848/files/vovugotasi.pdf
    • https://cdn.shopify.com/s/files/1/0428/6801/5260/files/carnival_dream_deck_plans.pdf
    • https://cdn.shopify.com/s/files/1/0434/2949/4936/files/download_buku_akuntansi_manajemen_rudianto.pdf
    • https://cdn.shopify.com/s/files/1/0430/2949/5959/files/82655583316.pdf
    • https://cdn.shopify.com/s/files/1/0430/5023/8101/files/jpg_to_converter_online_ilove.pdf
    • https://cdn.shopify.com/s/files/1/0428/0582/1599/files/39789244357.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_off00006931.bin
f82bd34ddbb70ce099a6f21e510bef28e83171388384e4d8f575d536897c0ff6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6931 5200 bytes
font_01_sfnt_off00007ae9.bin
c57bfba2d03b7138592c41bedfcb2a9c82239eaa49db11868d2c64714a7a3e9d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7AE9 10120 bytes

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