Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ce16f6f2e2b73bc…

MALICIOUS

PDF

39.7 KB Created: 2020-08-15 16:44:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a0f6f5673b272e107718124205b005e9 SHA-1: b44426c233d3fbb259a4a5faaf318f5303d33d98 SHA-256: 9ce16f6f2e2b73bc262eed9073ab192cde09e41587d25979e9446bbabdc83e4b
150 Risk Score

Malware Insights

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

The PDF contains a link farm and a specific malicious redirector URL, indicating a lure to download a fake application. The primary malicious URL is https://ttraff.cc/pify?keyword=spotify+premium+apk+free, which is designed to redirect users to potentially harmful content. The presence of numerous links, many pointing to Shopify domains, suggests an attempt to obscure the malicious intent and leverage seemingly legitimate platforms.

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/pify?keyword=spotify+premium+apk+free
    • http://files.artismylife.us/uploads/1/3/1/4/131409309/1957914.pdf
    • http://gobowe.iowafallslib.com/uploads/1/3/1/3/131378776/6492380.pdf
    • https://cdn.shopify.com/s/files/1/0430/8559/4775/files/23976610279.pdf
    • https://cdn.shopify.com/s/files/1/0440/6899/5237/files/datolesulaxeku.pdf
    • https://cdn.shopify.com/s/files/1/0440/1420/7134/files/antiarritmicos_clasificacion.pdf
    • https://cdn.shopify.com/s/files/1/0430/0265/8979/files/fogewivole.pdf
    • https://cdn.shopify.com/s/files/1/0431/8140/8420/files/wegogi.pdf
    • https://cdn.shopify.com/s/files/1/0432/3311/6315/files/dafad.pdf
    • https://cdn.shopify.com/s/files/1/0434/8759/2608/files/46851417144.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_off00005e31.bin
4a2ed88a9e696a291f800ea115ab9977cd116735e63bad91acb786c22a72513b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E31 5104 bytes
font_01_sfnt_off00006f83.bin
b205864f84ff95afc9ccd6e2698ff10ad16096d91321670afefecb9682d904c3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F83 10272 bytes

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