Malicious PDF — malware analysis report

Static analysis result for SHA-256 eebe5f63fcb17ff7…

MALICIOUS

PDF

34.5 KB Created: 2020-08-13 05:10:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 012b61c72e1af0e523b0dec9df2df530 SHA-1: 30ba168a36c2e5dd3ef4a26471eebabd9bedccf3 SHA-256: eebe5f63fcb17ff786d81d6cfab61bed94b0f0a435e7fbb1a7c0173d9a726d53
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to Shopify domains, but one critical link redirects to a known malicious domain (ttraff.com). This suggests a link farm or SEO poisoning tactic designed to lure users into downloading malicious content disguised as legitimate documents. The ML classifier also strongly flagged this PDF as malicious. No scripts were extracted, but the primary attack vector appears to be the malicious redirector.

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=bailey+ollis+biochemical+engineering+fundamentals+pdf
    • http://files.chasemichaelmusic.com/uploads/1/3/1/4/131406843/7a385771ba.pdf
    • http://xosejexeb.fandrlive.com/uploads/1/3/1/0/131070786/pawava_runitedasewagof.pdf
    • http://pusixike.sacramentoeslprogram.org/uploads/1/3/0/7/130776542/zariwixegilik.pdf
    • http://files.sandaharrboerboels.com/uploads/1/3/1/3/131379118/20d288ed4.pdf
    • http://wajod.morganmanella.com/uploads/1/3/0/8/130814058/be51993ccd7.pdf
    • https://cdn.shopify.com/s/files/1/0430/5325/2757/files/buvizokiju.pdf
    • https://cdn.shopify.com/s/files/1/0430/2857/8467/files/12196889383.pdf
    • https://cdn.shopify.com/s/files/1/0436/5074/4478/files/stored_procedure_in_sql_free_download.pdf
    • https://cdn.shopify.com/s/files/1/0428/0621/4819/files/36275129450.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/31178329868.pdf
    • https://cdn.shopify.com/s/files/1/0431/5607/8758/files/neoantigens_in_cancer_immunotherapy.pdf
    • https://cdn.shopify.com/s/files/1/0434/2241/7046/files/seismic_stratigraphy_course.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/6565103434.pdf
    • https://cdn.shopify.com/s/files/1/0427/4959/1718/files/33254194973.pdf
    • https://cdn.shopify.com/s/files/1/0431/8747/0499/files/sulimanot.pdf
    • https://cdn.shopify.com/s/files/1/0431/0256/8599/files/blacksmith_workshop.pdf
    • https://cdn.shopify.com/s/files/1/0431/5506/2948/files/80953665279.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_off00004574.bin
11f6fedc7a4ff4d576beaf260d6e304182e2b436045df99b6b7399e833dc4983
pdf-font-stream PDF embedded font (sfnt) at offset 0x4574 5860 bytes
font_01_sfnt_off0000593a.bin
2226c5bf56dae2918bf878ba3510692af07bc894e3d1b517e7394e9f5d2bf240
pdf-font-stream PDF embedded font (sfnt) at offset 0x593A 9908 bytes