Malicious PDF — malware analysis report

Static analysis result for SHA-256 5650182e029cfe70…

MALICIOUS

PDF

35.7 KB Created: 2020-08-08 03:19:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 7d1cd8ed14e20844afb9b6ea977b6c89 SHA-1: 354a20f049dfcc5f2c23784ed9441ae694093593 SHA-256: 5650182e029cfe7070bc92f9fe43fcfcf66d4bb52af0a0722965cda44b1b79b5
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 User Execution: Malicious Link T1059.001 PowerShell

The PDF file contains numerous embedded links, with a critical heuristic firing for a malicious redirector. The document body, though heavily obfuscated, contains text related to 'certificado medico pdf imss' and the malicious URL, suggesting a lure to trick users into clicking. The primary malicious URL, 'https://ttraff.com/pify?keyword=certificado+medico+pdf+imss', is identified as a redirector, likely leading to further malicious content. No scripts were extracted, limiting the analysis of direct execution behavior.

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=certificado+medico+pdf+imss
    • http://tusagumem.vesselsofmercy.net/uploads/1/3/0/8/130813528/bidijusebobe-wezobi-sezupefej-lefamaginaramu.pdf
    • http://files.goffausa.com/uploads/1/3/1/4/131482939/lamurilaw.pdf
    • http://files.thetrue.org/uploads/1/3/0/8/130813577/majomog.pdf
    • https://cdn.shopify.com/s/files/1/0428/1643/8438/files/jewuzulogikiwe.pdf
    • https://cdn.shopify.com/s/files/1/0431/6980/8548/files/the_last_star_5th_wave.pdf
    • https://cdn.shopify.com/s/files/1/0433/8909/1989/files/26079865776.pdf
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/riginijulu.pdf
    • https://cdn.shopify.com/s/files/1/0433/8820/7254/files/akademia_pana_kleksa_cala_ksika_chomikuj.pdf
    • https://cdn.shopify.com/s/files/1/0433/1339/7924/files/syslog_server_mac.pdf
    • https://cdn.shopify.com/s/files/1/0431/2537/5130/files/ponotatejoni.pdf
    • https://cdn.shopify.com/s/files/1/0433/8080/1701/files/48980342746.pdf
    • https://cdn.shopify.com/s/files/1/0432/7315/8821/files/against_method_peter_feyerabend.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/29876283886.pdf
    • https://cdn.shopify.com/s/files/1/0435/3340/2266/files/vaked.pdf
    • https://cdn.shopify.com/s/files/1/0435/5099/8679/files/mathematics_for_economics_student_solutions_manual.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_off00004e05.bin
ce87b82424f752e28eca0947e8741dbbc533305e2bcb16db29d27bade9842d76		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E05 5172 bytes
font_01_sfnt_off00005f83.bin
670453263a33feb4221f55815095e51a824177296e4f1d2e59bf9200054e8cb5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F83 10636 bytes

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