Malicious PDF — malware analysis report

Static analysis result for SHA-256 baefb49c92c69baf…

MALICIOUS

PDF

43.1 KB Created: 2020-08-30 00:50:49 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8c39051be8ddb4d862e9dd1b95e828f5 SHA-1: bf5637804278952662bc4afd11c180df52c67115 SHA-256: baefb49c92c69bafec5042becfa30d007e0af930426025b4dfa7e7d24acfa16d
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.001 Malicious Link

The PDF contains a link farm designed to mimic legitimate documents, with the primary link directing to a known malicious redirector. The document body, though heavily obfuscated, contains the malicious URL. This suggests the PDF is used as a lure to redirect users to malicious infrastructure, likely for phishing or malware delivery.

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/wix?keyword=manual+de+dise%25C3%25B1o+por+viento+cfe
    • https://cdn.shopify.com/s/files/1/0433/4456/0281/files/nedezexigijiluwalasub.pdf
    • https://cdn.shopify.com/s/files/1/0431/8212/9320/files/darling_darling_baby.pdf
    • https://cdn.shopify.com/s/files/1/0440/2806/8005/files/microsoft_publisher_halloween_flyer_templates.pdf
    • https://cdn.shopify.com/s/files/1/0435/2894/5815/files/7333695744.pdf
    • https://cdn.shopify.com/s/files/1/0433/7238/0310/files/70597180027.pdf
    • https://static.usrfiles.com/ugd/01e791_ceca2d7bed004f259a6e324428ec0b84.pdf
    • https://static.usrfiles.com/ugd/b8c837_3a871a19035e402792eecb6281a2bcbe.pdf
    • https://static.usrfiles.com/ugd/b8c837_b5d72d8fb86b42059382dd488905e9a3.pdf
    • https://static.usrfiles.com/ugd/5ecadc_25c044f5842546e7a05353cbecd84aaa.pdf
    • https://cdn.shopify.com/s/files/1/0429/9577/7699/files/41527155679.pdf
    • https://cdn.shopify.com/s/files/1/0441/1280/6040/files/aptis_advanced_test_sample.pdf
    • https://cdn.shopify.com/s/files/1/0432/3095/3630/files/95411197552.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_off00006572.bin
02052a3b297efd1139be2b46e182dd5c4637b9eb4b9dfea984d12812d6efcc4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6572 5428 bytes
font_01_sfnt_off000077bc.bin
de35a4492ba03a4056e1b56dca763f0dfc03aeec5782a3985327300139ff5fc9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x77BC 11952 bytes

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