Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac49e44f370c30ee…

MALICIOUS

PDF

62.2 KB Created: 2020-10-27 17:52:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 90c1a7068e83f0560c82d5a177bf4a31 SHA-1: 7bc75c701e8b54c701d8b0dedcf33c7a5db212c0 SHA-256: ac49e44f370c30ee116090885cbf6334e2e431abe57abcfd1ce8b5505afa51f0
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a link to a known malicious redirector, identified by the heuristic PDF_MALICIOUS_REDIRECTOR_LINK. The embedded URL, https://ttraff.com/123?keyword=trey+songz+age+2019, is the primary indicator of malicious intent. The document body, though heavily obfuscated, contains text that appears to be a lure related to celebrity information, aiming to trick users into clicking the malicious link.

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.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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/123?keyword=trey+songz+age+2019 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4408990/normal_5f96545a823d9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378857/normal_5f92fe7fa4833.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373240/normal_5f96bccf81887.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365657/normal_5f87cec4618ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386092/normal_5f93b20819c98.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369794/normal_5f8d72c9739b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422637/normal_5f977c66dcbb7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418557/normal_5f972452df4f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366369/normal_5f8d6f220f781.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372086/normal_5f969c359cedd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405945/normal_5f92aaf0eeed0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369306/normal_5f941ee1a1835.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/757e0cd6-f6e4-492d-a083-331d74d48932/33373752237.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5eab3157-1874-421c-b652-c4710328204d/79229121986.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/49a12dd4-093b-4533-a2ed-c5bae8030f46/genuxefazetiteb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f669ea8f-e6f2-48e2-87f9-4edb1c5d7a0a/36208247604.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f889980-e414-4601-83e1-650f2a15a992/sisavogiluxapezogu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ecf0c0f4-4e2f-4102-aff4-6f27530b1448/introduction_to_modern_nonparametric_statistics.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cf2c6a1c-921b-40f0-9329-22ed226c19f4/kufida.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b275.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB275 5404 bytes
SHA-256: 69b25dcf600a171401494a2be4cf52ccfaac1e6973701d7dd2d6c79b744499ce
font_01_sfnt_off0000c4fc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC4FC 11368 bytes
SHA-256: 61e6ef554ebbbfa3fa8392d0d95de19e18e99c2935fa2c7eb271055bb51709bf

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