Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8ce1ae6b71084c4…

MALICIOUS

PDF

42.9 KB Created: 2020-11-04 20:55:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: e8d4c340cbad7115d2b6eaa74a07ac5e SHA-1: 1002777e023747d16cce4c72a37f13dd71fcceb2 SHA-256: e8ce1ae6b71084c49bdafa8426e53dba1dfddedaf6662b66d12dfcfbaaf66f5d
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

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.ru/123?keyword=manuscript+definition+art In PDF document text
    • https://cdn-cms.f-static.net/uploads/4389830/normal_5f9ee66c08c30.pdfIn PDF document text
    • https://xaruxetadelu.weebly.com/uploads/1/3/4/4/134478950/1615513.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386086/normal_5f94ca6348101.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366311/normal_5f93ad7318572.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366659/normal_5f8fe39648b41.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366646/normal_5f9fd75345b89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382976/normal_5f9991f47e519.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366400/normal_5f8a547b8648a.pdfIn PDF document text
    • https://wugovokida.weebly.com/uploads/1/3/4/3/134319073/10a71.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fapaga/53946477111.pdfIn PDF document text
    • https://s3.amazonaws.com/jafujasiwetid/4531081357.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_off00006ad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AD0 5120 bytes
SHA-256: a0f5620de23dc5c6e3bf01779b7ef0b929bca7cd0bc0f98b49a99a474a98195e
font_01_sfnt_off00007c59.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C59 10276 bytes
SHA-256: 77a7dbd19f5a26948bab1bfe60a995d04bf311668f2ced663cb53b4bdb202c70

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