Malicious PDF — malware analysis report

Static analysis result for SHA-256 7e627dccaf8afcb1…

MALICIOUS

PDF

40.4 KB Created: 2020-10-05 02:41:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 222f89f713c24c0d39ceaf57cede2036 SHA-1: 88f9f472cc93416968d63f465952e3405269c94d SHA-256: 7e627dccaf8afcb1490dac3f31735512f47e95c91b53654b6fce5569177f41ae
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://gettraff.ru/strik?keyword=manual+de+dise%25C3%25B1o+urbano In PDF document text
    • https://site-1039261.mozfiles.com/files/1039261/54462843942.pdfIn PDF document text
    • https://site-1044072.mozfiles.com/files/1044072/sixaxe.pdfIn PDF document text
    • https://site-1037096.mozfiles.com/files/1037096/20182570046.pdfIn PDF document text
    • https://site-1037055.mozfiles.com/files/1037055/7090299146.pdfIn PDF document text
    • https://site-1036830.mozfiles.com/files/1036830/78403129934.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/8b68137f-52cf-45f9-8d95-bc4277db91a0/lobovudoje.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/133040f5-c186-40bb-9d45-89990a943688/40151034870.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0af5bdf4-6f8f-4600-974a-14ba25605048/wunox.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b34c489-2fc3-4fd4-a27f-1fab5cd68c06/xabawobi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9232f702-246d-4c9c-9090-1e0333b5aef3/28792960656.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/48530822-1501-4f0e-a0aa-96332aa06a10/vifugumalazirob.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2127071-3d48-4b92-a5ce-5619753e8e34/vekozilip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/aad879c6-6c95-4419-9f1e-141a9903c40e/57317003733.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_off00005ef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EF8 5176 bytes
SHA-256: 9f4f6bff6fd808a112455bb85fe1508f40218f70a310214448da6a518e84d4af
font_01_sfnt_off00007063.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7063 10812 bytes
SHA-256: 50ca047ce750f1f4c707adde04849de8e46b0e7ca19d0a9e86dab689105d55cb

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