Malicious PDF — malware analysis report

Static analysis result for SHA-256 e46aac1901fab6ed…

MALICIOUS

PDF

40.9 KB Created: 2020-11-03 09:01:54 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 0e96095324943034476c2d33f5d21466 SHA-1: decdae964d4a06f0634d62765cc444426eb947e6 SHA-256: e46aac1901fab6ed596247aed49f3db4775787e52d43d3f732032afa9aa3ffe1
94 Risk Score

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.me/123?keyword=free+printable+blank+unit+circle In PDF document text
    • https://cdn-cms.f-static.net/uploads/4384640/normal_5f986b062cac7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366020/normal_5f9189f9a8d95.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369783/normal_5f899bdd68139.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413714/normal_5f9ae9b3ec3ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375075/normal_5f8e721b20ac1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374545/normal_5f8abda57ba99.pdfIn PDF document text
    • https://derewoju.weebly.com/uploads/1/3/4/3/134319287/e6b0a330.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/fa860103-3882-4d82-8c3f-610ff1deb7d5/molafisodiwokemenim.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86f4b6c4-030b-459b-b646-20161cf9f198/rotiwemizokiti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b69e38f8-88bf-4bba-8a1e-46d6d094759f/toshiba_refurbished_laptops_usa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/25fd6b59-8119-4f74-bb67-adc771d883b9/wesiwemibozojal.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/fadafezidesebelewofu.pdfIn PDF document text
    • https://s3.amazonaws.com/rebomedug/dozirivokow.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_off000061a1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A1 4908 bytes
SHA-256: ea84859cd9f1f0458f9309d438bc47cac17f8be037b25d4e7292246c02cce3f2
font_01_sfnt_off00007262.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7262 10768 bytes
SHA-256: cedadb4d259ea13b1910cea1fb77a980e6905148f3ee645453b494ecc841134c