Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1d2113ae0eef4f4…

MALICIOUS

PDF

41.9 KB Created: 2020-11-05 02:45:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 94fe52c1dff511a4d24a90b6d11e15b6 SHA-1: d548376d35b70d9f3d2682f4a3c896dc50a01c90 SHA-256: e1d2113ae0eef4f4f33063b87ff4139e71c977318ca1d1d2abeeaa8a826c26cb
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://ggtraff.ru/123?keyword=cna+kaiser+contract+2018+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4370066/normal_5fa19443bc800.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368958/normal_5f915e93e2dde.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385009/normal_5f947dbe41eb8.pdfIn PDF document text
    • https://gasipepimajut.weebly.com/uploads/1/3/4/3/134367512/gipevabirol_xogagav_xamibexena.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372073/normal_5f8f3a202880f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388285/normal_5f9d87a6501cf.pdfIn PDF document text
    • https://ponixojezunuto.weebly.com/uploads/1/3/0/9/130969897/025ae.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/4c39c33c-756c-40e0-89de-2e4c670eb296/wutewun.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/76293210357.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0010428f-0819-46d1-ad45-decac2e30960/71961708071.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8830bcdf-92bc-425b-8d67-fc3ec2040c56/bexoxobuje.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files/juruvatovelodakebosej.pdfIn PDF document text
    • https://s3.amazonaws.com/rovikibixu/lebazepegi.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_off000062bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x62BB 5604 bytes
SHA-256: 3aafce4d2def50ebfe460f475d5c67a656351f18a432c516f2b3d947e931716b
font_01_sfnt_off000075e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x75E8 10936 bytes
SHA-256: 7c1676806ca610aa9dd51c33284dda9104477cdcff0b0b921678e56cb5aacb8f