Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0e31fdbe5aaf089…

MALICIOUS

PDF

41.4 KB Created: 2020-11-05 01:52:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: f07ae26889be6905790dc9818daf0baf SHA-1: 2d7a5c455339bd45afbe9729a54501919c22b358 SHA-256: e0e31fdbe5aaf08900ad49d53d7e6bc2ba83bd9a5ec8e81d6de69c22833f77a6
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://cctraff.ru/strik?keyword=xdating+login+page+app In PDF document text
    • https://cdn-cms.f-static.net/uploads/4374379/normal_5f9cc98f14f1c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416495/normal_5fa07e43e0744.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366666/normal_5f871bacea41c.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/zeworibuzoza/telezevafatezava.pdfIn PDF document text
    • https://s3.amazonaws.com/varoximu/12396868458.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8646d6de-1138-4a31-9f9c-df3810e0834d/xoxituzara.pdfIn PDF document text
    • https://s3.amazonaws.com/sefukirexuwekij/gotaganewajigejilokida.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/db8b05b0-b25b-47a0-a0ac-1304872970b8/7423306432.pdfIn PDF document text
    • https://s3.amazonaws.com/kavitokolezub/palivezurasefubemopi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fd64a6b-f537-444b-b037-b4aadbae51a0/loganubakosiwim.pdfIn PDF document text
    • https://s3.amazonaws.com/dotivaf/91141423474.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/42102267909.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_off0000671a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x671A 4828 bytes
SHA-256: 2cbb54bd5a4c2684106461771ff777202ee9e9c78dffdd4f1a93dd85ef9b6195
font_01_sfnt_off0000779e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x779E 10016 bytes
SHA-256: f0c8357371107ea99d7a3ba97002edf6f8cd757a261c2432c9afb4a70e6faae9