Malicious PDF — malware analysis report

Static analysis result for SHA-256 fca2527ce853c4d0…

MALICIOUS

PDF

43.4 KB Created: 2020-11-09 03:48:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: fdf4fd7b8da2db63e0d714600263875d SHA-1: 9cc09e292011a08f659e5e02901821db14eea106 SHA-256: fca2527ce853c4d0c69957125151f18495ad91152e115c762f56ee0ec801d374
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=the+secret+life+of+bees+quotes+and+pages In PDF document text
    • https://cdn-cms.f-static.net/uploads/4388163/normal_5fa3d643d06ee.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401545/normal_5f9e25088f1d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365646/normal_5f9b51548d6fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391605/normal_5f9ac80fd6375.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379736/normal_5f8bffdbbdbcb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427781/normal_5fa3c637cc48f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378599/normal_5f8dbdb59c54c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414173/normal_5f9622b2887b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378606/normal_5f94375956f10.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372384/normal_5f957c4a8d367.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369768/normal_5f99ed27a5e36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417305/normal_5f967acbd2a42.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/1c2d9568-a42f-46fa-8cb4-aab8db99dceb/xifidezabazivalaseza.pdfIn PDF document text
    • https://s3.amazonaws.com/tometubufimopim/epic_of_gilgamesh_study_guide_questions.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9f44eedc-3d2a-4ad4-9ba4-ef55046ad7a0/84854417929.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/bomag_bt65.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_off000069b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69B4 5632 bytes
SHA-256: 3b9e31fbe032c02ad8ae668e1a0fc701414c3dd913786ee56fe9a87a970987ee
font_01_sfnt_off00007cc3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7CC3 10592 bytes
SHA-256: fe54ed47dec37a98767a1ff33488e64b7485311dfb63180f05de3b9b0251a7e8