Malicious PDF — malware analysis report

Static analysis result for SHA-256 c15dc34e2b903d88…

MALICIOUS

PDF

43.1 KB Created: 2020-11-02 16:23:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 1b95d8d2fe78f47433a643a71631784a SHA-1: d8aff4afc07ace0d5d1fdc96755d08c339b8b19c SHA-256: c15dc34e2b903d8882986f75763eccdb0278e9956e768997e3766f95512a42b1
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.cc/123?keyword=no+belly+button+song+veggie+tales+lyrics In PDF document text
    • https://cdn-cms.f-static.net/uploads/4407066/normal_5f9d12f92cf6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383703/normal_5f8c147c6f500.pdfIn PDF document text
    • https://xiliwawegumokap.weebly.com/uploads/1/3/4/0/134096460/bater-bepewul-retekure-daxetefizi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366050/normal_5f973c2810f8d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371536/normal_5f8ef95b810ac.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/030ef183-faee-4208-9c8a-71d71e62ee75/80660862632.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/3154/1918/files/excel_search_worksheet_name.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dedd3b12-50fe-45e4-afab-ef39b9072c88/the_meditative_rose_location.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/62c38cea-60fc-477d-aec9-6068ea182c67/pupoxes.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/871021db-5663-4861-b19f-d12259c625ec/78276986057.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/65f5c82e-efb6-47e7-98a5-7c4ec1416a16/vuwazozowixukilebud.pdfIn PDF document text
    • https://s3.amazonaws.com/pazifetanegapu/kimajodip.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_off000068d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68D9 5236 bytes
SHA-256: 2387e990a0841a9ac5c17c22d341b6fcc552188ce7b9616b74800ab8b5eda8e6
font_01_sfnt_off00007ad1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7AD1 10656 bytes
SHA-256: cab68521f22de048bca82184e30e4e239ff2afdc4e1ff97050cc2acebd62e02b