Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6fc56708c0b2bd3…

MALICIOUS

PDF

45.9 KB Created: 2020-11-05 07:51:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 7fef8a410327a3510ae2ddf08e7ef1bd SHA-1: d8536b886f048f74a328bab52cb17e765e1bbc8a SHA-256: f6fc56708c0b2bd342aa47e585a411575604df919d9629da3cdaf29a567e570c
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.club/123?keyword=dragonwings+by+laurence+yep+pdf In PDF document text
    • https://nobinetezo.weebly.com/uploads/1/3/0/9/130969761/wilononuremorev_surawolumizi_pikenolugov_juwijisa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371266/normal_5f8b43d2f2580.pdfIn PDF document text
    • https://tunomofezu.weebly.com/uploads/1/3/2/3/132303147/7bae626c464.pdfIn PDF document text
    • https://morekifozolil.weebly.com/uploads/1/3/4/3/134332894/5247243.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/kigavanus/48116723132.pdfIn PDF document text
    • https://s3.amazonaws.com/jakujakula/41433976761.pdfIn PDF document text
    • https://s3.amazonaws.com/resixexi/82725396008.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef7773f5-4ec0-4365-9b67-7d5bc6d59444/18414891977.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e016bf9-cc83-401c-90c7-4feb6bb7fa43/93304872565.pdfIn PDF document text
    • https://s3.amazonaws.com/mefovu/68462068280.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/big_fat_notebook_math.pdfIn PDF document text
    • https://s3.amazonaws.com/febopa/1989638105.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/sustainable_development_examples_companies.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006913.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6913 5656 bytes
SHA-256: 4f5558d593df67f4f1a8e314ea610f633d4926a1984d6eeaf1bf94067ca100d7
font_01_sfnt_off00007c72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C72 1800 bytes
SHA-256: e9a5a1f6ed95b1e3669933bb00002ad32a1708c3e0b735191cad5e02368a6c7d
font_02_sfnt_off00008500.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8500 11052 bytes
SHA-256: 2b0ae10d09ab16f51603c3534cc4ee7949dc2688445b85acbc4fe41d3db8e21d