Malicious PDF — malware analysis report

Static analysis result for SHA-256 5305be8477a3fa36…

MALICIOUS

PDF

39.6 KB Created: 2020-11-09 08:43:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 6106453d2579b4c8db56189aa7bf3f3b SHA-1: 1253930581126a22911f10e20444b21c0d49637f SHA-256: 5305be8477a3fa36eba5c0fe87e1e55f3ff7f0a978f50619632c5f8406ab2c6c
94 Risk Score
Tags
free-cdn-ebook-manual-lure

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://traffmen.ru/123?keyword=manchester+england+uk In PDF document text
    • https://cdn-cms.f-static.net/uploads/4420600/normal_5f9a94caa0de4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367632/normal_5f8feada1f96b.pdfIn PDF document text
    • https://pewoxunoxosizix.weebly.com/uploads/1/3/4/3/134318290/4ec1da626003.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416302/normal_5fa380fed3461.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383928/normal_5f8d61e237263.pdfIn PDF document text
    • https://sokegipamemaxo.weebly.com/uploads/1/3/4/3/134345901/wuladozenovefeso.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/baposivarabuj/84885127910.pdfIn PDF document text
    • https://s3.amazonaws.com/medadele/bolens_weed_eater_repair_manual.pdfIn PDF document text
    • https://bosuwepaxe.files.wordpress.com/2020/11/wogejopa.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_off00005bbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5BBD 5268 bytes
SHA-256: 2dfdd522c10578556b3ee47fcf340f0ce24f95fe427637ff2c6a1504a0b57f70
font_01_sfnt_off00006da9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DA9 10832 bytes
SHA-256: fcd8f48d6a84c3aab1ac9b3b5fc8b2542e42008a6cf07da49a47cbf4ac6e36cc

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