Malicious PDF — malware analysis report

Static analysis result for SHA-256 f25bb2ffc0db5812…

MALICIOUS

PDF

52.5 KB Created: 2020-11-05 16:59:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: eab29fe5ef7970bca69f449107f8fcc6 SHA-1: 9c9c3dc67aff4a4315ceb37ebeec4fc14e5d6ddb SHA-256: f25bb2ffc0db58127889265a043ac10550cd145d0c9f0ff0b6e24b29b7121299
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://cctraff.ru/123?keyword=diary+of+a+wimpy+kid+double+down+plot+summary In PDF document text
    • https://cdn-cms.f-static.net/uploads/4386836/normal_5f8ccc5e99c0b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393751/normal_5f95b29aafc28.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368243/normal_5f9ed4c5dfd56.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367940/normal_5f8bc3fdbbd43.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/tadovu/4445671467.pdfIn PDF document text
    • https://s3.amazonaws.com/tibanepoxilibud/90345309462.pdfIn PDF document text
    • https://s3.amazonaws.com/tojabixefova/27508918104.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/roblox_group_finder_game.pdfIn PDF document text
    • https://s3.amazonaws.com/rijaliwiguvex/costco_samsung_58_tv.pdfIn PDF document text
    • https://s3.amazonaws.com/retobifulipo/5648928962.pdfIn PDF document text
    • https://s3.amazonaws.com/vatosolikijike/hot_tub_deck_plans.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_off00008cee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CEE 5584 bytes
SHA-256: d94f3f0563db2e4f6b100875cdb7b15c446cd421dcd1b15ecec78ce55ec2e515
font_01_sfnt_off00009ff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9FF5 10892 bytes
SHA-256: b1bb0c351471b553c1265b3cc2753a988ec21a9192596a761a924b05928e7cc9

Open this report in the interactive analyzer, or submit your own file for analysis.