Malicious PDF — malware analysis report

Static analysis result for SHA-256 76569bf7aca01bad…

MALICIOUS

PDF

73.4 KB Created: 2020-11-02 20:07:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 4a0ed1007d1baa92edae92f3a953f3cf SHA-1: 227ecff9573e6ec329e7fa8fe2f265bab9d7f1be SHA-256: 76569bf7aca01bad6b7563f7a45c99743303e7a4d58846f8835bb787b0f13e4a
154 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and 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 4

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/aws?keyword=mako+bam06h+compressor+owner+s+manual In PDF document text
    • https://cdn-cms.f-static.net/uploads/4365598/normal_5f870edb3f255.pdfIn PDF document text
    • https://sazojowob.weebly.com/uploads/1/3/4/3/134351878/5b31c8c.pdfIn PDF document text
    • https://poxanopa.weebly.com/uploads/1/3/4/3/134380657/muvuv.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/041a544d-a878-4233-b5f3-db6fdd61276a/63136326487.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a33a681a-45b5-4c22-8fdf-188c080775d3/automotive_engineering_salary_in_florida.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36f46b75-5c9c-43e7-9174-bb24ae009ac5/84646991928.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/497a6325-d29f-435f-be6f-2c99c604ba4e/25200100924.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f1415a7b-3399-4f96-9294-d24ae6de0c00/reporting_experience_definition.pdfIn PDF document text
    • https://s3.amazonaws.com/limewub/xekasexukilivo.pdfIn PDF document text
    • https://s3.amazonaws.com/zunaduxa/amar_chitra_katha_new.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2817b5c6-ae0b-48c1-ab86-13b633c602e0/vewipivipuwelakufe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c051c155-6383-44ff-9c1a-b87ea93d4c5b/lisivizubopazebanogo.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e092.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE092 5768 bytes
SHA-256: 402e823145b0a02b6643538ff6af4dd27dbe5c71777622308c003c6a4777332e
font_01_sfnt_off0000f425.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF425 10772 bytes
SHA-256: 794d3e8777fe3705057ca079f5125a4ad2fbfdcc29b5187991751a88301111af

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