Malicious PDF — malware analysis report

Static analysis result for SHA-256 e89bf3dc90672d9c…

MALICIOUS

PDF

44.1 KB Created: 2020-11-05 16:20:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 2515d4d7edfaa512ce941c0eedb69973 SHA-1: da185e368792ad5e81850064e455f23efd90fdc6 SHA-256: e89bf3dc90672d9c1bddc39d6b4524f0c700e864130d3b0bba6dcff90dbfe5cc
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://gettraff.ru/strik?keyword=harley+davidson+slot+machine+for+sale In PDF document text
    • https://cdn-cms.f-static.net/uploads/4423430/normal_5f9cd781303e0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383156/normal_5fa0ca7ebfc9e.pdfIn PDF document text
    • https://revibafejinaj.weebly.com/uploads/1/3/4/4/134485322/8620148.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366317/normal_5f8e41c35748d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368956/normal_5f9d65e5a5933.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405650/normal_5f9b30040123d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370051/normal_5f8fb25741747.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388156/normal_5f92b1526694f.pdfIn PDF document text
    • https://seriraradekabas.weebly.com/uploads/1/3/4/0/134016679/wozazeromilafodezem.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402722/normal_5fa0ac3bccbdf.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/848437a2-27d0-461d-bc8b-51baa614ff4b/10976779622.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2c60baa-b4bc-43e5-995f-aab246ceeb26/52917753790.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/482e6358-1b7d-4d50-ac1c-77c43db0af16/raloporipuruveru.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0a32f72-7495-4b19-9d37-a28d8ba64383/validus_preparatory_academy_ny.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06c33964-39dd-4875-bcaa-91ae15e993ee/gepijuwo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/012aaf4a-2666-4f60-8b34-4f37efa624b0/sutotu.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_off00006e04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E04 5384 bytes
SHA-256: 3346b7333f9fc50d81a5ee8c129aef5c18c8dc6223e5a87e53dee73e1ddd3f34
font_01_sfnt_off00008034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8034 10248 bytes
SHA-256: 5362a59f382efb0332348a04487a8217d74cca2b4a065a5de46484d3ea78a1c2

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