Malicious PDF — malware analysis report

Static analysis result for SHA-256 094264f054c8617e…

MALICIOUS

PDF

77.7 KB Created: 2020-12-01 12:47:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 36e6ca08ff7060f824dbbfb338dce770 SHA-1: 14ef6d26eecb8603a781a42bd8c87173604b58e5 SHA-256: 094264f054c8617ef278134e4b283d80940c878c4bca2cd880b8940f04cfde60
96 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 embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafficel.ru/strik?utm_term=ff14+born+again+anima+solo PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4416923/normal_5f97ccc677285.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450724/normal_5fa307f2eb7af.pdfIn PDF document text
    • https://nidiladidubupa.weebly.com/uploads/1/3/4/7/134753920/640627.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422906/normal_5f977aa1798ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413570/normal_5f9e78e537521.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/f56cdc2f-8f58-4478-93c8-2fd5af9879f9/96161680019.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e5b66ce7-dc06-4b29-bb2a-ef851180f478/resibidalake.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/95340f97-71f7-4315-a543-fdb5933162fc/ceh_study_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c0d077cd-1cc9-4484-83d3-e22ef6478576/80677104798.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5c8b418d-8e16-4c67-8bcb-51bc926c50cf/18252534031.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2b7b83b6-0488-4749-bdd6-fdc98f565ebf/mapleroyals_hp_washing_guide.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf61b17acac6192ab8b53a/1606377906035/pitbulls_for_sale_in_albany_ny.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc30859ab79f442f23780a8/t/5fc5d8ab3570fb44d1cd54d7/1606801580329/18237130083.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/acebf401-afef-4659-bded-1105ee6d6a30/49234563248.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_off0000ede3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDE3 5324 bytes
SHA-256: 460b5fdae934b15c5a42bb095faeb4fb7a51e96947064647ba96a13216f734b7
font_01_sfnt_off0000fff5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFF5 12960 bytes
SHA-256: 4a10169002068a69acd5ce365a46e1253240f23388fa12562cede7d0e680a8b5

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