Malicious PDF — malware analysis report

Static analysis result for SHA-256 64162355925efa49…

MALICIOUS

PDF

70.2 KB Created: 2020-11-08 10:11:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: c5b5fd464a1236097646b51086a0efa4 SHA-1: d3c7e5f925cece27676a1fe7ccfa31ae280bd066 SHA-256: 64162355925efa49ba70158e634a2b84684ee7ab96a6a40470a35396b423da2e
66 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 1.0000

Heuristics 4

  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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/123?keyword=renegade+racing+hacked+unblocked+games+66 PDF link annotation
    • https://wuwenivavubujer.weebly.com/uploads/1/3/1/4/131437756/2042759.pdfIn PDF document text
    • https://pamuvomamutafa.weebly.com/uploads/1/3/4/3/134305197/32e3ae7540a508.pdfIn PDF document text
    • https://nogomikosisodop.weebly.com/uploads/1/3/2/6/132681488/pukujuvirenujik.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/ginutu/97138981293.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8bb27a71-ebde-444b-98bf-5c685e11ee50/4590737445.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f8fb93ea-24ac-4c72-a6eb-1cbd90cd43bc/47095889607.pdfIn PDF document text
    • https://nevosaxovib.files.wordpress.com/2020/11/vuvemi.pdfIn PDF document text
    • https://s3.amazonaws.com/vobuturinivi/luxojevonozosejobuj.pdfIn PDF document text
    • https://s3.amazonaws.com/bezutu/gabusowamitejabe.pdfIn PDF document text
    • https://ganilumigipe.files.wordpress.com/2020/11/5947407553.pdfIn PDF document text
    • https://bekovepevim.files.wordpress.com/2020/11/leniwibewuwiweki.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/60bfcf2b-7150-4675-9fb4-630af5ff84ba/csi_the_experience_answer_key_for_case_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f2fef3e-a944-43e3-a8e4-4408e59e3ddc/97971353365.pdfIn PDF document text
    • https://pifakimep.files.wordpress.com/2020/11/fododuxuxinoni.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b79a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB79A 5720 bytes
SHA-256: 6ecb5f8101306e6ced1fc404f12cb0db8eaefac2a496f9df887a81cd0f40f1a0
font_01_sfnt_off0000cae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAE0 5360 bytes
SHA-256: e8087873d815baa31b37ffaccdaa5a38ee9d59f189f225e747c54b4d4f32d851
font_02_sfnt_off0000de25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE25 14052 bytes
SHA-256: 29eaa99c1c09bd81b6eef36e763efaff8c9d7263a0d9fdf6f055b88f1ddc8c65

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