Malicious PDF — malware analysis report

Static analysis result for SHA-256 30247b6d0a238e78…

MALICIOUS

PDF

47.2 KB Created: 2020-10-30 16:11:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: 32573f97d8879d3dcdee0785c5e158d9 SHA-1: 86aa6843fa73cec644831f9a7b758081f2f9636a SHA-256: 30247b6d0a238e78b9a36a948faa1b25ce5c0f8c9444092629f4976d7c2e3eed
124 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains embedded URLs that redirect to malicious infrastructure, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The document body, though heavily obfuscated, contains a URL that appears to be a lure for a "hack tool", suggesting a phishing or social engineering attempt. The ML classifier also strongly flagged this PDF as malicious.

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 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.
  • 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://ttraff.link/123?keyword=marvel+contest+of+champions+hack+tool In PDF document text
    • https://tifedufuzitiji.weebly.com/uploads/1/3/4/3/134353288/695bac5499b8124.pdfIn PDF document text
    • https://ximazula.weebly.com/uploads/1/3/0/7/130738777/56813cb48347.pdfIn PDF document text
    • https://vodoxakitukep.weebly.com/uploads/1/3/4/3/134335140/9284389.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379240/normal_5f95828b1d019.pdfIn PDF document text
    • https://vonubaxuted.weebly.com/uploads/1/3/1/4/131452839/xiroxoxolaga-jeseranelimaw-zudaliwuruxow.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368474/normal_5f87a4e6e7aa4.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/9a49fcdf-0b7c-4a3c-ba2b-0b4909193c9b/10629384994.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81ab4940-6a76-424a-99bf-f3c1bc5a74aa/45356410005.pdfIn PDF document text
    • https://s3.amazonaws.com/fejatepudopito/esc_guidelines_2017_valvular_heart_disease.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/5832/6435/files/banco_popular_servicio_al_cliente_tarjetas_de_credito.pdfIn PDF document text
    • https://s3.amazonaws.com/pozokimepe/adjectives_worksheets_for_grade_2.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6bc42d5f-ba49-4733-9b9d-97451b4ecd43/80923073024.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_off0000794b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x794B 5384 bytes
SHA-256: 251ab24e80219504a60e7ad4c086cc45028178e55cc0e3083adf1023fbd04fcd
font_01_sfnt_off00008b87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B87 10772 bytes
SHA-256: d8f7ba3cd44f9caa4bf3cd2acaed2ae869d806c201f45b7372c9aa34111d2f6f

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