Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7d4fb78b49b2df7…

MALICIOUS

PDF

57.8 KB Created: 2020-10-15 20:43:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 24b62221ca220c7fc0a8a27f5ee3dc4e SHA-1: 39bb06edb93d403528a9a32a8ea3cd0d2da1d8f9 SHA-256: e7d4fb78b49b2df72c0fbf5f2668542e52a1c0afeb88d2f43f63056f66767999
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • 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://ggtraff.ru/strik?keyword=hiram+abif+libro+pdf In PDF document text
    • https://ridolagu.weebly.com/uploads/1/3/0/7/130775195/a5315a633a034.pdfIn PDF document text
    • https://jiwadurator.weebly.com/uploads/1/3/0/7/130776405/sozog_bovabaji.pdfIn PDF document text
    • https://dofazodasi.weebly.com/uploads/1/3/0/8/130873943/lozonen.pdfIn PDF document text
    • https://fijojonibiw.weebly.com/uploads/1/3/2/6/132681787/a8401ec7a9859.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/9232432.pdfIn PDF document text
    • https://kenilajapa.weebly.com/uploads/1/3/1/0/131069910/4925866.pdfIn PDF document text
    • https://pumowurunumig.weebly.com/uploads/1/3/2/7/132740285/b626fe5a22736.pdfIn PDF document text
    • https://site-1040990.mozfiles.com/files/1040990/nefigalitobifenis.pdfIn PDF document text
    • https://site-1045346.mozfiles.com/files/1045346/tozupamekasikid.pdfIn PDF document text
    • https://site-1048222.mozfiles.com/files/1048222/mixaroxabixufobomaxebo.pdfIn PDF document text
    • https://site-1048453.mozfiles.com/files/1048453/25802245202.pdfIn PDF document text
    • https://site-1038531.mozfiles.com/files/1038531/38546991346.pdfIn PDF document text
    • https://jamuseramomuf.weebly.com/uploads/1/3/1/8/131871426/059af83888e3b6.pdfIn PDF document text
    • https://pobezewimo.weebly.com/uploads/1/3/2/6/132681951/fapobe-tutirikalekaluj-loxamu-pobusoke.pdfIn PDF document text
    • https://tivakoxidedopa.weebly.com/uploads/1/3/0/7/130776298/purogopijalu_fuwagakiketul.pdfIn PDF document text
    • https://kelobutino.weebly.com/uploads/1/3/0/9/130969458/3121684.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/77aaaa64-54a1-4411-a68c-5c1781b7280e/bipukubitepov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68f1198f-705f-447a-bd28-50068238f4a5/rovunijeduxusasive.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/26509d6e-0824-40dc-a78e-1c906f2be579/74647238864.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c5ce358-c2a5-40e7-9c13-cc1c0e2de9fa/5785703795.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9e02c509-7799-4eb6-8523-006bba261197/nanajitanosenesoxekeke.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53aaa3f0-6684-4f20-8b58-0247d4db2bcf/xejigojito.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_off00009875.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9875 4592 bytes
SHA-256: e9576e0749a1a927bfb8ee338f1161cbac67d50114c9ec812453dad98747f55f
font_01_sfnt_off0000a7f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA7F2 10440 bytes
SHA-256: cf5400a948a9e758012a058a4814233597ae51249d38f42bf2edee9d84c6c77c
font_02_sfnt_off0000cbaf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBAF 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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