Malicious PDF — malware analysis report

Static analysis result for SHA-256 e130caa9cf09a3ba…

MALICIOUS

PDF

44.0 KB Created: 2020-11-06 10:50:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 2156d98b386022ded8db3c3918fd5645 SHA-1: 4557bb8cf5fdf0f8792b5d4359f71fd537f67455 SHA-256: e130caa9cf09a3baf9309b7252eb2be503f892e47093c98bda8857cd02ea137f
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://traffine.ru/123?keyword=watch+nba+games+unblocked In PDF document text
    • https://kabudededawizo.weebly.com/uploads/1/3/1/3/131383409/gamigakusujusul.pdfIn PDF document text
    • https://mulelene.weebly.com/uploads/1/3/4/4/134440938/dewuzusesuzo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412593/normal_5fa1111489c23.pdfIn PDF document text
    • https://papunagaku.weebly.com/uploads/1/3/1/3/131384156/tixijokam.pdfIn PDF document text
    • https://dofazodasi.weebly.com/uploads/1/3/0/8/130873943/toragexo-zusebenagura.pdfIn PDF document text
    • https://nosuxiseliv.weebly.com/uploads/1/3/4/5/134578333/c408de5f11de6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365576/normal_5f87326062379.pdfIn PDF document text
    • https://naxedomabaxa.weebly.com/uploads/1/3/1/6/131606472/xusize_fipubes_vimug_xadenif.pdfIn PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/jupigimovizatal.pdfIn PDF document text
    • https://koxoganonigowup.weebly.com/uploads/1/3/1/4/131408343/xomireliz.pdfIn PDF document text
    • https://xogexemufak.weebly.com/uploads/1/3/1/4/131437987/jodesox.pdfIn PDF document text
    • https://tibulewozimok.weebly.com/uploads/1/3/4/0/134017320/1106385.pdfIn PDF document text
    • https://dukutisanag.weebly.com/uploads/1/3/4/3/134318107/ninelavozefefez.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/fukepez/51622157049.pdfIn PDF document text
    • https://s3.amazonaws.com/penale/kern_county_sheriff_s_dept_inmate_search.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_off00006b63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B63 5476 bytes
SHA-256: cd11d54f7b5dc49633997a5cb7128c4f0efee23a8decbb64c6f291dd035b65f8
font_01_sfnt_off00007de7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DE7 11060 bytes
SHA-256: 0171a51385b7aa2ec1341ffe767fa7fb8ea5f1e196c27dc02400e962c3f104bd

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