Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1fc342c554bd7bd…

MALICIOUS

PDF

44.5 KB Created: 2020-11-08 15:59:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: c58bc588122908f1a15e0583c0534613 SHA-1: c3fe7cfb053173d77fb17e37c23031969d597ccd SHA-256: c1fc342c554bd7bd3b4521c1e4485754e5afefd01c505a1c3edacbcd6f764731
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://traffking.ru/aws?keyword=coupon+codes+for+ebay+april+2020 In PDF document text
    • https://sakeneri.weebly.com/uploads/1/3/4/3/134339958/fd3926d818ac244.pdfIn PDF document text
    • https://dexajuvado.weebly.com/uploads/1/3/4/4/134470202/rinanubowixoda.pdfIn PDF document text
    • https://xawiwewediwo.weebly.com/uploads/1/3/4/0/134017039/42cc129e1.pdfIn PDF document text
    • https://vodipewelo.weebly.com/uploads/1/3/1/6/131637384/dulixidopakirimi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408461/normal_5f93b46ab19d1.pdfIn PDF document text
    • https://dosaremuxabibi.weebly.com/uploads/1/3/0/7/130739916/lipagowo_lujapila_lupote_getodurezigidol.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4392647/normal_5f9e16580a585.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://gudusuk.files.wordpress.com/2020/11/8783072828.pdfIn PDF document text
    • https://zojemadej.files.wordpress.com/2020/11/73587489466.pdfIn PDF document text
    • https://tafexoru.files.wordpress.com/2020/11/3294531957.pdfIn PDF document text
    • https://tadegekana.files.wordpress.com/2020/11/vitomokevonixadibevu.pdfIn PDF document text
    • https://fovodifikade.files.wordpress.com/2020/11/jackson_pollock_biografia.pdfIn PDF document text
    • https://zesosuro568656899.files.wordpress.com/2020/11/lifefomabur.pdfIn PDF document text
    • https://xeruluzolu.files.wordpress.com/2020/11/vopupodes.pdfIn PDF document text
    • https://wafaruk.files.wordpress.com/2020/11/pitamog.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_off00006b46.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B46 5568 bytes
SHA-256: 878de8b441284bde145718557512d037c9eb1f860f5c32e79c1e1bf8d978cfda
font_01_sfnt_off00007e41.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E41 11468 bytes
SHA-256: e99c766fc2f46533d92fe7a4c0cab2148b75172cc9b557da63a3774caa9097c1

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