Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb3fe3870f4e2879…

MALICIOUS

PDF

37.1 KB Created: 2020-11-07 19:47:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 30c3325c76078e19a6f3378f62668c63 SHA-1: ba09bf6c5546e76386fe05beb5382da87362ed09 SHA-256: eb3fe3870f4e28790a88b25bfffc8652bc1330339ebe24eb1340958eaab67bea
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://traffmen.ru/aws?keyword=secret+garden+lyrics+chords In PDF document text
    • https://nibawomufexax.weebly.com/uploads/1/3/4/3/134371272/jeferiwonewo.pdfIn PDF document text
    • https://lotogifivetizub.weebly.com/uploads/1/3/4/3/134309957/2655136.pdfIn PDF document text
    • https://sopodepewujo.weebly.com/uploads/1/3/4/3/134340903/470941.pdfIn PDF document text
    • https://xijoxamapapi.weebly.com/uploads/1/3/4/3/134337958/xilezonofonuxodidi.pdfIn PDF document text
    • https://zevigetadafuwun.weebly.com/uploads/1/3/0/9/130969942/2923045ee.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/regegozumekoza/21953141613.pdfIn PDF document text
    • https://gigevuko.files.wordpress.com/2020/11/ww1_and_revolutions_study_guide.pdfIn PDF document text
    • https://fimalul.files.wordpress.com/2020/11/xenikefeg.pdfIn PDF document text
    • https://lodoxepal.files.wordpress.com/2020/11/reremuradivuvevedivogobid.pdfIn PDF document text
    • https://s3.amazonaws.com/mogelebolep/thinkgeek_website_shutting_down.pdfIn PDF document text
    • https://dowuwiridewe.files.wordpress.com/2020/11/muzamexivigasokojinanuzur.pdfIn PDF document text
    • https://xejajipix.files.wordpress.com/2020/11/aurlie_laflamme_9.pdfIn PDF document text
    • https://romekelisefo.files.wordpress.com/2020/11/nitunawikudaremutujozudok.pdfIn PDF document text
    • https://rusemutizad26936132.files.wordpress.com/2020/11/50769683979.pdfIn PDF document text
    • https://nenupewav.files.wordpress.com/2020/11/kixabowenuxijasawi.pdfIn PDF document text
    • https://nerukubukob.files.wordpress.com/2020/11/case_interview_secrets_victor_cheng_free.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_off000053e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x53E9 5404 bytes
SHA-256: 07f34d7e257f117cbd061e0117a8ea153ea77b38c27204cd9c5fa541cfaca4bd
font_01_sfnt_off00006645.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6645 9748 bytes
SHA-256: 843532309259bdcfd118cffd2537198c8fe84ec857ece76e66d5e0e185622388

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