Malicious PDF — malware analysis report

Static analysis result for SHA-256 94e0177738e1a593…

MALICIOUS

PDF

48.1 KB Created: 2020-11-06 15:51:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 2d1bed9bf9abd430a5e2bae39c1fffeb SHA-1: 024b6f49c46c45919e2efe6b741f942886bf2f9a SHA-256: 94e0177738e1a5932a583a24a0c7bc1816906f5c3c84fc58909082013f8f6044
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=painted+desert+sheep+craigslist+waco In PDF document text
    • https://gafekiwukuwemul.weebly.com/uploads/1/3/4/3/134313713/wizeref.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416939/normal_5f9f8a004577a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382770/normal_5f90c9246e440.pdfIn PDF document text
    • https://wepugimi.weebly.com/uploads/1/3/1/0/131070973/pamokabumafapi.pdfIn PDF document text
    • https://munujagafunudo.weebly.com/uploads/1/3/0/8/130873736/7282895.pdfIn PDF document text
    • https://nevedaroxizewav.weebly.com/uploads/1/3/4/5/134592578/jirevurelojawori.pdfIn PDF document text
    • https://vadurevagide.weebly.com/uploads/1/3/3/9/133999829/jivukopabonav.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379606/normal_5f94d158c3bb9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410679/normal_5f98a9acd6f33.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://fimalul.files.wordpress.com/2020/11/xenikefeg.pdfIn PDF document text
    • https://wixisodek.files.wordpress.com/2020/11/kopotazedeliwisorejepi.pdfIn PDF document text
    • https://s3.amazonaws.com/potofaw/molecular_approach_to_chemistry.pdfIn PDF document text
    • https://nevosaxovib.files.wordpress.com/2020/11/fizimobaruweboratiweti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ab6a41bf-df9c-4a04-925a-58f0f936b797/guia_del_peregrino_camino_de_santiago.pdfIn PDF document text
    • https://s3.amazonaws.com/wuniku/pibibagivi.pdfIn PDF document text
    • https://mutozofe.files.wordpress.com/2020/11/65548376527.pdfIn PDF document text
    • https://fategokixeju.files.wordpress.com/2020/11/jasajapabuzodevuboja.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_off00007b70.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B70 5428 bytes
SHA-256: eea6dd69141974c5ff7179bd4d99b261d2e0ee679476818b258f2331a16693d7
font_01_sfnt_off00008df0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DF0 11012 bytes
SHA-256: 446b105511847d3dbe7b9e3878b000af650ff5087e4dd3f5e7e3106dc8e73202