Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0ae8ebdce1c43cf…

MALICIOUS

PDF

42.4 KB Created: 2020-10-16 02:39:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: b768a15016f9bb94acb242a6b926937f SHA-1: 2b8544b427779edfca604c55298ff2a7cb781cef SHA-256: f0ae8ebdce1c43cfcf9fa004f48110d9a7f1637d51b22eeaca7bf28f1d864d63
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://ttraff.com/pify?keyword=dental+handpiece+maintenance+guide In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367921/normal_5f875afbe9dd4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369146/normal_5f88d7c8a6aa8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368977/normal_5f88bae9d4e7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366015/normal_5f88bb7ebbc16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366984/normal_5f88d13f0669b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366625/normal_5f88bc2f20a9f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365583/normal_5f871ba386297.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366374/normal_5f88b5c97b160.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365600/normal_5f8703ae7dc0c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366659/normal_5f882ee8f0f0f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368751/normal_5f885ba2bed39.pdfIn PDF document text
    • https://jonukejunuxesa.weebly.com/uploads/1/3/1/4/131409236/6947890.pdfIn PDF document text
    • https://dojudiwoju.weebly.com/uploads/1/3/1/4/131406456/xafiwudonugopuripizo.pdfIn PDF document text
    • https://xojerajap.weebly.com/uploads/1/3/1/3/131384359/xekena.pdfIn PDF document text
    • https://fanavepuru.weebly.com/uploads/1/3/1/8/131871984/dapufomoxojojox.pdfIn PDF document text
    • https://gusumadanu.weebly.com/uploads/1/3/2/6/132695601/pasex.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/xewuj.pdfIn PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/6b525be.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/80af9a2c-beda-4df7-973d-4a9b0baeaa84/katosisiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63329374-44ca-4e64-b86f-2546f9027664/6235682064.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8534347-7a54-4e1f-bd26-c751ba62f3e7/momixeteguxarisesamifa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bda17a7f-d4a2-44ef-a7cc-05ee2eee86eb/vuzetepidudovefazulogugeb.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1c56be8c-c4df-4d47-8941-f146e38f0605/lefoxumas.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_off00006861.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6861 5212 bytes
SHA-256: 3be137eee633bd5405c596b7e1b68571abb760824b0b47813da626ab51b8d720
font_01_sfnt_off000079f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79F3 9980 bytes
SHA-256: 3a970dde43ade2350bc4cce700cd883e7f4f6cffaa01b1df227d66cb8167483d