Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cc8c1e861773597…

MALICIOUS

PDF

34.6 KB Created: 2020-11-01 11:50:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: d8d2e877ee1b06023fe50099175be7df SHA-1: f29d8742f12b1d99c1652ee53d3d39f3e57cbd08 SHA-256: 2cc8c1e8617735977da61e30383299dc468f76260eba39f8bb289425fa75caa1
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.me/123?keyword=unblocked+games+head+soccer+2017+la+liga In PDF document text
    • https://zuvubexusemeto.weebly.com/uploads/1/3/4/3/134373725/duzalef-gukegalawafaw.pdfIn PDF document text
    • https://wefamojugibe.weebly.com/uploads/1/3/1/1/131164519/ropisugabujo_pumikaxen_xozikateti.pdfIn PDF document text
    • https://bufuxilanu.weebly.com/uploads/1/3/4/4/134402831/purugurevulupogikus.pdfIn PDF document text
    • https://zizuralozirufu.weebly.com/uploads/1/3/1/4/131483034/fujatebivab.pdfIn PDF document text
    • https://lodovanu.weebly.com/uploads/1/3/4/4/134403978/a491e720.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/zuxadol/13365743456.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0459/9031/4141/files/writing_problem_statement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1387/2072/files/mvvm_android_kotlin_example.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d79f2b8f-5a36-4fac-8b8c-258e0fdbe0c9/49868352887.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_off0000473d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x473D 5952 bytes
SHA-256: 80fba2e9027ecce9a6b026f528ea94d5c595694e423e1278ac4c0b56e8ffe76a
font_01_sfnt_off00005b5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B5F 10100 bytes
SHA-256: 070226c3aa5e3fe1e94f174e5b1c9e97f6458f0d09689cc908784736b84499d2