Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e203b0adef9cedc…

MALICIOUS

PDF

43.9 KB Created: 2020-11-07 16:29:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3fc173e054e4b69fea9f23b5d31a643b SHA-1: 6083c07472298e278fa6d087f59c72bb33048e83 SHA-256: 9e203b0adef9cedc1851e36b668f5f2f01e9c5280276eb27ee23788740f85255
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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=g+final+words+speech+therapy In PDF document text
    • https://wejapofi.weebly.com/uploads/1/3/4/5/134590092/fotefetotede-mipiw-pukemafen-nefonedor.pdfIn PDF document text
    • https://fejovixojik.weebly.com/uploads/1/3/4/3/134333762/1866151.pdfIn PDF document text
    • https://wopedibim.weebly.com/uploads/1/3/4/5/134585971/zozurod_pelubosobebifo.pdfIn PDF document text
    • https://xazojitov.weebly.com/uploads/1/3/1/4/131408465/d49d6b.pdfIn PDF document text
    • https://vuzevarezevarot.weebly.com/uploads/1/3/0/7/130740461/2244882.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/tesasubawalozan/watch_sausage_party_online_fmovies.pdfIn PDF document text
    • https://jatanoteje.files.wordpress.com/2020/11/17161008602.pdfIn PDF document text
    • https://s3.amazonaws.com/jefobexapulow/84609182062.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ba375843-d0d5-4f9e-9ecd-36ad0b93e51c/fedawavudoxax.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fced8941-ed2c-437e-8f33-70948b2b1b81/badiwomola.pdfIn PDF document text
    • https://tiveboxol.files.wordpress.com/2020/11/ladki_beautiful_kar_gayi_chull_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_off00006bdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6BDC 5468 bytes
SHA-256: b75afc32843a6039d2c54f67240ee2d498a9cec8fe7f7cc0d4b4a310388f01f4
font_01_sfnt_off00007e8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E8F 10560 bytes
SHA-256: 7da50c7bf1b21c9e9441e4af221983d198d8a88a0c7f0c1590d35812dabc56af