Malicious PDF — malware analysis report

Static analysis result for SHA-256 340f791b5aad0346…

MALICIOUS

PDF

70.0 KB Created: 2020-10-26 22:43:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: d02b050d6b535c598810f5103b72c4bd SHA-1: d3ba78df44f22767dcb4ba64cd9aa3c504f6352b SHA-256: 340f791b5aad03465bb96458fa59a0299088d94ae1796b2961c0e8fe12271e22
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.link/pify?keyword=how+did+buddhism+spread+during+the+tang+dynasty In PDF document text
    • https://zalopajozi.weebly.com/uploads/1/3/1/4/131453352/lodeda.pdfIn PDF document text
    • https://bodadesoka.weebly.com/uploads/1/3/4/2/134234706/powimigasowo.pdfIn PDF document text
    • https://nobozufale.weebly.com/uploads/1/3/4/3/134322784/xumefumo_laxaxipi_minovazodekowi.pdfIn PDF document text
    • https://damuxuru.weebly.com/uploads/1/3/4/0/134040763/2899979.pdfIn PDF document text
    • https://dunujamovexen.weebly.com/uploads/1/3/4/3/134361976/e22bc.pdfIn PDF document text
    • https://jubozofarubowi.weebly.com/uploads/1/3/4/0/134095851/2927708.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/xizaxamuxive.pdfIn PDF document text
    • https://vakasuvarepem.weebly.com/uploads/1/3/4/3/134328097/zizutejurakun-jowotuxopilexez-vikazogibixarez.pdfIn PDF document text
    • https://podesasi.weebly.com/uploads/1/3/1/4/131437149/gosazowunumuviw_fatokiselipufe_xozezukojinetij.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366350/normal_5f8afcda545fc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420434/normal_5f96d9d2e6206.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370076/normal_5f9574498e794.pdfIn PDF document text
    • https://mabanopovofed.weebly.com/uploads/1/3/1/4/131453130/f26382ce38bd1.pdfIn PDF document text
    • https://niparazuxadema.weebly.com/uploads/1/3/4/0/134040736/soveniwurosujef.pdfIn PDF document text
    • https://baletepo.weebly.com/uploads/1/3/0/7/130776023/tegizufibu_miwub_dekuseni.pdfIn PDF document text
    • https://sixonawujow.weebly.com/uploads/1/3/4/3/134369174/kavaluzevaxigub_niluvowike_lagemowaj_gixesi.pdfIn PDF document text
    • https://porelananov.weebly.com/uploads/1/3/0/7/130775759/mejisasemexa_mexidixuxoguri_pomadito.pdfIn PDF document text
    • https://bizitodavil.weebly.com/uploads/1/3/4/3/134321392/nebegawete.pdfIn PDF document text
    • https://ditutemisa.weebly.com/uploads/1/3/4/3/134381329/jotogiburekojupiwoti.pdfIn PDF document text
    • https://rafunukogavukuj.weebly.com/uploads/1/3/3/9/133999746/jofevusawez_kexokotabisi_nidigexuzi_govikazapeze.pdfIn PDF document text
    • https://jomunibudax.weebly.com/uploads/1/3/4/3/134342604/pisow.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000ce65.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000ce65.bin)
    • https://s3.amazonaws.com/minaxigevani/rapidex_english_speaking_course_in_hindi_download.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/medea_euripides_deutsch.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/22068043363.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://afe.easia.columbia.eduIn 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 extracted file (font_00_sfnt_off0000ce65.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ce65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE65 5636 bytes
SHA-256: 8b35c73ca7ec9d6e97c1a3e8f6334c87ba2dc74fe28d9a3bc4828b2b431cb268
font_01_sfnt_off0000e173.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE173 11536 bytes
SHA-256: 005f288ce08fdc9dbdf7a34543b7cb68447ad204720f2067ca5111167ddbea43