Malicious PDF — malware analysis report

Static analysis result for SHA-256 d99818e095410db3…

MALICIOUS

PDF

72.7 KB Created: 2021-03-10 19:27:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: cbe8aee2bc7ef94ff9c00b3ef673d18f SHA-1: 363f3967ebd9c23608e5b806453964f47fb3d8f0 SHA-256: d99818e095410db3aaea9690e91e463e1ae157301ebd006ce226eb49a1c2b3ec
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://baarspo.ru/award?keyword=bluewater+store+map+pdf PDF link annotation
    • http://zoosalon.org/why_does_the_density_of_solid_liquid_decreases_with_rise_in_temperature646ez.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471464/normal_601ba7f5d90e8.pdfIn PDF document text
    • https://cdn.sqhk.co/bulegumu/3CIhfzR/pobiluporupowetajozama.pdfIn PDF document text
    • http://watertea.space/the_giver_personalityjchp4.pdfIn PDF document text
    • http://intereriia.com/gecko_hot_tub_flo_errornetu7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4378175/normal_5fccff3e95d12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403404/normal_602fdf158bdad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494661/normal_603a290149e08.pdfIn PDF document text
    • http://vedice.ru/99050866305t268n.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459165/normal_60217d11b7586.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://91c7bc9f-df77-4dbd-ae51-8bcf521f3e61.filesusr.com/ugd/1df9ea_307eb457755046e190ff048a4772d2e9.pdf?index=trueIn PDF document text
    • https://a35b4eae-300a-44a5-b982-8d633984e519.filesusr.com/ugd/19735e_7090839ab81449eb8af00655ad46d983.pdf?index=trueIn PDF document text
    • https://7f06b679-e14d-4525-8955-d56a7cf6f710.filesusr.com/ugd/79e5df_21666c38b6d6430b9bae440ba160de7d.pdf?index=trueIn PDF document text
    • http://gefifeji.rf.gd/wapking_songs_a_to_z.pdfIn PDF document text
    • https://d5fb4b5d-766d-4e54-ab1c-ecc61d2b7d82.filesusr.com/ugd/b0c8dc_616d526cf1494aabb500701ce15f5b0c.pdf?index=trueIn PDF document text
    • http://jexunon.epizy.com/chemometrics_book.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_off0000e114.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE114 5328 bytes
SHA-256: be61cd429f6ac6233a47af56ba78b34759952c8e21f576137b82b5a9bec21828
font_01_sfnt_off0000f332.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF332 10172 bytes
SHA-256: deda48444e40243c03e26f146812204ede77d409db60009689110f7864be1030