Malicious PDF — malware analysis report

Static analysis result for SHA-256 583bc834355e39aa…

MALICIOUS

PDF

70.1 KB Created: 2021-02-16 12:05:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 37053e2489a67e99920e52c9b6fce628 SHA-1: a85fb3e8e1e958bd2807e7102e23cbb57edc7748 SHA-256: 583bc834355e39aa88415f87abad305bab5341f451e7f0257b7a4219e8d3a876
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://jottigo.ru/wix?keyword=nitro+type+hacks+money+2020 PDF link annotation
    • http://classkaod.ru/33650978271ttiyb.pdfIn PDF document text
    • https://vasinurevesodux.weebly.com/uploads/1/3/4/6/134605286/buzub-bolitupu-tidebezovorapez.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4447912/normal_5fec30e790ecd.pdfIn PDF document text
    • https://fuxilidunud.weebly.com/uploads/1/3/5/3/135314653/286c1.pdfIn PDF document text
    • http://sarhello.online/chevy_van_club_finlandeijot.pdfIn PDF document text
    • http://dagomakiluje.iblogger.org/nifakeriserawopo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4422877/normal_60209f16e0f1a.pdfIn PDF document text
    • https://mofibowego.weebly.com/uploads/1/3/1/4/131406437/6224916.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451752/normal_5ffb62d170886.pdfIn PDF document text
    • http://ximuvitu.iblogger.org/48324977128.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4494668/normal_5ffece29c2644.pdfIn PDF document text
    • https://pufedoxavode.weebly.com/uploads/1/3/4/6/134613169/welelarik-xiranenamopuvi-rebemafikobiw.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373527/normal_5fcaa617d0b38.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453333/normal_6010cba94ba5e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kazaxese.epizy.com/nekijatimevowu.pdfIn PDF document text
    • http://zuvetimimu.rf.gd/litonademaduletoz.pdfIn PDF document text
    • http://febuner.epizy.com/american_gerbil_society_care_guide.pdfIn PDF document text
    • http://fodapimogu.rf.gd/fiwixajegezowu.pdfIn PDF document text
    • http://mosepurone.epizy.com/sakhi_movie_song_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_off0000d5fb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD5FB 5548 bytes
SHA-256: 2c36d0472d30362fc2e526823c9207cfe59d89d820a87542f6e94c802541ab44
font_01_sfnt_off0000e8bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8BF 10032 bytes
SHA-256: f096e11c19596c8b0cca37bd54c5e0e3dea9bd510967a42f7461ed8b4310d08d