Malicious PDF — malware analysis report

Static analysis result for SHA-256 7f7f21b58853fffb…

MALICIOUS

PDF

70.5 KB Created: 2021-03-04 10:02:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: a3ab0f6b8fd6b9ea99f2941a25a8ca6d SHA-1: 3417ee67434216babaa0c5c9854981110d91579e SHA-256: 7f7f21b58853fffb48a09796f5224568bf368e027817003eeb92487776671f06
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://lozipotod.ru/award?keyword=lego+ideas+book PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4476133/normal_5ffad2b62fade.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426425/normal_6011238d92296.pdfIn PDF document text
    • http://ranking-se.com/what_is_digital_media_simple_definitionzvlqg.pdfIn PDF document text
    • http://alex-chekalev.com/book_review_born_a_crime_trevor_noah2swyu.pdfIn PDF document text
    • http://avto-trokot.xyz/form_attribute_html5_buttonu40yf.pdfIn PDF document text
    • http://zekojotewakugag.mypressonline.com/who_is_the_strongest_deity.pdfIn PDF document text
    • http://laitlabs.pro/22920138293zgdbr.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4405194/normal_6014099a1a96e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478383/normal_5ff49dcf148a2.pdfIn PDF document text
    • http://mif-smeh.space/japejifojorelepidugevurfvs.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490720/normal_5ff0a31613312.pdfIn PDF document text
    • http://liketime.online/gta_san_online_android_2020wt2kg.pdfIn PDF document text
    • http://storeplus.pro/teamviewer_12_tamindirkem5g.pdfIn PDF document text
    • http://procripton.com/94933865036cr93i.pdfIn PDF document text
    • http://ca-manalapan.space/aprilaire_thermostat_8466_installation_manualurxvv.pdfIn PDF document text
    • http://1xbet-registr.site/najakolirufevoveliforagee759l.pdfIn PDF document text
    • http://my-favshopc.online/jegadukukifew35hi.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501794/normal_6036071509298.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000d65f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD65F 5012 bytes
SHA-256: 408d35fa4b5b29416e78363dbbf3f518e9877a2c5f2563c395209b07e09a4dbd
font_01_sfnt_off0000e783.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE783 10792 bytes
SHA-256: 4cf103cff51d5a669c44e2bb7e4656d768cf30cb94791cc08223321789c140ad