Malicious PDF — malware analysis report

Static analysis result for SHA-256 0cf64d0922c094a6…

MALICIOUS

PDF

72.8 KB Created: 2021-03-07 15:12:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 2e53539380ae66304fe0b632118ba51e SHA-1: f21716c384c2e8f5057e54cd3a4833691ee990b3 SHA-256: 0cf64d0922c094a66c06ac8f018d0835978b05b6e8d900bf0160741ee847f0a1
186 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
  • 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.
  • 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=electrical+engineering+internship+melbourne PDF link annotation
    • http://theandyhong.com/schleich_horse_collectors_guide9jv0s.pdfIn PDF document text
    • http://fobativ.mywebcommunity.org/zasetugexetawak.pdfIn PDF document text
    • https://nezuzubes.weebly.com/uploads/1/3/5/3/135327702/bataxoberoburafi.pdfIn PDF document text
    • http://asta-stroy.ru/black_and_decker_toaster_oven_crumb_tray_replacementb8rn0.pdfIn PDF document text
    • http://zunololanuxigu.sportsontheweb.net/engineering_drawing_sectional_views.pdfIn PDF document text
    • http://vonokumi.iblogger.org/formation_alternance_ressources_humaines_lyon.pdfIn PDF document text
    • http://fabulouss.space/health_and_safety_jobs_london_ukta6oh.pdfIn PDF document text
    • http://tikopariwoxa.mygamesonline.org/65360846759.pdfIn PDF document text
    • https://roxejozojone.weebly.com/uploads/1/3/0/9/130969259/6023650.pdfIn PDF document text
    • http://knitfqph.site/78969375961pmpof.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pomigijo.rf.gd/2013_dodge_avenger_shifting_problems.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3cc94cb-6750-4299-801b-857c34b15bb2/bewetumizulifapokezedidog.pdfIn PDF document text
    • http://nobajupotikude.rf.gd/15789130717.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c9a4ad4d-1118-4394-a760-1b06c7a754af/vabalugitipokusowuluze.pdfIn PDF document text
    • http://nemowuroniru.epizy.com/miforula.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d77a0153-80f2-4c42-aa5e-765df3c969f0/derewenatoj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3b1d99f-1524-43a6-9eba-cc6551732879/dolarireviniwob.pdfIn PDF document text
    • http://wasutin.epizy.com/fire_risk_assessment_form.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e1060033-e91f-431f-b12e-b7833bf700c8/9417919337.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_off0000e0e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0E3 5444 bytes
SHA-256: ba64a23f525394355880f7cefccbb14268bf29ce7be65874d148f64c086cfe25
font_01_sfnt_off0000f33c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF33C 10164 bytes
SHA-256: 55bd1261205f7a8e9592a58a942301138f295458f522d37474b9d1a95a0e6249

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