Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cfca9b5e5f824c9…

MALICIOUS

PDF

69.0 KB Created: 2021-02-15 13:47:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: af3a9a18491d71fd0c70f00656a4d4e4 SHA-1: 3e0fa8d2de5d1677f53aa50ab6e59799c0ed7b9b SHA-256: 4cfca9b5e5f824c9e21092086e46e993e573f4e3aa48a9adbe2db9751b4262ac
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://druttle.ru/wix?keyword=shark+vacuum+model+v1950+manual PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403806/normal_6010ab4af2664.pdfIn PDF document text
    • https://cdn.sqhk.co/jigavozef/djbNjcH/whispering_woods_middletown_de.pdfIn PDF document text
    • http://tugawuwumix.22web.org/jungling_guide_aov.pdfIn PDF document text
    • https://cdn.sqhk.co/numiwufeguv/gfgcjgp/eric_church_new_song_some_of_it_lyrics.pdfIn PDF document text
    • https://sulefufevonabu.weebly.com/uploads/1/3/4/3/134363738/mulujesejinumek_fudokike_gofid.pdfIn PDF document text
    • https://bevifosadorafot.weebly.com/uploads/1/3/1/8/131856546/1584867.pdfIn PDF document text
    • https://cdn.sqhk.co/zetanitanedo/9gchdih/vamugafugifiwisumewuw.pdfIn PDF document text
    • https://vaseviga.weebly.com/uploads/1/3/3/9/133986607/lefezur_ribogo_xijusimavex.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366304/normal_5ff9643e8f0bf.pdfIn PDF document text
    • https://zokesafan.weebly.com/uploads/1/3/0/7/130775675/1188163.pdfIn PDF document text
    • https://vuwuzujos.weebly.com/uploads/1/3/2/7/132712237/3126856.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477400/normal_60000061c28d1.pdfIn PDF document text
    • https://funopazotasar.weebly.com/uploads/1/3/1/0/131070342/cef06fafd4167.pdfIn PDF document text
    • https://rulorakaduf.weebly.com/uploads/1/3/4/4/134480735/d4fa5f950b1f0.pdfIn PDF document text
    • https://cdn.sqhk.co/vemegunir/ifBK5vd/cruise_lines._com_reviews.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://wufijuwodep.epizy.com/situpoluxanavoluk.pdfIn PDF document text
    • http://fapegilijaz.rf.gd/central_monitoring_station_cms_software.pdfIn PDF document text
    • http://sozogakuvigoxev.epizy.com/bootstrap_3_form_design.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c325.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC325 5456 bytes
SHA-256: 3af929759f9983908b4081d9d18f5415326c40a3198de77fdf046b00d4deb06e
font_01_sfnt_off0000d58c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD58C 10188 bytes
SHA-256: 3d0a163cfa4bd3d2e2bf30395b52319eed0abca0888ca8894a6fd2013a2732af
font_02_sfnt_off0000f85b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF85B 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3

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