Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d55f24f99e85237…

MALICIOUS

PDF

64.9 KB Created: 2021-02-15 22:11:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9d858354467b3ebafdf11de40e01fc23 SHA-1: 457b0027d5262fed9ec3ce8fa3aff88a8e6d3786 SHA-256: 3d55f24f99e85237c5aece6c900deb348ba53bbd42f36e92b87a784613f30de4
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://bologen.ru/wix?keyword=shimano+nexus+7+speed+service+manual+pdf PDF link annotation
    • https://nitiruminaxodax.weebly.com/uploads/1/3/0/7/130738633/4525090.pdfIn PDF document text
    • https://cdn.sqhk.co/guzamuvi/drvij8R/skycraft_minecraft_unblocked.pdfIn PDF document text
    • http://sarhello.online/12071702152f8rea.pdfIn PDF document text
    • https://jonurimexiv.weebly.com/uploads/1/3/4/3/134321783/jikido.pdfIn PDF document text
    • https://wepebajaka.weebly.com/uploads/1/3/4/5/134588919/55c74597db9d.pdfIn PDF document text
    • https://mupexopuwes.weebly.com/uploads/1/3/4/7/134722910/ddf61d0284064fe.pdfIn PDF document text
    • https://cdn.sqhk.co/wifenepomojo/yjiZgcR/gunship_battle_helicopter_3d_apk_mod.pdfIn PDF document text
    • https://zadopelujon.weebly.com/uploads/1/3/4/8/134884154/9383067.pdfIn PDF document text
    • http://bluhgang.best/cloud_atlas_sextet_piano_sheet_music6bizj.pdfIn PDF document text
    • https://cdn.sqhk.co/kegufamop/Zs5Giiu/lifuxizekesusuviz.pdfIn PDF document text
    • http://anbieterbewertung-autoscoutch.com/16797087674dkkxo.pdfIn PDF document text
    • https://fuvepuzineg.weebly.com/uploads/1/3/4/4/134463404/9615907.pdfIn PDF document text
    • https://norusukesalija.weebly.com/uploads/1/3/4/3/134356509/tuzesopalarebuxoxuje.pdfIn PDF document text
    • http://creditscorerepair.info/atomic_structurem0qtp.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_off0000c034.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC034 5704 bytes
SHA-256: ebae0a843fe78e6d5900c3e72da614890aabcd063cf2f9eb91e86e803b19fee5
font_01_sfnt_off0000d37e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD37E 10388 bytes
SHA-256: 07979f40a49cd72098232bfdca6199762337056834a1cac01e1ff62307153fca