Malicious PDF — malware analysis report

Static analysis result for SHA-256 15c6af587055a870…

MALICIOUS

PDF

68.8 KB Created: 2021-03-03 17:32:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 15a5e443a237870fef39999388df67fe SHA-1: 0e3ae3911883b678ab4b28034fa117ae2aa7b95f SHA-256: 15c6af587055a87088e603c4fe2a48ea11234c8928d4c0ab192616a453db3056
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://druttle.ru/wix?keyword=vocab+level+f+unit+4-6+review+answers PDF link annotation
    • https://valojeruxul.weebly.com/uploads/1/3/4/6/134681631/65efac.pdfIn PDF document text
    • https://cdn.sqhk.co/gunonutib/hg4Ojbf/viviwumofagusupudu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4479684/normal_60118bcee3855.pdfIn PDF document text
    • https://zizovelet.weebly.com/uploads/1/3/1/3/131380569/2bbb56.pdfIn PDF document text
    • http://tagaporigowekis.mygamesonline.org/the_secret_life_of_pets_full_movie_in_hindi_youtube.pdfIn PDF document text
    • https://razivizufizide.weebly.com/uploads/1/3/4/5/134525322/f6f60ba.pdfIn PDF document text
    • http://liwurivosopap.medianewsonline.com/la_historia_del_caballo_de_troya_resumen.pdfIn PDF document text
    • http://valuburikodajad.medianewsonline.com/why_is_my_babys_sleep_disturbed.pdfIn PDF document text
    • http://totaxusozavu.sportsontheweb.net/85815475340.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4480393/normal_5fd824fc5ee76.pdfIn PDF document text
    • https://cdn.sqhk.co/woxekivepi/ejCohbj/water_slide_in_palm_beach.pdfIn PDF document text
    • http://kigirifaduguv.getenjoyment.net/zokanodijaxotobupuwexi.pdfIn PDF document text
    • https://pesuwoleze.weebly.com/uploads/1/3/5/2/135295903/0f4f95f45.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tuzuxutetug.atwebpages.com/nofatusiwedipikesilepakep.pdfIn PDF document text
    • http://jatoxat.atwebpages.com/jifazajaxanikab.pdfIn PDF document text
    • http://vilepobafomunow.atwebpages.com/54755595156.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_off0000cf82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF82 5408 bytes
SHA-256: 68ebc6464750a1b8c4f8aafec665a78f432c542e873410ccb30752a6eadaf816
font_01_sfnt_off0000e21d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE21D 10776 bytes
SHA-256: ea88dcd0f29f8c62cbd32048d6e59aebf211dba10a4f6199b5bbbb5d64c980cc