Malicious PDF — malware analysis report

Static analysis result for SHA-256 503cbfaf78d9c557…

MALICIOUS

PDF

71.1 KB Created: 2021-02-14 00:38:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 608ba9cc954e5f0b078783d4c624c44f SHA-1: 47d6e8f543a9a497fb3f59a9cbad6d5ad4d1c5c4 SHA-256: 503cbfaf78d9c5571d93c1c27c6feb910be4ad7a7fb69889ae38492a7b9bcbfe
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://bologen.ru/wix?keyword=escape+the+car+walkthrough PDF link annotation
    • http://shoplus.info/avatar_creator_full_body_freevvacb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365639/normal_5fefa7a527446.pdfIn PDF document text
    • http://sberin.xyz/the_secret_byron_preiss_imageszk8hc.pdfIn PDF document text
    • http://dalkomis.website/spoken_english_course_appxhbws.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374968/normal_60151e6caa568.pdfIn PDF document text
    • http://wejnpowk.space/gadgil_report_summary_in_malayalamsif91.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410988/normal_5fec5dbfd1570.pdfIn PDF document text
    • http://timogefubor.22web.org/59407475565.pdfIn PDF document text
    • http://probmaka.tech/soma_dolara_pescenica_tekst_piosenkin3wis.pdfIn PDF document text
    • http://nncucuucuc.space/160844152408ep98.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465537/normal_5fc5ba0c4937f.pdfIn PDF document text
    • http://soldatskaya6.ru/27411112067ckmtz.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
    • https://s3.amazonaws.com/taturi/alcatraz_prison_guard_uniform.pdfIn PDF document text
    • https://s3.amazonaws.com/besafefaf/civil_rights_training_answers_texas.pdfIn PDF document text
    • https://s3.amazonaws.com/tojazudibumogab/gevegojivibo.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_off0000cd65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD65 5036 bytes
SHA-256: 90ff7a7a114f13db20a60e25aeb23eb09cc609c694e0a633d9d46f328a58edf9
font_01_sfnt_off0000deb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEB1 10092 bytes
SHA-256: 23755da65aba5d5f7e55bb5d28644dc6ba970fd198ac0731ed15ed8378e9e106
font_02_sfnt_off00010148.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10148 4324 bytes
SHA-256: 1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e