Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca3706dcfeac7a3b…

MALICIOUS

PDF

63.4 KB Created: 2021-02-21 04:55:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 8b5940643deb7eedac9a4b5a9835733f SHA-1: 4d03d333d821fc70bba09f279fa0e27305ba69b7 SHA-256: ca3706dcfeac7a3b88116d3ce7fd820b15becf61998001478d086205ecf5847e
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/aws?utm_term=32+inch+roku+smart+tv+price PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4489983/normal_60257aa12b561.pdfIn PDF document text
    • http://afracheat3.xyz/63564709457hl6sy.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481271/normal_5fe963c11d945.pdfIn PDF document text
    • http://copyright-services-us.com/seagate_pipeline_hd_2_500gbe9d40.pdfIn PDF document text
    • http://mbfsopg.com/clinical_pharmacology_and_therapeutics_mcq3wsfo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416331/normal_6021c0c2828e2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382631/normal_5ff4e30fb3094.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466391/normal_6012ddfc29483.pdfIn PDF document text
    • http://in-arenas.com/wow_wotlk_blacksmithing_guidevdxtz.pdfIn PDF document text
    • http://stopro.store/12534938802jenci.pdfIn PDF document text
    • http://ru-order-687646765445.art/adobe_flash_player_11._11_freekqzcp.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tanikanaw/drastic_emulator_free_apkpure.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/19742482979.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/film_coraline_sub_indonesia.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/cebu_tourist_map.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_off0000bbbf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBBBF 5468 bytes
SHA-256: abd9830ff93c84033488698d2508a1516b6e852543780fc77f7d29dd236643c3
font_01_sfnt_off0000ce2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE2E 10208 bytes
SHA-256: c0198ada16c737ae339444477efdb826f6457c27054a51102cda3f92c4c7ccc3