Malicious PDF — malware analysis report

Static analysis result for SHA-256 02ac37d16466543e…

MALICIOUS

PDF

69.6 KB Created: 2020-10-28 22:09:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 45d1923156e93b7369bbef9466f1cd58 SHA-1: 07cdd69af8b1ed1ca8e89e4fe221fe531312b531 SHA-256: 02ac37d16466543e7b5f130d46901902f26992ab11f6be8d1c66e31314f408ee
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://ttraff.me/pify?keyword=how+to+use+accounting+tape+calculator In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379498/normal_5f8b5127b70f8.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/tugunari_fogeze_nezejavoz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383137/normal_5f9522e8392df.pdfIn PDF document text
    • https://podesasi.weebly.com/uploads/1/3/1/4/131437149/d129e677dc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393018/normal_5f92076adf563.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366028/normal_5f949419471d8.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/filosom-lusiwikafese-jerupuxorukoti-novubolifunuw.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000d10d.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000d10d.bin)
    • https://uploads.strikinglycdn.com/files/5f092de6-5ad7-4270-be93-732c3664b9cc/addams_family_musical_conductor_score.pdfIn PDF document text
    • https://s3.amazonaws.com/zomuzigo/16611565258.pdfIn PDF document text
    • https://s3.amazonaws.com/mefadedosuw/55478343778.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/76ea91ec-925d-409e-bfd6-5d4473157f5a/yo_despues_de_ti_pelicula_completa.pdfIn PDF document text
    • https://s3.amazonaws.com/luxelula/agilent_34401a_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/xabalaru/vasigo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/06726549-028d-4dae-acb9-f29bd4eab88e/13461615560.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7b5a83b2-74ef-41aa-82ea-db1e54e8c6d0/71738274539.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7f7c252f-43e8-46b0-bb09-26464eb95f46/autocad_electrical_tutorial.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 extracted file (font_00_sfnt_off0000d10d.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d10d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD10D 5156 bytes
SHA-256: 9fb78a855209e3bdbecbcdfc6c374bb63537f00f6abf8b37afc1cc234deccc00
font_01_sfnt_off0000e2b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2B8 11236 bytes
SHA-256: 86edeb36f2149374591d68c3892f1f96d3294a2f615f30b84e5b4c3c69379425