Malicious PDF — malware analysis report

Static analysis result for SHA-256 0477332b08897c80…

MALICIOUS

PDF

67.3 KB Created: 2021-03-01 21:01:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 4b79abcd88858691e7389aa9e9377fa3 SHA-1: b1c49afa8874dd081da79a421a6dc904a583902d SHA-256: 0477332b08897c802852099db7eb8c09a82c8923d37d47c71208a9557a95a73d
184 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
  • 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.
  • 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.
  • 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://dafemum.ru/wix?keyword=foodland+priceville+al+hours In PDF document text
    • https://cdn-cms.f-static.net/uploads/4490122/normal_603354aba7ddd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449614/normal_5fd6665457a2e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451039/normal_60353dee575d5.pdfIn PDF document text
    • https://cdn.sqhk.co/vunalogivefu/aWhcv8G/8164065545.pdfIn PDF document text
    • http://kudretbozaci.com/what_did_federalist_70_sayhllba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464313/normal_6029ac1998b1f.pdfIn PDF document text
    • http://freds.space/vijubulefoxena9te2u.pdfIn PDF document text
    • http://giocodigital.website/kit_audax_3_voiesk24xx.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4373259/normal_5fe221c8c78ff.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368971/normal_60068d980b989.pdfIn PDF document text
    • http://molotkov.site/guidewire_testing_tutorialhdhbt.pdfIn PDF document text
    • https://cdn.sqhk.co/wamamuli/ijjeiRg/tamilrockers_hd_movies_2019_free_download_720p.pdfIn PDF document text
    • http://ipatovaalena.ru/vodagemipupavolifusuvatog3knn6.pdfIn PDF document text
    • http://aov.one/jiwutupowebakeda0imv3.pdfIn PDF document text
    • http://lnstagram-blue-badge-form.com/dupexizixigiran9akks.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503524/normal_6004e09dec74f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489717/normal_5fda3456a67ae.pdfIn PDF document text
    • https://cdn.sqhk.co/sowanigog/jfIEfb8/sabado_gigante_cast_la_cuatro.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_off0000cb9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB9A 5176 bytes
SHA-256: 587c4925c2cb1c1e1af374a18b4bbca31f07a7e33f909ed8cb13a1a1dc47b204
font_01_sfnt_off0000dd39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD39 10184 bytes
SHA-256: 6d7845cacc98c3804b3f5c6e7a4d18f2ccece51dd76a4b3296c68004926b8341

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