Malicious PDF — malware analysis report

Static analysis result for SHA-256 d355346a489596ee…

MALICIOUS

PDF

76.4 KB Created: 2021-02-26 01:26:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: b9ac9bc5f78307bfbe204814ab2b7409 SHA-1: 2bb661379431d2e8654561f983aee8f1c3a64b1b SHA-256: d355346a489596ee5c3f81234a10c5e0ef87e5451367685e3883b3e92bc03167
184 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
  • 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://crophysi.ru/123?utm_term=easy+touch+lancet+device+compatibility In PDF document text
    • http://lienforkid.com/graphic_design_portfolio_template_indesignq8net.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426814/normal_602f760dbf848.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409244/normal_6009b76d3c644.pdfIn PDF document text
    • http://brandframeb.com/terevpa33a.pdfIn PDF document text
    • http://verefdliyvtorogo.xyz/gebobisemejadotiwibofymf6z.pdfIn PDF document text
    • http://help-bluebadgecenter.com/baby_g_watches_black_friday_salenyn87.pdfIn PDF document text
    • http://euromarket.pro/what_words_rhyme_with_57w08z4.pdfIn PDF document text
    • http://aazzzry.space/tamil_catholic_bible_download2v8q6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454046/normal_5fe45db5e1202.pdfIn PDF document text
    • http://sdfsdfsdf.shaketorch.com/ruxisedezimaxovujalen.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pulawev.epizy.com/vasawo.pdfIn PDF document text
    • http://pajuzipoxebemo.rf.gd/fofotugafonike.pdfIn PDF document text
    • http://jabujiwotase.epizy.com/installation_guide_sap_business_objects_4._2.pdfIn PDF document text
    • https://s3.amazonaws.com/xelimewat/forms_of_address_in_spanish_formal.pdfIn PDF document text
    • https://s3.amazonaws.com/wizuluworafid/flydubai_crash_investigation_report.pdfIn PDF document text
    • http://ledolabufimo.epizy.com/24606200885.pdfIn PDF document text
    • http://wolobugoxew.myartsonline.com/30602981889.pdfIn PDF document text
    • https://s3.amazonaws.com/wozowuledij/93104724614.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_off0000eb33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEB33 5476 bytes
SHA-256: a9e703d5babebd30c38c2fe1877ad372d11b2c486c8bd03a259fd67481c8d488
font_01_sfnt_off0000fdb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDB4 11392 bytes
SHA-256: f0aa0119d67b3f05dbeebc2549cdd59d59e233cd7db4c2d1e2fcd728c95da66a