Malicious PDF — malware analysis report

Static analysis result for SHA-256 cb6beff6c69a1176…

MALICIOUS

PDF

72.2 KB Created: 2021-01-21 21:02:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-16
MD5: b3e189316f3bee37f49d6eda09a7adac SHA-1: 232724cc644d236b6847bb69732bff570d5cb1ef SHA-256: cb6beff6c69a117601aafd8b8c3a977e5102e5e000e73dd6e1661f6c29a47771
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to exploit vulnerabilities or trick users into visiting a malicious URL, fitting the profile of a phishing or malware delivery document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://traffnew.ru/123?utm_term=trash+can+shed+wood PDF link annotation
    • http://xonibiz.22web.org/glomerulonephritis_treatment_guidelines.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415934/normal_5ff29f1ead3eb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4419626/normal_5fcf7443d5bb0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486987/normal_60079ce0c44f2.pdfIn PDF document text
    • https://site-1166625.mozfiles.com/files/1166625/download_cc_cc_apk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369626/normal_5fe8f7eab6328.pdfIn PDF document text
    • http://jaraxusej.iblogger.org/bhalwan_singh_movie_song.pdfIn PDF document text
    • https://site-1175189.mozfiles.com/files/1175189/31268100469.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370778/normal_5fddb93f2d4e5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404740/normal_5ff3d591529f0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459185/normal_6000401792980.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4375699/normal_5fc5e696da66e.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/veledabejufi/exercicios_de_administrao_publica_para_concursos.pdfIn PDF document text
    • https://s3.amazonaws.com/napoledunadigo/vewulonabenenujab.pdfIn PDF document text
    • http://rigirulame.epizy.com/97602790200.pdfIn PDF document text
    • http://fedukiz.epizy.com/chuck_season_1-_5.pdfIn PDF document text
    • https://s3.amazonaws.com/xufujofaleki/chernobyl_hbo_1080p.pdfIn PDF document text
    • http://renaxodemebi.rf.gd/2622794961.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000dd4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD4F 5036 bytes
SHA-256: 2d359da450d87d73e816af1043e2c5da775116222297f7a953948776bfed8de7
font_01_sfnt_off0000ee76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE76 11044 bytes
SHA-256: 5ad8f47f318d8b3908c65e230509f9e4ec9211369f78a2c9bd43750d2e559675

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