Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee9ca748b98a7bea…

MALICIOUS

PDF

74.9 KB Created: 2021-03-20 19:56:23 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-08-20
MD5: 0b04eff79ce92208171ddeb1bc1b13ae SHA-1: b54c70da886ff1e420e5633c655c75a279f35947 SHA-256: ee9ca748b98a7bea566c077327a30888b83949bcfbbf26f7db840d7afeb5b190
186 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains a large number of external links, many hosted on disposable domains, indicating a link farm or SEO manipulation tactic. ClamAV and ML classifiers strongly indicate maliciousness, specifically a phishing or trojan payload. While no scripts were directly extracted, the PDF structure and link farm suggest it's designed to redirect users to malicious sites, potentially for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://botokaw.ru/123?utm_term=bhairava+dweepam+songs++com PDF link annotation
    • https://wilumixomili.weebly.com/uploads/1/3/1/4/131483065/tazazigiwepedelefube.pdfIn PDF document text
    • https://viferoxabuged.weebly.com/uploads/1/3/4/2/134235394/1928444.pdfIn PDF document text
    • https://lupolaluxu.weebly.com/uploads/1/3/2/6/132681144/neduxamivukunudutap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4458614/normal_5fd10d51ed23f.pdfIn PDF document text
    • http://bilomibedaralo.iblogger.org/chemical_admixtures.pdfIn PDF document text
    • http://tijudiwulewanuw.getenjoyment.net/when_should_you_yield_the_right_of_way.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4382614/normal_5ff6b4f19047a.pdfIn PDF document text
    • https://malolikekex.weebly.com/uploads/1/3/4/7/134718462/7567319be.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4415055/normal_6041ee78b73b0.pdfIn PDF document text
    • https://lebetazukuz.weebly.com/uploads/1/3/1/6/131606644/1880177.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3488e509-559a-424c-9adb-0fefa5427910/vocabulary_from_classical_roots_5.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/755e6df2-e619-42d3-abd3-cea7c91d7319/vupuwafe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c6481c7b-ebc1-4484-85ad-c032cc7cffd9/50730665561.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3e8db277-4dee-4b94-be3c-a60772863946/who_makes_the_best_infrared_heater.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0eebde03-d344-44a8-bfde-e86a7293fd35/28926883077.pdfIn PDF document text
    • http://dapilejebuvone.atwebpages.com/88139910082.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/39782964-872b-4101-b2b2-c988b8c02e31/tibumu.pdfIn PDF document text
    • http://pakuzubexur.rf.gd/daxelezusob.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_off0000e76d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE76D 5656 bytes
SHA-256: 490041ebb15db4a0084a3ff01242e946e07243fff97182437757c2f03934f849
font_01_sfnt_off0000fa99.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA99 10380 bytes
SHA-256: f11d6cef123193d0267e1787a6bb17df97c9f9d116cace23cb3f1fafc65fb947

Open this report in the interactive analyzer, or submit your own file for analysis.