Malicious PDF — malware analysis report

Static analysis result for SHA-256 d8f57a07867b19a6…

MALICIOUS

PDF

87.5 KB Created: 2021-05-16 22:33:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 7c659b452c6b7f932f8b0e8a1ac6097d SHA-1: 54a10fe2e80589272b80533e7c37c662474222ab SHA-256: d8f57a07867b19a64dca8c1ea2ab2d365f1f92091a91bd62c9fb79430a665854
246 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document was detected as malicious by ML classifiers and ClamAV, and exhibits characteristics of a credential phishing campaign. It impersonates the Disney brand and contains numerous links, including one pointing to a redirector that likely leads to a phishing page. The document's structure suggests it's part of a link farm designed to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 7

  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://latitatuforuza.weebly.com/uploads/1/3/1/3/131398212/fda8cfb84.pdf.
  • 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://dugedepap.ru/strik?utm_term=how+to+remove+automatic+page+breaks+excel PDF link annotation
    • https://latitatuforuza.weebly.com/uploads/1/3/1/3/131398212/fda8cfb84.pdfIn PDF document text
    • https://debagodijif.weebly.com/uploads/1/3/0/9/130969595/1543720.pdfIn PDF document text
    • https://tawozajoruje.weebly.com/uploads/1/3/4/3/134314125/vojezofulowud.pdfIn PDF document text
    • https://nakojuxipesasam.weebly.com/uploads/1/3/0/7/130776326/rebigazuzavajugej.pdfIn PDF document text
    • https://budigalaxob.weebly.com/uploads/1/3/5/3/135313384/zotolo.pdfIn PDF document text
    • https://cdn.sqhk.co/rivinodati/cd9bbjb/54341875420.pdfIn PDF document text
    • https://cdn.sqhk.co/xaranoraf/icEgghh/car_crash_hunts_cross_liverpool.pdfIn PDF document text
    • https://cdn.sqhk.co/busanurutar/fghicjh/58663209004.pdfIn PDF document text
    • https://desujerobum.weebly.com/uploads/1/3/1/0/131070458/warasafixite_tejofivuwibivu.pdfIn PDF document text
    • https://zeberafuduzugag.weebly.com/uploads/1/3/2/6/132682167/3514882.pdfIn PDF document text
    • https://wopeduvolevim.weebly.com/uploads/1/3/0/7/130776212/9458069.pdfIn PDF document text
    • https://puvebimu.weebly.com/uploads/1/3/4/3/134311544/874684.pdfIn PDF document text
    • https://cdn.sqhk.co/lupobikud/ifGzYjh/strike_hero_fighter_mod_apk.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://f9a132f0-acc9-4761-b7d8-38025aedd849.filesusr.com/ugd/5c71d6_f53ab046e4324144a1c160c166e76b61.pdf?index=trueIn PDF document text
    • https://a2876ee3-c470-454a-91e2-e108d831033a.filesusr.com/ugd/e8dba5_b35b5c50ac2e4f4390d79ab31cd455ce.pdf?index=trueIn PDF document text
    • http://sorijuri.rf.gd/feguzoxozepekisifibabizib.pdfIn PDF document text
    • http://saxizezubunana.rf.gd/sedasuzul.pdfIn PDF document text
    • https://4de1274e-a26b-4e71-a0d1-d86f0cfee7ee.filesusr.com/ugd/ee4d88_a7b8e92713cc4a73b8bcb6b8e29f9af6.pdf?index=trueIn PDF document text
    • http://maderenefozido.rf.gd/jisulexu.pdfIn PDF document text
    • https://0eaabcdb-938a-45a6-85a3-1a7d796bbcdd.filesusr.com/ugd/8d6d25_6b81a91921384f3daefd1dcaaedbcb5c.pdf?index=trueIn PDF document text
    • http://pewulalabes.epizy.com/black_and_decker_corded_electric_lawn_mower_manual.pdfIn PDF document text
    • https://f499a9ea-5579-4d3c-a180-ba191067f9b7.filesusr.com/ugd/34ec99_b8aadb33aeff47fa870e8393a3912ad7.pdf?index=trueIn 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_off00011617.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11617 5636 bytes
SHA-256: fd02e6048d612bb6225d509931666e14bea177a91fc65319be951f7891fc80ab
font_01_sfnt_off00012944.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12944 11688 bytes
SHA-256: cd3e8ac4902065f4c93b06afebaa9492f9e2e0bff62cd6c0cefdbb9d340d9706

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