Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d794db052f66445…

MALICIOUS

PDF

80.3 KB Created: 2021-04-05 01:02:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: aff7d0333f2cbfd28d7960fd863aa29a SHA-1: 02449afdc0ee3fde9aae0f94cbcfa3d21c8af55d SHA-256: 7d794db052f664450ebb32a1a925f4260f0fec5a44b68c87c5f556ff71cb3147
244 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, many pointing to disposable hosting or known redirectors, indicating a link farm designed to distribute traffic to potentially malicious sites. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery. No scripts were extracted, but the structure and URL analysis point to a malicious document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • 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 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.
  • 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/award?keyword=applied+linguistics+pdf+free+download In PDF document text
    • https://lawepisofav.weebly.com/uploads/1/3/4/4/134473025/bisamumezanege.pdfIn PDF document text
    • https://bejetatibuket.weebly.com/uploads/1/3/5/9/135957672/pekigabog.pdfIn PDF document text
    • http://pokafusolitix.iblogger.org/apartment_lease_contract.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497697/normal_600477fe1e528.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4501486/normal_604336a3bea9a.pdfIn PDF document text
    • https://merirano.weebly.com/uploads/1/3/2/7/132710628/dunolemituduruwem.pdfIn PDF document text
    • https://xudufuzed.weebly.com/uploads/1/3/0/8/130815664/c7d7ecc0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416932/normal_60432652b19ed.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388814/normal_6062eed1253a7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420939/normal_6064e19a010c9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420764/normal_600179aff1605.pdfIn PDF document text
    • https://petavigavixate.weebly.com/uploads/1/3/4/4/134459614/63803510c5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453734/normal_600a642820e27.pdfIn PDF document text
    • https://wevapagavum.weebly.com/uploads/1/3/4/3/134306171/waxiletefejem-rudelir-vuxizug-pezumoxozeruda.pdfIn PDF document text
    • https://gatepeduvemixif.weebly.com/uploads/1/3/4/6/134669895/7029731.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470968/normal_6022b988e70f8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://toxisokipefofo.epizy.com/raid_shadow_legends_guide_first_champion.pdfIn PDF document text
    • http://domumulavonevef.rf.gd/zarogaxekav.pdfIn PDF document text
    • https://64e18f06-8a0e-4dc1-8427-9dd81b4bff36.filesusr.com/ugd/baa514_aec06d69a0204782a421e316a3974832.pdf?index=trueIn PDF document text
    • http://vixabewe.rf.gd/distance_on_coordinate_plane_worksheet_6th_grade.pdfIn PDF document text
    • https://7f06b679-e14d-4525-8955-d56a7cf6f710.filesusr.com/ugd/79e5df_a8ef719dd6e94afe89e11319e4ffdb8a.pdf?index=trueIn PDF document text
    • https://587b455d-cc79-4428-8e80-a8b75ce23bca.filesusr.com/ugd/021ec8_4e2c0ee51bfe4059a355bf032f672946.pdf?index=trueIn PDF document text
    • https://4ad55601-b8ab-4ae0-bc0e-e90069072326.filesusr.com/ugd/3aca14_8e7f849f7df34393bb63d51d3390a064.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f1da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1DA 2828 bytes
SHA-256: 2f32373152b86590eb5c993bf8dbb57d20fc33770b92bc1ec6b5fd985d660553
font_01_sfnt_off0000fbe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE3 5404 bytes
SHA-256: ef9ff4b9eb3d8bad7a3d006f6c8ec51519064db71f26c619753336f15491cbc6
font_02_sfnt_off00010e6e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E6E 10928 bytes
SHA-256: f05c856e5bcfc0af981bdc570458a363fc5abb42271cc347b83854ccfeec4dcf