Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d773e82d495e7db…

MALICIOUS

PDF

73.7 KB Created: 2021-03-14 15:41:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ab12f544e4494568a73829ca0f041ede SHA-1: dd01cda50a859b43f12914a871b085b06b7f14e1 SHA-256: 0d773e82d495e7db74380cf5a67915c6583ffc989cd0312bbd2b6c61ea5c8cce
126 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URLs, suggesting a phishing or redirection scheme. The PDF structure and embedded links point towards a spearphishing attachment attack vector. No scripts were extracted, but the presence of multiple disposable hosting links and UTM parameters suggests an attempt to obscure the final destination and track user engagement.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • 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://nipisod.ru/strik?utm_term=what+is+1nf+2nf+and+3nf+in+database PDF link annotation
    • https://cdn.sqhk.co/serojimo/hheMicg/xugugubezarujexevozi.pdfIn PDF document text
    • https://cdn.sqhk.co/vonixilavot/ichghgJ/collision_reporting_centre_toronto_toryork.pdfIn PDF document text
    • http://jonotijero.medianewsonline.com/how_to_replace_bose_headphones_ear_pads_qc25.pdfIn PDF document text
    • http://zesenadozefut.sportsontheweb.net/soxawamitipulomab.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4422137/normal_5fec5236ec9b9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489596/normal_5fe77409edbcb.pdfIn PDF document text
    • http://getepitisux.mywebcommunity.org/filirumemiwujedaparufasu.pdfIn PDF document text
    • https://cdn.sqhk.co/bibilofefi/hi4hchc/union_electrician_apprentice_salary_california.pdfIn PDF document text
    • http://ririzobe.medianewsonline.com/lekubemitasodevogob.pdfIn PDF document text
    • https://cdn.sqhk.co/molivovuki/Es84mgd/83464338022.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427783/normal_5fefa6a2d0c4e.pdfIn PDF document text
    • http://pugisapi.mypressonline.com/who_is_mandalorians_father.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471230/normal_601ce675b3e73.pdfIn PDF document text
    • https://cdn.sqhk.co/zuzipogowita/jggigcm/89462963646.pdfIn PDF document text
    • http://fibipowokogo.sportsontheweb.net/cultivo_cebolla_china.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499636/normal_6009a896328a7.pdfIn PDF document text
    • https://cdn.sqhk.co/rewufarelaze/hdsWB8g/derivatives_using_limits_worksheet.pdfIn PDF document text
    • https://cdn.sqhk.co/nugizape/aifjfNU/zasemarezenokidoxipa.pdfIn PDF document text
    • https://cdn.sqhk.co/vuwewiwudesi/icYjeje/zigzagoon_evolution_level.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4459164/normal_602266f3353c1.pdfIn PDF document text
    • https://cdn.sqhk.co/zasokolof/BhcAijl/89870871042.pdfIn PDF document text
    • https://cdn.sqhk.co/puxedimuwo/mIgfsX3/hot_rod_garage_decorating_ideas.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://zudupaxub.myartsonline.com/differentiate_between_gdp_and_national_income.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_off0000e0dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0DD 5368 bytes
SHA-256: 2b1938b088985f3a23674e015e4d3fb806cac4a7a9c1817e41b9a19979f5962a
font_01_sfnt_off0000f335.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF335 11060 bytes
SHA-256: 90963661ffa4ec7b70df32a995e535f0c10effd46a65861e577d08923e5a8f68