Malicious PDF — malware analysis report

Static analysis result for SHA-256 82da1d34331b917b…

MALICIOUS

PDF

76.0 KB Created: 2021-03-16 18:56:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d1a4fd96a45b08eb7a23b19a44c15d4e SHA-1: b273b9570109c1bf61df20be18b8613a873943ae SHA-256: 82da1d34331b917b2547ce4fd084fb68db5904f6c20b84499325b8f7b3e398e9
184 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with at least one identified as a malicious redirector. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect the user to malicious infrastructure.

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
  • 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 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/strik?utm_term=what+is+development+ap+human+geography In PDF document text
    • https://mekebibarefuj.weebly.com/uploads/1/3/5/3/135335096/5902e.pdfIn PDF document text
    • https://sowematawenuw.weebly.com/uploads/1/3/1/1/131164153/romomuxozale_tukatog_kajasudasaz_bewufigovi.pdfIn PDF document text
    • http://thecaffeinatedstudent.com/57161378318mbsnl.pdfIn PDF document text
    • http://dragonflysagewellness.com/remevidulue1uzk.pdfIn PDF document text
    • http://xemizawufogutuf.scienceontheweb.net/capacitor_104.pdfIn PDF document text
    • http://zomusip.iblogger.org/xezokolirapefafonijux.pdfIn PDF document text
    • http://flowerport.store/passport_club_study_mapvy6gj.pdfIn PDF document text
    • https://jivimukik.weebly.com/uploads/1/3/0/7/130775904/13962a9222b6.pdfIn PDF document text
    • http://hookup757.fun/best_pencil_drawing_pictures_of_naturesd3vm.pdfIn PDF document text
    • https://nubesojobe.weebly.com/uploads/1/3/1/3/131398221/d6f667d526e3.pdfIn PDF document text
    • http://sowadegepixu.22web.org/6627188796.pdfIn PDF document text
    • http://erogan-oficial.site/somnia_anesthesia_salariescjflz.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://972af30b-04c2-4618-b911-83ba0b7fef9e.filesusr.com/ugd/84a5c6_5005c220b27b4014b7b44769f8b67592.pdf?index=trueIn PDF document text
    • http://gubadix.epizy.com/visapefesifumazeduzu.pdfIn PDF document text
    • http://vesoromu.epizy.com/beaver_lake_fishing_report_2018.pdfIn PDF document text
    • http://fotafufoka.epizy.com/xasomasozetivod.pdfIn PDF document text
    • https://6593eeda-10fe-4128-810f-cbbc79f0a4f8.filesusr.com/ugd/c0a4bf_33cf4d7f9f4147fab8675154bb3be030.pdf?index=trueIn PDF document text
    • http://wuragumok.atwebpages.com/geotechnical_engineering_salary_nz.pdfIn PDF document text
    • http://fukorow.epizy.com/fabafejumejisoxuwo.pdfIn PDF document text
    • http://lagozim.rf.gd/16302582715.pdfIn PDF document text
    • https://1fa67a36-2e8b-44cc-a955-751d80433762.filesusr.com/ugd/d85e51_fe2afdc706f94e7cb2adb4b8e9d1c212.pdf?index=trueIn PDF document text
    • https://4328a374-8b5c-4134-9cef-e132ca5fc89d.filesusr.com/ugd/6732b1_426d295f5e3d4de3899323aa4327a8b8.pdf?index=trueIn PDF document text
    • http://bivojeda.atwebpages.com/zefekibibe.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_off0000e9d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D6 5548 bytes
SHA-256: 190bee085fd14bebb23d3a36626d12f1ebe742a8efa26860e9f3a30ef901c910
font_01_sfnt_off0000fc9f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC9F 11176 bytes
SHA-256: 19a13da6338d4078dd3f0680518078f3cc51c7acad1318a13de3398a26193d67