Malicious PDF — malware analysis report

Static analysis result for SHA-256 86ccda3ba77e2c7d…

MALICIOUS

PDF

73.0 KB Created: 2021-02-24 15:01:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: 50cfcb7a93462937abd9426fcfacb769 SHA-1: 08cfa16fb215d0b530a2a20a27b95c95cc9d005c SHA-256: 86ccda3ba77e2c7dc35846229142d1d1944e07c8bc4a5e654996951a9753bc8f
184 Risk Score

Malware Insights

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

The PDF contains numerous embedded links pointing to disposable domains and known malicious redirectors, indicating a phishing or scam attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are indicative of a malicious document designed to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://yafferge.ru/strik?utm_term=how+many+carbohydrates+in+a+dunkin+donuts+blueberry+muffin In PDF document text
    • https://bolowotusupiwam.weebly.com/uploads/1/3/5/3/135300352/b1d402bb839926.pdfIn PDF document text
    • https://diwodineguxep.weebly.com/uploads/1/3/4/3/134305573/razir-jizulidof.pdfIn PDF document text
    • http://idslim-italia.site/74737144668kzxwt.pdfIn PDF document text
    • https://gejiraje.weebly.com/uploads/1/3/2/7/132740564/suxowurejepum.pdfIn PDF document text
    • http://adminhalil.com/figefusteb2.pdfIn PDF document text
    • https://pofomagod.weebly.com/uploads/1/3/1/4/131483550/d31f087064c8655.pdfIn PDF document text
    • http://giocodigital.website/87158473621dbn3x.pdfIn PDF document text
    • http://artyom.guru/nufusiv1mk00.pdfIn PDF document text
    • http://sodamasagu.66ghz.com/suxudonelafuvifuku.pdfIn PDF document text
    • http://vuxiparami.22web.org/audacity_windows_10_free.pdfIn PDF document text
    • http://hookup668.site/205952418828p179.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://nuxumejaxumem.epizy.com/12628315687.pdfIn PDF document text
    • http://nekodigeteremi.rf.gd/sheet_street_vacancies_in_cape_town.pdfIn PDF document text
    • http://liwumulexajuvi.epizy.com/minexid.pdfIn PDF document text
    • http://sopikakerozobud.epizy.com/black_screen_video_free.pdfIn PDF document text
    • http://tizepadeda.rf.gd/aiou_online_admission_form_b._ed_2019.pdfIn PDF document text
    • http://lanelubeberasi.rf.gd/tarogezebelafuvopesina.pdfIn PDF document text
    • http://rosoxejib.epizy.com/cellule_mucipare_caliciformi_dove.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cf02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF02 5504 bytes
SHA-256: 6d9d5acca67cb2d3ced028d8296904dd1d5825d64d8c837c1d0946cd284d147b
font_01_sfnt_off0000e18d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE18D 11680 bytes
SHA-256: f94a14755edc63ac3261dc0d89d55566f64e41066163d002083ddff623a13110
font_02_sfnt_off000107ec.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107EC 4324 bytes
SHA-256: a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f