Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8b64a86c225545d…

MALICIOUS

PDF

67.8 KB Created: 2020-11-16 21:02:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-04-06
MD5: 05c8f9abd18eb1a9eea73c4a676757e0 SHA-1: 89c35bc95ff9884200d63247e893cb0ebca41b79 SHA-256: a8b64a86c225545dc134b4a978c1bdbec6d5647862f25a1247d80916729fa4f3
126 Risk Score

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
  • 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://gisetokitalakak.weebly.com/uploads/1/3/4/6/134600310/ziwikapizuzafa_kepada_ruvovut_xelurakug.pdf In PDF document text
    • https://s3.amazonaws.com/fejififimaketo/answer_clip_art_free_images.pdfIn PDF document text
    • https://s3.amazonaws.com/bufipevuril/gisinubuginuxelosa.pdfIn PDF document text
    • https://s3.amazonaws.com/wibadinavosunom/cellule_animale_et_vgtale_exercice.pdfIn PDF document text
    • https://bimelubisazabe.weebly.com/uploads/1/3/4/4/134492892/2789155.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/93825040251.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4402289/normal_5f9502fa5c7b4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366620/normal_5fa5156e5d351.pdfIn PDF document text
    • https://sakuvida.weebly.com/uploads/1/3/0/7/130775714/cbb0ca98c903.pdfIn PDF document text
    • https://mutimerujufidi.weebly.com/uploads/1/3/4/5/134526942/6333473.pdfIn PDF document text
    • https://s3.amazonaws.com/vukusa/nebibajeziziwawaxi.pdfIn PDF document text
    • https://gasilarax.weebly.com/uploads/1/3/4/5/134595303/togavoxivo.pdfIn PDF document text
    • https://traffset.ru/strik?utm_term=250+rgv+fiche+techniquePDF link annotation
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off0000cd9a.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off0000cd9a.bin)
    • https://uploads.strikinglycdn.com/files/920d23d2-399c-4107-adde-9d39006ab9db/zarojowazimavixufi.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 extracted file (font_00_sfnt_off0000cd9a.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cd9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD9A 5212 bytes
SHA-256: 068541e70eebccabf0aaf21c0533018760c67c95970ff0dd5fa46983f9062c62
font_01_sfnt_off0000df66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF66 10412 bytes
SHA-256: 009b55e7c2251bd19d5cc8fb21305a179f7c02ad354bbbd57245a7f3c8b7fb18