Malicious PDF — malware analysis report

Static analysis result for SHA-256 0eb4908badaae5fc…

MALICIOUS

PDF

75.7 KB Created: 2021-02-11 01:25:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-05
MD5: c6147db1aecbd5f649acd25b4026ad4f SHA-1: 3e27d37f3bb5f33633f7af6ac7a9bc679137af84 SHA-256: 0eb4908badaae5fc9cfe312aea2dfea7b2bfee7f03df65d9305007f50f765797
166 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF contains multiple heuristic firings indicating malicious intent, including random URLs and link farms on disposable hosting. The ML classifier and ClamAV detection strongly suggest this is a malicious PDF, likely used for phishing or distributing further malware via the embedded links. No scripts were extracted, but the presence of external URIs points to a download or redirection mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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 link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not 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.
  • 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://leonvi.ru/123?utm_term=personajes+del+principito+imagenes PDF link annotation
    • https://zugozoriv.weebly.com/uploads/1/3/4/7/134770463/raxudejakukuron.pdfIn PDF document text
    • https://cdn.sqhk.co/zidexamuwela/O6gixeQ/exotic_bird_rescue_los_angeles.pdfIn PDF document text
    • http://uber-global.com/pakebabekilonunefemumot3o5b.pdfIn PDF document text
    • https://cdn.sqhk.co/rureroso/gNkJXiR/meteor_storm_2020_movie.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466996/normal_5fd7f8843cd19.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426688/normal_5fdd78c35adcd.pdfIn PDF document text
    • https://cdn.sqhk.co/rorifugera/E3iagfO/faviwos.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486975/normal_6007623263720.pdfIn PDF document text
    • http://yoga-italy.space/maternity_leave_form_after_birthw04de.pdfIn PDF document text
    • http://usersdeviceprotectionservice.site/zupazupunugopilotedoxuvobetxcd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482191/normal_5ff6127b2965d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427795/normal_60186c811c42e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/donukadizolin/bangla_natoker_boi.pdfIn PDF document text
    • https://s3.amazonaws.com/lixuduwonifa/42902137004.pdfIn PDF document text
    • https://s3.amazonaws.com/rafiralexezol/arya_songs_naa_songs_audio.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_off0000e850.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE850 5472 bytes
SHA-256: 673f92b9a43c06540a7a75c95462ef7d565847999e86675c2e4dbdee6743ecdd
font_01_sfnt_off0000fad7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAD7 11512 bytes
SHA-256: 435fa68a68ee50cba0ab3060d156f11066f3c1710419196c2a2dc153086d0486

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