Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5eb03d85bea6f0d…

MALICIOUS

PDF

80.7 KB Created: 2021-03-15 15:13:53 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ce50b17d2512339c5aa350cb4d716718 SHA-1: c8f44ec9600353c14896fcb1c65d4c43711e2467 SHA-256: c5eb03d85bea6f0d6fb4f1279ba1dc46054f8730cb63624341fc04b47e5c527c
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs, many pointing to disposable domains, and is flagged by ML classifiers and ClamAV as malicious phishing content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a large number of links on disposable hosting, suggesting a phishing or malware distribution scheme. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://pelibifir.ru/wix?keyword=security+policy+prevents+use+of+camera+note+10 PDF link annotation
    • https://cdn.sqhk.co/rogevuzazi/y0EyjcN/the_plague_house_m._d.pdfIn PDF document text
    • http://bupitubegedew.getenjoyment.net/37732135582.pdfIn PDF document text
    • http://xafesuvorolivig.scienceontheweb.net/2709502486.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4486036/normal_5ff81e8a884ab.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379222/normal_603338e718107.pdfIn PDF document text
    • http://xosuxifareg.22web.org/washington_state_football_depth_chart_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/feliso/55339896327.pdfIn PDF document text
    • http://valuburikodajad.medianewsonline.com/wutubuvorabijozesogubibum.pdfIn PDF document text
    • https://cdn.sqhk.co/binisomomup/jEghjdo/worship_songs_2020_bethel.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452148/normal_60340973ad2fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502920/normal_600e22e534119.pdfIn PDF document text
    • http://lagulatobir.iblogger.org/womitexomavubarukidus.pdfIn PDF document text
    • https://cdn.sqhk.co/gadukupuwe/dIjiSZb/vetipaxufef.pdfIn PDF document text
    • https://cdn.sqhk.co/dujovibipu/fKjhgg3/dream_island_codes_halloween.pdfIn PDF document text
    • https://cdn.sqhk.co/takejirasomu/gjjLWii/king_ball_playground_game.pdfIn PDF document text
    • https://s3.amazonaws.com/zesixefe/the_office_season_3_episode_8_transcript.pdfIn PDF document text
    • http://fisujerekuvij.getenjoyment.net/jejereli.pdfIn PDF document text
    • https://cdn.sqhk.co/negapevu/hi9KDih/79876721648.pdfIn PDF document text
    • http://deliwubavamir.mypressonline.com/proofs_involving_similar_triangles_worksheet_answer_key.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://gejonutopufone.rf.gd/66593200550.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_off0000f11d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF11D 5500 bytes
SHA-256: 7a9ce8e78381a42945c23a428d1f4c90c6f0fea0d0787ca76ba4dcab132b6604
font_01_sfnt_off000103c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103C6 10388 bytes
SHA-256: fe06a4d402bc75ee238aff1e3d82864f1a80ab99a1d9f479a734c58893e044fe
font_02_sfnt_off0001274f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1274F 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3