Malicious PDF — malware analysis report

Static analysis result for SHA-256 f033b0860a7a5889…

MALICIOUS

PDF

84.6 KB Created: 2021-03-02 21:50:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 40bf75fd5f54f0104d3ea8ad5ee96046 SHA-1: 280b875fa0c4b76c43ee89b52146824d1cb99a0d SHA-256: f033b0860a7a5889d37eb6a7592c607f63161e4c522675001e614c5ab510e600
126 Risk Score

Malware Insights

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

The PDF contains a high number of embedded URLs pointing to disposable domains and link farms, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links are consistent with techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://lozipotod.ru/123?utm_term=washing+pole+build+dark+souls+3 PDF link annotation
    • http://creditscoreusa.info/formel_reaktionsweg_gefahrenbremsung1lmz9.pdfIn PDF document text
    • http://opticsystem.website/escape_plan_3_prison_locationzp2tb.pdfIn PDF document text
    • http://idealslimitalia-ufficiale.site/watch_the_hunger_games_mockingjay_part_2_online_free_no_sign_upj1jfg.pdfIn PDF document text
    • https://cdn.sqhk.co/xumefotebe/e1RgjCq/dodemadasej.pdfIn PDF document text
    • https://cdn.sqhk.co/vozeseseber/2jDhc08/king_herod_bible_wiki.pdfIn PDF document text
    • http://puvepum.getenjoyment.net/how_did_agricultural_revolution_change_peoples_lives.pdfIn PDF document text
    • https://cdn.sqhk.co/borefigux/bOiaIbp/tricky_brain_games_app.pdfIn PDF document text
    • http://zekabor.iblogger.org/2012_toyota_camry_service_bulletins.pdfIn PDF document text
    • http://tomandbxof.site/dufipifotolj0ixz.pdfIn PDF document text
    • http://myfirstsite.xyz/43530577666ntb2q.pdfIn PDF document text
    • https://letavozogat.weebly.com/uploads/1/3/5/9/135978758/wuwurapaga.pdfIn PDF document text
    • http://fujubipe.22web.org/pevofuderebatefo.pdfIn PDF document text
    • http://mmmmmme.space/score_counter_javascripthlwnr.pdfIn PDF document text
    • http://gakawisogafuga.mygamesonline.org/vimukutuwitizenevep.pdfIn PDF document text
    • https://cdn.sqhk.co/kugefiruxat/whivBgd/40046259819.pdfIn PDF document text
    • http://dadivasim.sportsontheweb.net/wodulisubumadofepivod.pdfIn PDF document text
    • http://dipazekonowa.mypressonline.com/xexavorivasufotedi.pdfIn PDF document text
    • https://tepiduti.weebly.com/uploads/1/3/5/9/135974730/c3513d8a89ab5a9.pdfIn PDF document text
    • https://doxavigefixo.weebly.com/uploads/1/3/5/3/135391607/wesumazimuzukaxupok.pdfIn PDF document text
    • https://girowotejetut.weebly.com/uploads/1/3/1/4/131406843/bovigozugelak_xixetulitabex_rasepematozexob_lopuxufus.pdfIn PDF document text
    • http://edayafar.xyz/folder_colorizer_1._4._68cmtu.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://tupikodufalapa.epizy.com/monitor_cardaco_speedo_66002g0emnp1.pdfIn PDF document text
    • http://lupibewexuzu.rf.gd/colonoscopy_surveillance_guidelines_nz.pdfIn PDF document text
    • http://nerokigonone.rf.gd/95183843452.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_off0000ff8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF8F 5404 bytes
SHA-256: 860c6b71d57258f791fc69e89647402ac4e1ca6790a4576338b7445d601086e7
font_01_sfnt_off000111d6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x111D6 10580 bytes
SHA-256: fd0fbbfa1b167bede6993a814c941f82eec0dca033d10663aca6698f44f3585a
font_02_sfnt_off0001362e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1362E 4324 bytes
SHA-256: 9f355172d696dda274cac500966718f112ce76951f19577ac4888987ea6471b2