Malicious PDF — malware analysis report

Static analysis result for SHA-256 c26be61b1c6a9e21…

MALICIOUS

PDF

79.4 KB Created: 2021-04-19 03:44:28 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7350706096b115813b82b2e52cfee19a SHA-1: d78c7d9ac3ac2e72341627d34837675b2c5368d6 SHA-256: c26be61b1c6a9e21548a3715dddb618fde2ce4a2d84c6b2bc148d8948d8e7c6a
126 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many of which point to disposable domains and are structured as link farms. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to phishing sites or download further malicious content. The presence of external URIs and link farm heuristics suggests an attempt to distribute malware or facilitate phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://xajibur.ru/strik?utm_term=kill+team+movie+netflix PDF link annotation
    • http://mekujoviwe.mypressonline.com/paxibe.pdfIn PDF document text
    • http://wotukujis.sportsontheweb.net/astrology_book_in_gujarati.pdfIn PDF document text
    • http://manuximaxemeje.scienceontheweb.net/bible_commentary_on_the_book_of_genesis.pdfIn PDF document text
    • http://idealica-ordina.site/gokipukaviknnct8.pdfIn PDF document text
    • http://jidogirikar.mygamesonline.org/xusuximikufiji.pdfIn PDF document text
    • http://midarujiwuvi.mygamesonline.org/ceh_v9_certified_ethical_hacker_version_9_practice_tests.pdfIn PDF document text
    • http://laxana.ru/kafepupixikitn4ayj.pdfIn PDF document text
    • https://nidimojisojetuz.weebly.com/uploads/1/3/5/9/135962904/2843059c2598fe.pdfIn PDF document text
    • https://nivirijimukavut.weebly.com/uploads/1/3/2/6/132681164/gopitoj.pdfIn PDF document text
    • http://kyponnik.online/mazak_online_manualshbdsz.pdfIn PDF document text
    • http://kopogaxepaku.sportsontheweb.net/60142113379.pdfIn PDF document text
    • https://tojemevu.weebly.com/uploads/1/3/1/3/131384016/5148218.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4492257/normal_606b6149efd62.pdfIn PDF document text
    • https://jabesukugadipo.weebly.com/uploads/1/3/2/8/132814964/lupijasutofujeb_nedujed_vesiboj.pdfIn PDF document text
    • http://vulgargirls.fun/wuraxajojufuz3bahz.pdfIn PDF document text
    • https://kosukanawator.weebly.com/uploads/1/3/5/3/135304621/balorujajesufi.pdfIn PDF document text
    • https://bawosizegidaw.weebly.com/uploads/1/3/1/4/131411147/bfb231030f1f9e3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4409113/normal_5fec17c27c2ad.pdfIn PDF document text
    • https://sugasukeni.weebly.com/uploads/1/3/4/8/134878852/559ecd.pdfIn PDF document text
    • http://passive-income.ru/aspiracin_de_secreciones_por_traqueostomaiwr95.pdfIn PDF document text
    • http://zakosemej.mypressonline.com/diwipejudogebe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474719/normal_60566e20260af.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://vekisofekibote.myartsonline.com/livre_apprendre_le_franais_gratuit.pdfIn PDF document text
    • http://neloralo.myartsonline.com/plant_cell_wall_structure_and_function.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_off0000ecd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECD2 4524 bytes
SHA-256: 6deae5455da68c168824c6bf4f5eda3e05fa0ee24b62433834d491cab2bbc092
font_01_sfnt_off0000fc22.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC22 11276 bytes
SHA-256: f850a3e8d1aea7bf7ec4da9077bf088346751c5f9cc27faad3c4771c1ba056c4
font_02_sfnt_off0001222b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1222B 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333