Malicious PDF — malware analysis report

Static analysis result for SHA-256 87550650b3407718…

MALICIOUS

PDF

100.8 KB Created: 2022-04-02 21:48:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-04
MD5: cc4f15438856b5358fcb770c2aa19d7c SHA-1: 251fb007297748e1c320e795e440a816531595c4 SHA-256: 87550650b340771853f5c8c89b90a071d73124fbb1c7cb7d61c19e52e3333eed
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://lovig.co.za/YmrXLWy8?keyword=cuales%20son%20las%20equivalencias%20de%20las%20unidades%20del%20sistema%20internacional PDF link annotation
    • https://tebelusagunesaz.weebly.com/uploads/1/3/4/3/134318259/lexavipitikemelek.pdfIn PDF document text
    • https://gira-rozetki.su/kcfinder/upload/files/zixululepepamajuw.pdfIn PDF document text
    • https://bleikss.com/userfiles/file/47015260428.pdfIn PDF document text
    • https://wepidunobon.weebly.com/uploads/1/3/1/4/131452842/9853249.pdfIn PDF document text
    • https://sosojenanoxo.weebly.com/uploads/1/3/5/3/135316520/kapuxunurujarup.pdfIn PDF document text
    • https://godewofevi.weebly.com/uploads/1/3/2/8/132814364/4683458.pdfIn PDF document text
    • https://damusabuweko.weebly.com/uploads/1/3/4/6/134609075/karagegasawajel.pdfIn PDF document text
    • https://kaemsp.org/upload/editor/file/wofekasijefifagasuretiwox.pdfIn PDF document text
    • https://rakbah.healthybitespk.com/alpha/ckfinder/userfiles/files/43276605278.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/16217e9291f140---maluwaxonajawakewagen.pdfIn PDF document text
    • https://gogalafubixuvu.weebly.com/uploads/1/3/4/6/134642314/tininibap_bexabamakeloram_mamike_vovidujox.pdfIn PDF document text
    • https://ziroluberunoreg.weebly.com/uploads/1/3/4/4/134456507/xotenamavete-jejotibida-xamodifogitesiz.pdfIn PDF document text
    • http://bluecars.pl/userfiles/file/mesud.pdfIn PDF document text
    • https://wufowidujexo.weebly.com/uploads/1/3/5/2/135293423/3964313.pdfIn PDF document text
    • https://bugabomusajo.weebly.com/uploads/1/3/4/5/134509224/2865589.pdfIn PDF document text
    • http://protectpharmaceuticals.com/Images/files/22836390035.pdfIn PDF document text
    • http://bud-med.eu/userfiles/file/tamafujisudepuxojejavigu.pdfIn PDF document text
    • https://febefadu.weebly.com/uploads/1/3/1/4/131453100/metere.pdfIn PDF document text
    • http://2013.letnifestiwal.pl/ckfinder/userfiles/files/36616544634.pdfIn PDF document text
    • https://fidevawane.weebly.com/uploads/1/3/0/8/130814252/646897.pdfIn PDF document text
    • https://revegeworosopo.weebly.com/uploads/1/3/1/6/131637057/80949.pdfIn PDF document text
    • https://wekupadafar.weebly.com/uploads/1/3/5/3/135315244/7717401.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://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off00011f52.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00011f52.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011f52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F52 10876 bytes
SHA-256: b311797ee9037acfdeadcb361d255be5450251f1685736b954d071c740bf93db
font_01_sfnt_off0001383f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1383F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00015051.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15051 20316 bytes
SHA-256: 54e3e1f0f1774553cfda87ba247155599d1c72afe699e9f251de5be7f775817f