Malicious PDF — malware analysis report

Static analysis result for SHA-256 f87b2ad98b1d2ebd…

MALICIOUS

PDF

70.0 KB Created: 2021-09-28 01:13:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-16
MD5: ea84fbfaa0e35f6aed4ff81ef8cce356 SHA-1: 8e5a43da61a9d8347a470a0948b65decadeb83b6 SHA-256: f87b2ad98b1d2ebd49b1b804c4df898ba0b33cd8fe2b3cf530660c51daadb600
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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 farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://philabc.ru/uplcv?utm_term=uattend+app+for+android PDF link annotation
    • https://www.hermanosvalerorecio.com/ckfinder/userfiles/files/lasubepukatugobigom.pdfIn PDF document text
    • http://ned.ru/uploads/files/vumuxitegujixobavobinav.pdfIn PDF document text
    • http://ceramicaartisticamarsalese.it/userfiles/files/jexepilesosolomobus.pdfIn PDF document text
    • http://alefart.ru/admin/ckfinder/userfiles/files/21692328693.pdfIn PDF document text
    • http://buyyoutubesubscribers.com/ci/userfiles/files/72647599961.pdfIn PDF document text
    • https://esprimagroup.com/userfiles/file/85674883918.pdfIn PDF document text
    • http://bio-scan.com/userfiles/file/wisiwerekaponogoxapa.pdfIn PDF document text
    • http://noithatnhapkhaugiasi.com/luutru/files/11923209961.pdfIn PDF document text
    • http://tnshoppingbag.com/upfiles/file/xetor.pdfIn PDF document text
    • http://abbwingslynnhaven.com/uploads/files/sinewesibaxam.pdfIn PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/16150a4a966ef6---zonifavu.pdfIn PDF document text
    • https://dedywiredja.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613d3842afcee---32804364149.pdfIn PDF document text
    • http://upasamed.org/Content/uploads/files/mopopuzemibiz.pdfIn PDF document text
    • https://cyberbirddog.com/userfiles/files/topaviwanuwi.pdfIn PDF document text
    • https://vwb.mrv-educationservices.com/content_file/files/73229793768.pdfIn PDF document text
    • http://zzzwchem.com/upload/files/vekawon.pdfIn PDF document text
    • http://elitakhealing.com/ckfinder/userfiles/files/90442013194.pdfIn PDF document text
    • https://leunamgroup.com/wp-content/plugins/super-forms/uploads/php/files/d63175da71a1e94b0e35fe90173221c5/punepagamesam.pdfIn PDF document text
    • https://nusantarabet4d1.com/contents/files/gofejabexeka.pdfIn PDF document text
    • https://atputasbazes.lv/images/userfiles/files/nezewilekemimuvijuzibutu.pdfIn PDF document text
    • http://yokosohk.com/files/fckfiles/file/pubivavegomepo.pdfIn PDF document text
    • https://worldtradezone.com/userfiles/file/buvosomumamivupigeto.pdfIn PDF document text
    • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613ccc67ec32e---keramunaxamobosu.pdfIn PDF document text
    • http://dentalcenterstudio.it/userfiles/files/64376107176.pdfIn PDF document text
    • http://gardatrans.com/content/Files/88822649996.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b3e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB3E1 10284 bytes
SHA-256: 3bad7544fbb496f1d45567e544305e98d53170cdd78c5d02c1bb3aeedeaf8649
font_01_sfnt_off0000cb1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCB1E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000e330.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE330 15124 bytes
SHA-256: 08e5563e2161b8475f429c7de3865df2325557760dc6120fe8d449124a5231e7