Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d8dcfb3ee261ddb…

MALICIOUS

PDF

91.7 KB Created: 2021-08-08 08:46:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-18
MD5: 71adf56229aaafe55a331c22ea47ff5d SHA-1: 2fa4310c8dc1ca8cccb00d70609f81920bd02d37 SHA-256: 5d8dcfb3ee261ddbeb95ee1d9868de53f9725471a53ea1e6ab82d3b939159588
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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 http://kapalishakti.com/ckfinder/userfiles/files/bodefeforozugudojuz.pdf In PDF document text
    • http://www.recetasyconsejos.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ccd7843624---soxuganenikoxesanavuxado.pdfIn PDF document text
    • https://shoreluxurylimos.com/userfiles/files/pibatij.pdfIn PDF document text
    • https://www.grandiosa.is/wp-content/plugins/super-forms/uploads/php/files/7pf54803pnk34pll72pr8rjtm4/kivax.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a090c37188---51398864694.pdfIn PDF document text
    • http://anhuishangbiao.com/upload_fck/file/2021-4-29/20210429002852213308.pdfIn PDF document text
    • https://rugerwafers.com/demo/ruger/beta/userfiles/files/vekunoj.pdfIn PDF document text
    • http://solarwindependence.com/ckfinder/userfiles/files/9599364608.pdfIn PDF document text
    • https://webfox.net.au/wp-content/plugins/super-forms/uploads/php/files/ebe2a5028eb0670cfd2ef56dc5f45d95/93846918923.pdfIn PDF document text
    • http://al-bandak.com/userfiles/file/pefibadatagemozi.pdfIn PDF document text
    • http://www.hptindia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6c67bdb76e---1701246871.pdfIn PDF document text
    • http://prodesign31.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16088b30c920c7---47252356285.pdfIn PDF document text
    • http://dsm-trhs68.com/clients/8/81/818e764d3414495a915a5f66638dc9bf/File/lukugagafinoluwakege.pdfIn PDF document text
    • http://grupopiscis.com/upload/files/mobifepaxemibizit.pdfIn PDF document text
    • http://ballard1966.com/clients/22636/File/jejin.pdfIn PDF document text
    • http://www.belladermeestetica.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a1ecabe220a---50125965321.pdfIn PDF document text
    • http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/6jck2opoq4fb1ahb1233vks3hi/33196853472.pdfIn PDF document text
    • https://egyptsuntours.com/userfiles/files/29302605115.pdfIn PDF document text
    • https://west-holding.com/userfiles/file/sopenatura.pdfIn PDF document text
    • http://analogsys.com/uploaded/file/167512260960f494e4ea62b.pdfIn PDF document text
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/84cfb1d35c1280695e183f528ce7b5ac/nefenipugozutageb.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ad2ccd9039b---83427427845.pdfIn PDF document text
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160777470ac099---xasob.pdfIn PDF document text
    • http://augustaelectricalwork.com/editorData/file/63043026908.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=corydoras+care+tipsPDF link annotation
    • 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_off00010135.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10135 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001194c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1194C 10504 bytes
SHA-256: cd0faa4761ed944fd16c0f14f84c5d962c88647881ebe422118aeddbc5060b1f
font_02_sfnt_off0001315f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1315F 17424 bytes
SHA-256: 2d98e6957324a7d0a7cd0316934154448cdef81295ed531e47628f3c69fd304b