Malicious PDF — malware analysis report

Static analysis result for SHA-256 c5d31e5015581691…

MALICIOUS

PDF

74.1 KB Created: 2021-09-08 18:27:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-28
MD5: 01ea8d90f4791182fccea7ef5cfbb1a7 SHA-1: e0a73d66d946c2bf0cb42deeb18e2b096e40c13d SHA-256: c5d31e5015581691128cdb4277886e8adaf0a67b6352abbe6e661555f3dfed50
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

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://altadirezione-consulting.it/userfiles/files/nexaxirolusalexuvisaro.pdf In PDF document text
    • http://thueotodn.com/uploads/image/files/18561294850.pdfIn PDF document text
    • https://equimat-cheval.fr/file/67484516446.pdfIn PDF document text
    • https://www.xcelsus.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613742be93fd3---dipebomamejibekam.pdfIn PDF document text
    • http://risme.vn/files/93543151313.pdfIn PDF document text
    • https://tigaintan.com/contents/files/faboz.pdfIn PDF document text
    • https://web-sila.ru/wp-content/plugins/super-forms/uploads/php/files/6123f5b4a34e0d3f2a531e0a80f4f25c/duwatigalobonisodasetesi.pdfIn PDF document text
    • http://duszek-lasu.pl/userfiles/file/6315839328.pdfIn PDF document text
    • http://elhammagazine.com/ckfinder/userfiles/files/zekur.pdfIn PDF document text
    • http://trenermichal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/161321c03a6e5e---xigugene.pdfIn PDF document text
    • https://mehreganimaging.com/images/upload/files/fifugakep.pdfIn PDF document text
    • http://j-club.eu/userfiles/file/37490588814.pdfIn PDF document text
    • http://devison-matras.ru/upload/file/kanebozerobafaji.pdfIn PDF document text
    • http://hzzxtl.com/UploadFile/file/20210908095050299.pdfIn PDF document text
    • http://getampedmag.com/ckfinder/userfiles/files/50914902966.pdfIn PDF document text
    • http://thekitchendesignstudio.org/uploads/files/zapozufogilutitebabiva.pdfIn PDF document text
    • http://ydchem.cn/filespath/files/20210904050148.pdfIn PDF document text
    • http://tetobox-budapest.hu/uploads/files/zedatorumorivowebaz.pdfIn PDF document text
    • https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/tmp/rotiborefusujaronax.pdfIn PDF document text
    • https://himalayanthailand.com/image/upload/File/mevolorixumadutig.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=isotope+practice+worksheet+pdfPDF link annotation
    • http://www.thaiticketmajor.com/static/imgUpload/files/66809295618.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_off0000be43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE43 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d65a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD65A 10696 bytes
SHA-256: 2f6224be1fea5f3106e1bb8b4ab25e024c53aafca4faed2332a6cde8312e85b2
font_02_sfnt_off0000ef23.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF23 16848 bytes
SHA-256: 2d918b6b4109ae6cd09b7ac36af9ce985438832070ec02cbebf7d63c63d6a552

Open this report in the interactive analyzer, or submit your own file for analysis.