Malicious PDF — malware analysis report

Static analysis result for SHA-256 42541eaaf4d77050…

MALICIOUS

PDF

74.5 KB Created: 2021-09-30 10:49:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 11915ab653cdd4d594118a35df295378 SHA-1: 8b62f767b93301dbc5bf9dae9bcf570961fa9573 SHA-256: 42541eaaf4d7705061ed6233f8457cb8b926d30f147603ca8a0c4b57a1812f50
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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://lex-ter.ru/admin/ckfinder/userfiles/files/mifigijuja.pdf In PDF document text
    • http://nhahanghienminh68.com/upload/files/25461165205.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/161352d6be994f---gidumoviki.pdfIn PDF document text
    • https://pemaboutiquehotel.com/assets/userfiles/files/biriputakodigukemelexo.pdfIn PDF document text
    • http://jar-ted.pl/file/86715877511.pdfIn PDF document text
    • https://tideandtigers.com/ckfinder/userfiles/files/lurufo.pdfIn PDF document text
    • http://www.virtualaid.eu/wp-content/plugins/formcraft/file-upload/server/content/files/161498d1a49b68---lovejobizanegeb.pdfIn PDF document text
    • https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1615563c98ec2e---dezalojipunop.pdfIn PDF document text
    • http://ingore.cn/upload/files/lunaveken.pdfIn PDF document text
    • http://kroonzuivel.nl/ckfinder/userfiles/files/wuwimixu.pdfIn PDF document text
    • https://ph2020.org/FCKeditor/file/bifado.pdfIn PDF document text
    • http://zanethompson.com/userfiles/file/nesewijunazozinojasorami.pdfIn PDF document text
    • http://cuacuonnhaxuongbinhduong.com/upload/files/12353310271.pdfIn PDF document text
    • https://institut-arabe.org/ckfinder/userfiles/files/79836663576.pdfIn PDF document text
    • http://toshiteriyakiburien.com/uploads/files/lerakaxawerijitixufakisu.pdfIn PDF document text
    • http://sumisaedu.com/FileData/ckfinder/files/20210902_418D983D302F11BA.pdfIn PDF document text
    • https://nordavril.com/userfiles/file/zufonogunamib.pdfIn PDF document text
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614c79af4f767---43058624534.pdfIn PDF document text
    • https://www.fecomerciomg.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1612fc80f6302d---90034205574.pdfIn PDF document text
    • http://kabaretyimpresariat.pl/Upload/file/32721197623.pdfIn PDF document text
    • https://t4g.nasscomfoundation.org/wp-content/plugins/super-forms/uploads/php/files/h0ftto4d7kreqodc4t1jf3l0o7/zosufozin.pdfIn PDF document text
    • https://satesayap.com/contents/files/89179208687.pdfIn PDF document text
    • http://fmafirm.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/mupodotufuxivuxu.pdfIn PDF document text
    • http://dagmare.de/userfiles/file/sizopo.pdfIn PDF document text
    • http://bradzo-ep.com/uploads/files/83440508183.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=twilight+saga+breaking+dawn+part+1+full+movie+123moviesPDF 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_off0000bae0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBAE0 11736 bytes
SHA-256: 6b0b56076f67ad7b5e27438013db11f8b2a9f45311622b209b79ea50ebc0ec67
font_01_sfnt_off0000d677.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD677 16896 bytes
SHA-256: ea243ad205b62ba6636958e71cb0128d43199ea4847b62f48c8eecdaf5ba57f3
font_02_sfnt_off000101bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101BF 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1