Malicious PDF — malware analysis report

Static analysis result for SHA-256 445f78109ed14bda…

MALICIOUS

PDF

120.2 KB Created: 2021-12-21 17:23:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-11
MD5: 774d1818b952d5ad0753c75adbd23e2d SHA-1: c13be7aac23ee7e9344b99a76b257fd911a1f638 SHA-256: 445f78109ed14bdaaf081e4069a79491c6cc6618fd5590acb254bc8eb6b27435
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

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://parc-hotel.info/file/40659531203.pdf In PDF document text
    • http://shopabrang.com/images/files/ganigunigeliwube.pdfIn PDF document text
    • http://systempro.kr/userData/board/file/musonasipoje.pdfIn PDF document text
    • http://al-bandak.com/userfiles/file/63270423445.pdfIn PDF document text
    • https://futuresbuilder.net/dayafter/uploadimages/newsimages/file/safezuva.pdfIn PDF document text
    • http://spbmedaks.ru/sites/default/files/uploads/43349020675.pdfIn PDF document text
    • http://yachtales.net/admin/userfiles/files/92135026396.pdfIn PDF document text
    • http://china-baby-clothes.com/d/files/vomejuv.pdfIn PDF document text
    • https://12shio5.com/contents/files/seraxefekakozadaxolafun.pdfIn PDF document text
    • http://fujieshubao.com/zk/UploadFile/file/2021111519301573499.pdfIn PDF document text
    • https://audreyheselmans.com/_files/file/20337113119.pdfIn PDF document text
    • http://wami.cc/data/files/69015529706.pdfIn PDF document text
    • http://larben.cz/media/images/upload/file/tulilekiwebudixokubunadup.pdfIn PDF document text
    • http://tomaszfilipczak.pl/userfiles/file/94208902709.pdfIn PDF document text
    • https://swalaya.in/userfiles/file/kapenixerakid.pdfIn PDF document text
    • http://peaceinsrilanka.lk/userfiles/file/46141169221.pdfIn PDF document text
    • http://ceskylakros.cz/userfiles/file/gagotuzap.pdfIn PDF document text
    • https://www.tonygssoulfood.com/wp-content/plugins/super-forms/uploads/php/files/066fb6d259edab22c5fdfbccca156d31/19860068766.pdfIn PDF document text
    • https://congchung7.com/upload/file/79049624903.pdfIn PDF document text
    • https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/16168b0e2c2339---31050323644.pdfIn PDF document text
    • https://giriconsultancy.com/content_files/files/gesapako.pdfIn PDF document text
    • http://agaugservice.ukrkarta.ua/fckeditor/userfiles/file/sifajukewubev.pdfIn PDF document text
    • http://www.zav-mito.si/wp-content/plugins/formcraft/file-upload/server/content/files/1614c6b4070016---27246979205.pdfIn PDF document text
    • http://yaan121.com/uploads/files/202109151534488678.pdfIn PDF document text
    • http://podiummoda.ru/userfiles/file/56383879440.pdfIn PDF document text
    • http://aquitaine.annuaire-regional.com/ckfinder/userfiles/files/tififeri.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/HTGXzuRVGb4/uplcv?utm_term=caslon+titling+std+regular+font+freePDF 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_off00017207.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17207 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off000188ab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x188AB 10660 bytes
SHA-256: 894f7a60bc06f7ef2d8ac867a014d69744208af1111654c95cf2e9a7c96ac1e0
font_02_sfnt_off0001a100.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A100 18872 bytes
SHA-256: 24245fcf5a64e3547885c6e0722da3ad12b88811a7234afffebf9f80d918a6ae