Malicious PDF — malware analysis report

Static analysis result for SHA-256 425de967ecbf03da…

MALICIOUS

PDF

471.4 KB Created: 2021-12-21 23:33:10 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-15
MD5: 2105392e0721ac039f45e30cf867a63e SHA-1: 5d7d160cc9f13db38afb4a3ae1774e499a0bb21a SHA-256: 425de967ecbf03da21af43c2a3b33c75483f973a1190579fe86f4b6d84a3c2bb
144 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external URIs, including a link farm pointing to compromised WordPress upload storage. One heuristic specifically identifies an SEO redirector used for 'free-download phishing', indicating a likely credential harvesting attempt. The ClamAV detection further supports the malicious classification.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4741

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://caudafotografia.com/userfiles/files/25684852755.pdf In PDF document text
    • http://royalwedding.jp/images/blog/file/59457427523.pdfIn PDF document text
    • http://www.skup.it/wp-content/plugins/formcraft/file-upload/server/content/files/161b11df6c6d38---82319803038.pdfIn PDF document text
    • https://aqua2go.pl/galeria/file/remib.pdfIn PDF document text
    • https://argumentua.com/i/file/gowowijasixiwowonesugeget.pdfIn PDF document text
    • https://jagamimpi.info/contents/files/57980956543.pdfIn PDF document text
    • https://serrechevalier-skifun.com/imagesfile/zewufipipomiguzamox.pdfIn PDF document text
    • http://www.malagatour.es/ckfinder/userfiles/files/29842126462.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/m1e9pemartksat0r04o4bi9st1/92953245109.pdfIn PDF document text
    • http://faizleathergloves.com/userfiles/files/77234865651.pdfIn PDF document text
    • https://fizjolech.pl/userfiles/file/lejigujim.pdfIn PDF document text
    • http://archive-2014.humandoc.pl/attachments/file/nogoripefukofami.pdfIn PDF document text
    • http://bangdinhphucat.com/quangbasanpham/app/webroot/upload/image/files/lemedenum.pdfIn PDF document text
    • http://hzxgdz.com/images/upload/File/62774305788.pdfIn PDF document text
    • http://ministerium.pt/files/43054986299.pdfIn PDF document text
    • http://cardealer-space.com/js/upload/files/jupofimevujixewizi.pdfIn PDF document text
    • https://noursportevents.com/wheelmarine/userfiles/file/49035918321.pdfIn PDF document text
    • http://dinobajka.pl/Upload/file/96960416546.pdfIn PDF document text
    • https://keralatemples.info/ckfinder/userfiles/files/33083443470.pdfIn PDF document text
    • http://kammed.com/userfiles/file/87799867752.pdfIn PDF document text
    • http://logopeda-empatia.pl/content/file/94572881913.pdfIn PDF document text
    • https://easypayindia.in/userfiles/file/gasokesat.pdfIn PDF document text
    • http://ecohouse-lab.de/userfiles/file/39811619793.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614e532f5171d---53661712207.pdfIn PDF document text
    • https://miet.hu/kepek/59814680705.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/oscUj7J0Gjw/uplcv?utm_term=antimatter+black+market+enlightenment+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_off0006ec33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EC33 18972 bytes
SHA-256: 394c4aa66d74e07e0eea9ec939ec5e92efb1dfd4c73740106e450875cd7eae92
font_01_sfnt_off00071d8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71D8E 10708 bytes
SHA-256: 7ce84d6c39f929637dba44fd085c6a27391700b812487df3cf07db4164e65ba4
font_02_sfnt_off000735f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x735F1 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336

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