Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e3a93c358de3b46…

MALICIOUS

PDF

288.8 KB Created: 2021-12-23 06:18:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: c4c8de296ea652f11c8785c952f68e82 SHA-1: 83bdc0a9d70671d68bd1936e9e8da4224fc6ab86 SHA-256: 4e3a93c358de3b4659787a33f15f588c78505626abc6035442b37b4fdb8dce6f
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9572

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://feuerwehrobrigheim.de/upload/files/34170158181.pdf In PDF document text
    • https://gulertrafik.com/wp-content/plugins/super-forms/uploads/php/files/88sg4u8admcgjh247nntgk61hu/konaninexinimize.pdfIn PDF document text
    • https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/eig51o6td0qhr4i015qdmtbc0r/7581558593.pdfIn PDF document text
    • http://www.abcklima.hu/data/editorfile/67995335506.pdfIn PDF document text
    • https://aventuraholidays.elladatravel.ro/mm/file/jimajidutebigew.pdfIn PDF document text
    • http://theseadiaries.com/ckfinder/userfiles/files/wuvarogalepureruloxabamus.pdfIn PDF document text
    • http://agro-partner.com/Image/files/modifewemopiwojopoxefuz.pdfIn PDF document text
    • http://indigobaby.eu/upload/files/puzumezujuvetomumabafa.pdfIn PDF document text
    • http://branonperformance.com/ckfinder/userfiles/files/roxiw.pdfIn PDF document text
    • http://sreecollegeofpharmacy.com/admin/kcfinder/upload/files/supaleduxixukej.pdfIn PDF document text
    • http://rothemtour.com/FileData/ckfinder/files/20210902_0A80861117A00A7D.pdfIn PDF document text
    • http://ch-bovi.com/upload/files/84828025760.pdfIn PDF document text
    • http://www.ebsjosepirosamaria.com/wp-content/plugins/formcraft/file-upload/server/content/files/161a417ca411a0---limuwiku.pdfIn PDF document text
    • https://suadienlanhhanoi.net/upload/files/xisinelinajik.pdfIn PDF document text
    • http://adamlegal.com/userfiles/file/17876028360.pdfIn PDF document text
    • http://www.artefuoricentro.it/js/lib/ckfinder/userfiles/files/40525675685.pdfIn PDF document text
    • https://cribpointonline.org/cribpointonline/userimages/file/kibibanagox.pdfIn PDF document text
    • http://volkshilfe-ktn.at/images/content/files/29595337817.pdfIn PDF document text
    • http://studionegro.net/userfiles/files/genafowarax.pdfIn PDF document text
    • https://luquluqu.org/public/assets/js/kcfinder/upload/files/lemoboxef.pdfIn PDF document text
    • https://immo-macedo.lu/userfiles/files/dikasivulinugetogebodim.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/4dZi1sgP-vI/uplcv?utm_term=mhsaa+tennis+reportingPDF 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_off000415e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x415E7 18888 bytes
SHA-256: c68c794dae055a8477362e6aea3fc79b5b37d7a408a3fc18c085f9806b7df8c6
font_01_sfnt_off000446d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x446D0 10480 bytes
SHA-256: 6fdbede837b05a2afee0adc55b8f0698f6f87da586ed7d83361c528b2cff9d4c
font_02_sfnt_off00045e92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x45E92 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336