Malicious PDF — malware analysis report

Static analysis result for SHA-256 b61933f70df0d8fb…

MALICIOUS

PDF

226.1 KB Created: 2022-03-22 16:59:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-07-15
MD5: e7cb9f72d81fa10a3cda75677f1d0292 SHA-1: 196f44805a63fdbbe635d77cb45f4dbc306e152b SHA-256: b61933f70df0d8fb06d24c9f7bd316daa9d57280ac3cf259d3bba0d4b7ad275b
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.8281

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
  • 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.
  • 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://ourcampuswindow.com/ckfinder/userfiles/files/90907605949.pdf In PDF document text
    • http://m-camper.ru/ckfinder/userfiles/files/zapezinazupogud.pdfIn PDF document text
    • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1620839b0d6375---jitodi.pdfIn PDF document text
    • http://3e-machinery.ru/app/webroot/filesfiles/11820823804.pdfIn PDF document text
    • https://www.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/0ddea1d45d5a8376f5976647ccbc4bec/vokoraku.pdfIn PDF document text
    • http://sxcec.org/userfiles/file/89958125946.pdfIn PDF document text
    • http://kimhoatra.vn/upload/fckimagesfile/xenutawedibiloroduv.pdfIn PDF document text
    • https://zemtechnika.lt/public/site/0files/2987531480.pdfIn PDF document text
    • https://www.voctestbursa.org/editconsole/kcfinder/upload/files/94477418867.pdfIn PDF document text
    • https://alcc.vn/wp-content/plugins/super-forms/uploads/php/files/c313mh39h3hf4lav9mn4rmni0j/vuwavawilotu.pdfIn PDF document text
    • https://pcparts.fr/ckfinder/userfiles/files/pakunagetuzake.pdfIn PDF document text
    • http://eca.or.th/ckfinder/userfiles/files/35094818735.pdfIn PDF document text
    • https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/f33v0g3rmgeovomm55k0iuhpo7/zupulukuzapaxijal.pdfIn PDF document text
    • http://asclyziarskyklub.sk/userfiles/file/99799891035.pdfIn PDF document text
    • https://thefashion.asia/admin/kcfinder/upload/files/bodarofiwiwaxa.pdfIn PDF document text
    • http://mopron.ru/upload/files/musimajom.pdfIn PDF document text
    • http://sibzakon.ru/ckfinder/userfiles/files/20412046349.pdfIn PDF document text
    • http://synowka.pl/galeria/file/96078320492.pdfIn PDF document text
    • http://www.oftalmed.com.br/files/ckeditor_custom/kcfinder/upload/files/tixewodopizusug.pdfIn PDF document text
    • http://todaystravel.com.tn/kcfinder/upload/files/xegivotuwodijivujawojap.pdfIn PDF document text
    • https://www.osteopathe-montpellier-sud.fr/ckfinder/userfiles/files/desoludobudatoka.pdfIn PDF document text
    • http://marathon-gexin.com/Uploadfiles/files/2963657004.pdfIn PDF document text
    • https://libertavoyages.com/kcfinder/upload/files/gimipibixosemidotir.pdfIn PDF document text
    • http://pscemetery.com/userfiles/file/79804139100.pdfIn PDF document text
    • https://aristi-trap.com/upload/users/files/saxewuja.pdfIn PDF document text
    • http://bartuceviri.com/userfiles/file/89753594743.pdfIn PDF document text
    • https://colod.co.za/XSRYdR1H?utm_term=obs+rainbow+six+siegePDF link annotation
    • http://aventurinproject.tesztweboldal.com/uploads/files/davexinujojebul.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 extracted file (font_00_sfnt_off00031984.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00031984.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00031984.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31984 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0003309f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3309F 18532 bytes
SHA-256: 7761a5202e93d3e6ca7db175bb4fc5a20a61ad75f8c29e77ff101acfdaaa1bd6
font_02_sfnt_off0003615f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3615F 10492 bytes
SHA-256: b84508c3e4c01363555b0f7947335ee6f4cd843b435e6ac8bb77dcdd3d16523f