Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca27402e7c366819…

MALICIOUS

PDF

229.7 KB Created: 2022-05-27 04:44:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2022-07-15
MD5: 96656e1ce1aec8adc609e177e03e7bc0 SHA-1: f4a71479fe55047e79459b81dea0c951ddb8f6b9 SHA-256: ca27402e7c366819f8292aff1366fb2fc6d878e6c71f53e78c1ac2a7e7810135
136 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains an image lure that redirects to a URL associated with phishing. The ClamAV detection and ML classifier also indicate maliciousness. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to lead users to a malicious site, likely for credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6593

Heuristics 5

  • 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.
  • 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://loheb.co.za/XSRYdR1H?utm_term=copy+text+from+pdf+to+word+without+line+breaks+free+online+free+printable PDF link annotation
    • http://cidadania23pr.org.br/ckeditor/kcfinder/upload/files/94987327444.pdfIn PDF document text
    • https://bewulikafujisew.weebly.com/uploads/1/3/5/3/135326730/7280648.pdfIn PDF document text
    • http://volareinmongolfiera.it/userfiles/files/65474173485.pdfIn PDF document text
    • http://musik-fachberatung-neumarkt.de/images/uploadedimages/file/tezelusipagavowimawosoda.pdfIn PDF document text
    • http://babika.cz/data/files/nefifamozepudifaxifa.pdfIn PDF document text
    • https://furedgym.webtarhely.org/webroot/upload/files/dudoran.pdfIn PDF document text
    • https://zofitete.weebly.com/uploads/1/3/2/7/132740948/7259100.pdfIn PDF document text
    • http://vertex-decor.com/userfiles/file/rusur.pdfIn PDF document text
    • https://defi128.phpascal.com/userfiles/files/nadejelafidoxesuno.pdfIn PDF document text
    • http://lngpetro.com/userfiles/file/11342889292.pdfIn PDF document text
    • https://kajivuzixoji.weebly.com/uploads/1/3/4/3/134332867/juremef-losenivetoneki.pdfIn PDF document text
    • http://www.peritaonline.es/ckfinder/userfiles/files/85120758292.pdfIn PDF document text
    • https://apexforestservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/162282588048a5---gexosalasofidemipe.pdfIn PDF document text
    • https://bisleriuber.genefied.co/ckfinder/userfiles/files/puxavititalokobo.pdfIn PDF document text
    • https://mufepubawitig.weebly.com/uploads/1/3/4/6/134614790/8343354.pdfIn PDF document text
    • http://www.deopendeur.org/imgUser/file/96251746074.pdfIn PDF document text
    • http://studiomilano.eu/userfiles/files/vonininogabuwujugurenujaj.pdfIn PDF document text
    • http://astorandblack.net/emailer/userfiles/file/wuwuwokofepidiz.pdfIn PDF document text
    • http://www.cenlaenvironmental.com/siteuploads/editorimg/file/36867014340.pdfIn PDF document text
    • https://gadikara.weebly.com/uploads/1/4/1/2/141256258/0176a355d6a.pdfIn PDF document text
    • https://apskarota.org/userfiles/file/powemiso.pdfIn PDF document text
    • https://tekebuzegox.weebly.com/uploads/1/3/0/8/130814382/894e841.pdfIn PDF document text
    • https://nergizleryapi.com/image/files/22242369410.pdfIn PDF document text
    • http://jd6618.com/jd6618/file/2022-2/file/LwpCms2022_02_19_10_57_08_1465.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/16206f7075257f---filonuronakozudinox.pdfIn PDF document text
    • https://brincandoeaprendendo.com/fotosempresa/files/jiroruwenanoxeravelobe.pdfIn PDF document text
    • http://emannsltd.com/userfiles/kumizakapefuvirixuti.pdfIn PDF document text
    • http://surtek.biz/image/files/20151125_002231.pdfIn PDF document text
    • https://kafakekamiv.weebly.com/uploads/1/3/4/6/134646951/ruzuxeda.pdfIn PDF document text
    • https://bentonhomebuilders.com/kcfinder/nutepesodoxefakopex.pdfIn PDF document text
    • http://makesomenoise.hu/upload/file/27327505811.pdfIn PDF document text
    • https://dverimilana.ru/media-temp/img/uploads/files/93848631971.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16212045731b51---48590658618.pdfIn PDF document text
    • http://immat.org.tr/kcfinder/upload/files/fapemutipiletorifovedupig.pdfIn PDF document text
    • https://powiedzdoktorze.pl/file/files/87839328130.pdfIn PDF document text
    • http://isiknakliyatmasko.com/img/editor/image/file/gufefufawunimu.pdfIn PDF document text
    • http://adgroup.co/userfiles/file/pekolupa.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 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_off000325b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x325B4 17380 bytes
SHA-256: 68c4b3ed81575b238d86c9332a2b1e78ce35e759f18f8e70ea90173bd68674f3
font_01_sfnt_off00035333.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x35333 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00036b4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x36B4A 11428 bytes
SHA-256: 88d0e3cbb9b26da9c2d5bdcb5510fe08f25c3f711c7352e263dbbba566baef3e