Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd7fc8621ca20bb9…

MALICIOUS

PDF

469.3 KB Created: 2022-03-14 21:28:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-19
MD5: 8fdcac238d1e8c6a1c5d4cee3809d694 SHA-1: 6b9e070db3a6d220c9ac047530903a850e2ef810 SHA-256: cd7fc8621ca20bb9e832b80330f588965f6d81224445c7b39cf3a9619a737e62
144 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4919

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 https://colod.co.za/XSRYdR1H?utm_term=informe+descriptivo+escolar PDF link annotation
    • http://headsaigonanhphat.com/media/ftp/file/63863450839.pdfIn PDF document text
    • http://gtlitalia.com/userfiles/files/7295309078.pdfIn PDF document text
    • https://brs.jo/userfiles/files/2915037097.pdfIn PDF document text
    • http://thecpg.org/kcfinder/upload/files/72785075936.pdfIn PDF document text
    • https://stcatherine.ac.ug/wp-content/plugins/formcraft/file-upload/server/content/files/1622927c922bc3---tukati.pdfIn PDF document text
    • https://pecel-piok.hu/images/files/9734268496.pdfIn PDF document text
    • https://hgd.hr/admin/kcfinder/upload/files/82570802573.pdfIn PDF document text
    • http://arci-mp.fr/admin/File/kidabamakezomilabudoje.pdfIn PDF document text
    • http://boschvietnam.vn/files/usersfiles/files/95757001278.pdfIn PDF document text
    • http://cuboni.com/uploadfile/hong202202262028545820.pdfIn PDF document text
    • http://uhorder.com/upload/files/fadanebosiv.pdfIn PDF document text
    • http://eigo-manabo.com/app/webroot/js/kcfinder/upload/files/viditilanogaxikuruzajija.pdfIn PDF document text
    • https://feltshoe.com/userfiles/file/raguladudasogixunibixu.pdfIn PDF document text
    • https://thuaphatlaihoanghuy.com/uploads/files/99018405875.pdfIn PDF document text
    • http://dichvugiayphep.net/hinhanh_fckeditor/file/nogipilewalebuk.pdfIn PDF document text
    • http://gorisum.net/fckeditor/upload_file/file/65914957533.pdfIn PDF document text
    • https://jaurrieta.net/USERFILES_JAURRIETA/files/kogowaturupa.pdfIn PDF document text
    • https://photojet.bg/userfiles/file/dirozoresapigusajixit.pdfIn PDF document text
    • https://www.centralleiloes.com.br/admincentral/ckeditor/kcfinder/upload/files/mekamapizelase.pdfIn PDF document text
    • https://littleitalypizzany.com/nbloom/fckuploads/file/wefafekujelavewowa.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1622ab1d319985---56190148923.pdfIn PDF document text
    • https://www.campacinter.com/image/upload/File/47748414103.pdfIn PDF document text
    • http://shbaicun.com/userfiles/file/2022020402021673499.pdfIn PDF document text
    • http://www.horakgolf.cz/ckfinder/userfiles/files/14934081902.pdfIn PDF document text
    • http://stlukesfp.org/ckfinder/userfiles/files/tisanavateninojilubivomub.pdfIn PDF document text
    • https://unecol.com/uploads/kcfinder/upload/files/luxonanawedumorin.pdfIn PDF document text
    • https://supratrend.hu/images/fck/files/17075320455.pdfIn PDF document text
    • http://555banket.ru/kcfinder/upload/files/koxelepojitewekokin.pdfIn PDF document text
    • https://businesslife.com/content/file/93736638563.pdfIn PDF document text
    • https://kalatranslation.co.uk/wp-content/plugins/super-forms/uploads/php/files/a2ba63j54qtlbvn83tdfu7j3nr/bawexif.pdfIn PDF document text
    • http://location-en-guadeloupe.com/js/kcfinder/upload/files/moxiwikikenogom.pdfIn PDF document text
    • https://kupro.bg/upload/wyswyg/files/77312242088.pdfIn PDF document text
    • https://war-old.its.vn/new/userfiles/file/43697211746.pdfIn PDF document text
    • http://mayepnuocmia.vn/data/ckfinder/files/53542025048.pdfIn PDF document text
    • https://elperrocallejero.info/ckfinder/files/28398703879.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_off0006e1f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E1F5 20316 bytes
SHA-256: e88d80df4e6c5227f40660b6c440400f31d8f33639c40746d6cf41ec1e5f7155
font_01_sfnt_off00071594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71594 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off00072cb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72CB4 10800 bytes
SHA-256: 680b7e360929e7dade086b55b0a79fbfbd24b228f39b3fdbfc705a08db08e416