Malicious PDF — malware analysis report

Static analysis result for SHA-256 d079a96750bb5330…

MALICIOUS

PDF

211.8 KB Created: 2022-03-19 21:47:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-07
MD5: 4224a28c641c4681184fd343c8be5fe2 SHA-1: 0fec39f2dc5b66a04a9ee5e4b2e206a4ec9b1b70 SHA-256: d079a96750bb53308a0eb99156fecbb7946541da2b04ccaa432636e2661d5d88
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple embedded URLs and a lure related to academic materials, indicating a phishing attempt. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to redirect users to compromised sites or download further payloads. The presence of external URIs and a link farm pointing to compromised CMS uploads reinforces the phishing and potential malware distribution vector.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9483

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://norin.co.za/XSRYdR1H?utm_term=cdac+model+question+paper+with+answers+pdf PDF link annotation
    • http://conserviabd.com/assets/ckeditor/kcfinder/upload/files/97969036271.pdfIn PDF document text
    • http://kydceramics.com/upload/userfiles/files/pupepigizimex.pdfIn PDF document text
    • http://invenger.net/admin/ckeditor/kcfinder/upload/files/babojepalutudulova.pdfIn PDF document text
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/1623376c5b3c2f---11142894339.pdfIn PDF document text
    • http://flussobjekte.at/kcfinder/upload/files/zuxerufinebikuka.pdfIn PDF document text
    • https://vasekupony.sk/jsc/kcfinder/upload/files/dawevifot.pdfIn PDF document text
    • http://scouttautomotive.com/editor_uploads/system/files/31896180688.pdfIn PDF document text
    • http://spy-military-labs.com/userfiles/file/namabejazemiw.pdfIn PDF document text
    • http://yachtales.net/admin/userfiles/files/zidijedobuvusokizelawib.pdfIn PDF document text
    • http://sparan-art.ru/ckfinder/userfiles/files/motowozigowolosawavada.pdfIn PDF document text
    • http://uktohabbarijamalta.com/files/file/30475420724.pdfIn PDF document text
    • https://kottayammedicalcollege.org/CMS/ckfinder/userfiles/files/59642090080.pdfIn PDF document text
    • http://marketingnews.fr/images/file/73919762822.pdfIn PDF document text
    • https://resonanceacteurs.nl/userfiles/file/33929650845.pdfIn PDF document text
    • http://bobmeetin.com/media/galleries/files/68213733151.pdfIn PDF document text
    • https://lotte-ppta.com/beta/assets/file/petibu.pdfIn PDF document text
    • http://net-marketing.hu/images/files/lopunanofozopafiputimu.pdfIn PDF document text
    • https://garnet-medical.com/userfiles/files/wapudupum.pdfIn PDF document text
    • http://synthecinter.com/userfiles/files/49797586230.pdfIn PDF document text
    • http://pngroup.pl/ckfinder/userfiles/files/kusidolamesixax.pdfIn PDF document text
    • https://www.democratum.com/wp-content/plugins/super-forms/uploads/php/files/6fe961b922f9cc31b1256faa612d121f/80916955599.pdfIn PDF document text
    • https://tennis-samara.ru/img/file/giwezewivujib.pdfIn PDF document text
    • http://idroter.org/userfiles/files/fuzavitudivilinonexeb.pdfIn PDF document text
    • http://dietetyka-24.pl/images/files/nipumefeviz.pdfIn PDF document text
    • http://amis-simserhof.fr/kcfinder/upload/files/36719713763.pdfIn PDF document text
    • http://machulski.com/public/file/dejep.pdfIn PDF document text
    • http://tt-ural.su/admin/ckfinder/userfiles/files/16538209359.pdfIn PDF document text
    • http://talcmanagement.com/uploaded_files/userfiles/files/34799547047.pdfIn PDF document text
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/f0lg11dmtlc5lpofe863l6kfvd/64733932788.pdfIn PDF document text
    • http://blagoveshhensk.torbay.ru/images/uploads/file/basuregut.pdfIn PDF document text
    • https://ladangmimpi2.com/contents/files/91919364513.pdfIn PDF document text
    • http://alkanboya.com/files/file///tefawodejufugasawomugonad.pdfIn PDF document text
    • http://tradotel-riviera.com/file/mewakug.pdfIn PDF document text
    • https://starfoil-mail.nl/uploads/wysiwyg/24964777360.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_off0002df2e.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0002df2e.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002df2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DF2E 18132 bytes
SHA-256: b9c053085697fea60f25cdf43eb0c2ee980830f82fa823353a2904d9af8d507f
font_01_sfnt_off00030e7d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30E7D 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0003259d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3259D 11248 bytes
SHA-256: e90407f29c80468a04a9c1007c369cd986c62ec4c85dc2ee6adfd8a0f01a32c3