Malicious PDF — malware analysis report

Static analysis result for SHA-256 4af03ecdfd813a64…

MALICIOUS

PDF

374.4 KB Created: 2022-02-28 00:11:25 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 8ae5aa2f35b4927d7e66fb0855c737a5 SHA-1: 56bde0cee47956d7f7555af2a418741f1b37ca5b SHA-256: 4af03ecdfd813a64391230e95492a762db04a94e6f21449fee4f9718466712b5
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.5513

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://lazav.co.za/XSRYdR1H?utm_term=harvard+bibliography+format+generator PDF link annotation
    • http://busankid.com/webfiles/board/file///43738169608.pdfIn PDF document text
    • http://maybaobidinhdinh.com/upload/files/filiku.pdfIn PDF document text
    • http://domadoma.cz/userfiles/file/57404241451.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611652eb68dcc---22445060290.pdfIn PDF document text
    • http://hmed.vn/upload/files/nipipe.pdfIn PDF document text
    • https://feriaesotericadeatocha.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f581e346545---72099010531.pdfIn PDF document text
    • https://cincia.ro/ckfinder/userfiles/files/33889006316.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160fe610b7cb5b---miwejinasozanowixi.pdfIn PDF document text
    • https://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612e8744362ea---naluporenovodunigovade.pdfIn PDF document text
    • http://m2m2design.com/userfiles/duwezamotemuliwerume.pdfIn PDF document text
    • https://abouelhoulgroup.com/userfiles/files/kowipolimuza.pdfIn PDF document text
    • http://motopujcovnateplice.cz/userfiles/file/19462516922.pdfIn PDF document text
    • https://ysh.my/userfiles/file/vozex.pdfIn PDF document text
    • https://nocnepal.org.np/ckfinder/userfiles/files/daguzavuvizelaxopufuwopas.pdfIn PDF document text
    • https://thebottombillion.org/business_school/uploads/file/sojajisuvuzigegup.pdfIn PDF document text
    • http://shriadinathbank.com/uploads/8248934721.pdfIn PDF document text
    • https://dootion.com/data/attachment/file/doxomesapoxade.pdfIn PDF document text
    • http://cappellastudio.it/userfiles/files/86047178581.pdfIn PDF document text
    • http://bernardthevenet.fr/ckfinder/userfiles/files/mumubedugak.pdfIn PDF document text
    • http://podolsk-kondicionery.ru/upload_picture/file/66453894600.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/16162b872a2932---vubutubekojodibosazeji.pdfIn PDF document text
    • http://aranysolyomfeszke.hu/editor_up/83906201514.pdfIn PDF document text
    • https://alamansyria.com/userfiles/file/68513532235.pdfIn PDF document text
    • https://controlcert.se/wp-content/plugins/formcraft/file-upload/server/content/files/160df58b13e249---74884950853.pdfIn PDF document text
    • http://kancelaria-perfect.pl/app/webroot/media/files/47998191760.pdfIn PDF document text
    • http://fibertechnique.com/tmp/file/pivezixagu.pdfIn PDF document text
    • https://coebmsf.com/userfiles/file/34754751640.pdfIn PDF document text
    • http://tverzhilservis.ru/foktver.ru/ckfinder/userfiles/files/rorufisumu.pdfIn PDF document text
    • https://conviviodihera.it/dati/upload/file/nipibotosejatodiwoxof.pdfIn PDF document text
    • http://ontheedgeofnow.com/wp-content/plugins/formcraft/file-upload/server/content/files/162007a3b9a67b---vemimifopo.pdfIn PDF document text
    • https://sanidom.pl/img/file/zovesek.pdfIn PDF document text
    • http://warmistore.com/userfiles/file/58727055419.pdfIn PDF document text
    • http://didaconcept.com/admin/fckeditor/file/vetoluwelobelubuke.pdfIn PDF document text
    • https://www.nutfruit.org/js/admin/ckeditor/plugins/kcfinder/upload/files/mufilajaralibizopimudex.pdfIn PDF document text
    • https://rubenoferro.com/userfiles/file/28840033715.pdfIn PDF document text
    • http://elfast.ru/userfiles/file/53314642842.pdfIn PDF document text
    • https://nadamasristorante.it/file/25385891557.pdfIn PDF document text
    • http://girls-club.jp/app/webroot/js/kcfinder/upload/files/94655914179.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_off000569c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x569C7 18228 bytes
SHA-256: 07da0868c7741b672e48d570147b125099717ed555a6bbf293db9bb7d2e74401
font_01_sfnt_off00059926.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59926 11088 bytes
SHA-256: 9a2877b2edb4ec705a00b20163162d92c2d1b732a9ebd8c56ba44b0df2fe2984
font_02_sfnt_off0005b255.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B255 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9