Malicious PDF — malware analysis report

Static analysis result for SHA-256 fb0cb77b81b3ca06…

MALICIOUS

PDF

253.3 KB Created: 2022-03-04 07:25:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-04
MD5: 746b46766c7f1e8f0b6f323b3d28372b SHA-1: 8b3b0db48e2ed5b50338caca8936319a669fe215 SHA-256: fb0cb77b81b3ca06d82374fa712ecb79d58c3678411808e287e86779eb16b184
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7338

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://bbcodex.com/kcfinder/upload/files/94979167616.pdf In PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/162218ce0129e3---9450883188.pdfIn PDF document text
    • http://amicalelaique-guyancourt.fr/ckfinder/userfiles/files/vokekatutijuxo.pdfIn PDF document text
    • http://cuacuongiare.vn/upload/files/95660052124.pdfIn PDF document text
    • https://www.intermediastudios.com.mx/wp-content/plugins/super-forms/uploads/php/files/e1e7db546c07eaf7c307cfb2e721c37e/nofufekebakanosisabe.pdfIn PDF document text
    • http://seteo-dechets.com/images/file/94842838561.pdfIn PDF document text
    • https://dioss.eu/files/ckfiles/file/giremewasudu.pdfIn PDF document text
    • http://elesi.eu/fichiers/files/reperuzodejupik.pdfIn PDF document text
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/1620a50f24f5bd---bufevagakelunojavupusa.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/o4uao86bm82c91g91ehi5hsetl/72899113294.pdfIn PDF document text
    • http://vroa.pl/chplusfiles/file/20680954099.pdfIn PDF document text
    • http://gorod-r.com/userfiles/file/soxop.pdfIn PDF document text
    • https://zagladaold.holocaustresearch.pl/nowy/photo/file/suliferoworeri.pdfIn PDF document text
    • https://pierreseche.fr/userfiles/file/sajurimofonozagi.pdfIn PDF document text
    • https://abisspaandboutique.com/nbloom/fckuploads/file/zigimimotatuve.pdfIn PDF document text
    • http://vinhomeshaiphong.net/app/webroot/img/files/jafom.pdfIn PDF document text
    • http://plise.org/userfiles/file/88397367074.pdfIn PDF document text
    • https://www.antoniopopolizio.it/ckfinder/userfiles/files/mokasole.pdfIn PDF document text
    • https://loppisidjupdalen.se/images/uploaded/file/nereredi.pdfIn PDF document text
    • http://vertex-decor.com/userfiles/file/27596418767.pdfIn PDF document text
    • http://valleytechltd.com/assets/ckeditor/kcfinder/upload/files/31699277112.pdfIn PDF document text
    • http://elskenecologie.nl/files/67451463103.pdfIn PDF document text
    • http://pead.org.bd/assets/ckeditor/kcfinder/upload/files/gasijeporulogodonadovidug.pdfIn PDF document text
    • https://xn--fct8ml6mwue.tw/uploads/files/vutifesidux.pdfIn PDF document text
    • http://acetuitioncentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1620b061dc9675---67577870933.pdfIn PDF document text
    • https://balatonpremiumvillas.hu/webroot/upload/files/81216244764.pdfIn PDF document text
    • https://ventadeterrenosagricolas.com/userfiles/file/xitapomofojijubedixamud.pdfIn PDF document text
    • https://kinhdoanhvaphapluat.com/img-dn/files/begaluv.pdfIn PDF document text
    • http://test.currentaffairsfunda.com/assets/kcfinder/upload/files/67116445781.pdfIn PDF document text
    • http://kuzfarm.ru/images/file/nukidazo.pdfIn PDF document text
    • http://pelesiuvalymas.lt/i/File/19064254003.pdfIn PDF document text
    • https://pikhospital.com/ck_uploads/uploads/files/nifojatizexubuwidi.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/162111206b0c56---8321784497.pdfIn PDF document text
    • https://cafij.co.za/XSRYdR1H?utm_term=best+ecommerce+business+plan+templatePDF link annotation
    • 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_off000388b2.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off000388b2.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000388b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x388B2 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off00039fcd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39FCD 16928 bytes
SHA-256: b6f7e851b8e3331715c4b4ecfc3663fcb60c7fea23a55160b6364cad01eb3c8f
font_02_sfnt_off0003cbb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3CBB4 10828 bytes
SHA-256: c796c63ae26bed8429035b03ef53f46d90c46832b1cc274cc368fcc93160eae6