Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa809d897eacd840…

MALICIOUS

PDF

509.0 KB Created: 2022-02-26 12:35:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-06
MD5: 3c1e297d8f3778de96387867436a8797 SHA-1: 126483aa3bcc8fec83fa219a96ef87e957e8330f SHA-256: aa809d897eacd8409aa3628b371be2dafd97d2af40a4478bf19bcaf0051335c1
144 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4857

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://yoyep.co.za/XSRYdR1H?utm_term=hepatitis+c+guidelines+easl+2018 PDF link annotation
    • http://due.pt/js/ckfinder/userfiles/files/47203791471.pdfIn PDF document text
    • http://studiolegaletrotta.eu/userfiles/files/24957432252.pdfIn PDF document text
    • http://drumlockingclamp.com/FCK_Editor_Images/files/7406482785.pdfIn PDF document text
    • http://lngpetro.com/userfiles/file/28670698097.pdfIn PDF document text
    • http://sourceandsecure.com/uploads/userfiles/file/13107114250.pdfIn PDF document text
    • http://www.argentum.com/wp-content/plugins/super-forms/uploads/php/files/ciu52s3t93hek2m89d532o83n3/4071586550.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fbcc030f7c6---mevewijesuwenizotisi.pdfIn PDF document text
    • http://szentdorottyapatika.hu/files/lewubezetuwivagokojuwife.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/ee0b9hc71p8v3lvl2iop6geabl/99891809598.pdfIn PDF document text
    • http://vantaidongsaigon.com/uploads/files/12783671145.pdfIn PDF document text
    • https://www.tocarufar.com/sgc/Assets/Plugins/CKEditor/kcfinder/Uploads/files/jevoloku.pdfIn PDF document text
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161173d22df690---13116996965.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/6a4b50tiepm7jddhoidc3nj3uq/98518932602.pdfIn PDF document text
    • https://ratco-hardware.com/Ups/files/mazimifavekegot.pdfIn PDF document text
    • https://kaimano.it/file/64581099635.pdfIn PDF document text
    • http://xn--80affcyoc0ac1f6a.xn--p1ai/admin/modules/ckeditor/ckfinder/userfiles/files/15275013110.pdfIn PDF document text
    • http://trongtinpc.com/luutru/files/lafezimimunop.pdfIn PDF document text
    • http://5lovestartw.com/CKEdit/upload/files/45438946624.pdfIn PDF document text
    • https://xpress2.eu/ckfinder/userfiles/files/wogedujumokefokez.pdfIn PDF document text
    • http://controlsystemco.com/cache/fck_files/file/1746147849.pdfIn PDF document text
    • http://tamlaproject.com/userData/board/file/69164816749.pdfIn PDF document text
    • http://fmafirm.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/69132685419.pdfIn PDF document text
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/9816c5e1b80345b03adfb92777cf62e3/36743640391.pdfIn PDF document text
    • http://www.thelawchamber.com/wp-content/plugins/formcraft/file-upload/server/content/files/162149e89e1a1f---13633101804.pdfIn PDF document text
    • http://duancanhotot.com/upload/files/pineroluxidavepeturi.pdfIn PDF document text
    • https://mobiligennari.com/userfiles/file/38711680709.pdfIn PDF document text
    • https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/naj017ubs5brg3uu39uc13n155/warutaraleboseromonedonu.pdfIn PDF document text
    • https://fulzugaskozpont.hu/files/39413010457.pdfIn PDF document text
    • http://mazurubezpieczenia.pl/zdjecia/fck/file/tuwefoxelerasojum.pdfIn PDF document text
    • http://energo-winstal.pl/userfiles/file/72608667585.pdfIn PDF document text
    • http://darshanam.com/ckfinder/userfiles/files/75117613603.pdfIn PDF document text
    • https://drlalashow.com/php/billboard/uploads/file/59772225266.pdfIn PDF document text
    • http://goldenagegroup.vip/userfiles/file/soziwajupojefami.pdfIn PDF document text
    • https://otoform.com/upload/ckfinder/files/nazeti.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_off00078238.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78238 11060 bytes
SHA-256: 4b2c7adad757daff87567b513fb613e3a3f921d417bbed075245759a62939487
font_01_sfnt_off00079bef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79BEF 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_02_sfnt_off0007b30a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7B30A 18704 bytes
SHA-256: 84bcc8c704c61d87642392c39c0f18212e7353b39a9287d5e0f3b7f72b148ece