Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa879877496aafa1…

MALICIOUS

PDF

295.8 KB Created: 2022-01-25 23:53:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-07
MD5: 7b91ce3c42385fc7967528c6a19439b0 SHA-1: 177fd68dc53405189aaeeef6b2c4c55bac37e427 SHA-256: aa879877496aafa10206e05f095a1d886e23a3c634da82d720d4f954d795c4d0
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7754

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://sunuf.co.za/XSRYdR1H?utm_term=restaurant+guide+michelin+loir+et+cher PDF link annotation
    • http://kmkonsult.cz/userfiles/file/61615188584.pdfIn PDF document text
    • http://ellev.fr/upload/files/26547777781.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/38ee0bac1d103daffa8e0daa8a53f791/10902316476.pdfIn PDF document text
    • http://www.americandartsmadrid.com/kcfinder/upload/files/74060869688.pdfIn PDF document text
    • https://subarini.ro/mm/file/kikazanajiveba.pdfIn PDF document text
    • http://frederickfollows.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161b1c7a8dcecc---favikiwofekosodal.pdfIn PDF document text
    • http://e-menu.hu/editor_up/felupobemopin.pdfIn PDF document text
    • http://xn--80aafbladvtgxneccoge3bt.xn--p1ai/pict/file/zetawamaluvijewazevo.pdfIn PDF document text
    • http://urbanconstructions.org/images/uploadedimages/file/pejukulet.pdfIn PDF document text
    • http://capitolmetrophysicaltherapy.com/userfiles/file/66660600024.pdfIn PDF document text
    • http://www.mbk-montage.nl/ckfinder/userfiles/files/ledikedepapiwufa.pdfIn PDF document text
    • http://clevio.biz/fckUpload/file/26225773719.pdfIn PDF document text
    • https://stpm-sa.com/userfiles/file/80946410333.pdfIn PDF document text
    • http://knuhpharm.kr/userfiles/file/20211114170526.pdfIn PDF document text
    • https://celovechurch.org/wp-content/plugins/super-forms/uploads/php/files/0868d6f69a685cc2eb2eaa1bb7a175ac/dopulowoguwubiwes.pdfIn PDF document text
    • http://www.sircom.org.br/tools/includes/kcfinder/upload/files/64745844548.pdfIn PDF document text
    • http://cu-hinothai.com/ckfinder/userfiles/files/pimago.pdfIn PDF document text
    • http://paroissedementon.fr/upload/files/vivopewujotafizuvojikema.pdfIn PDF document text
    • https://pqclass.kr/imgs/file/48398768684.pdfIn PDF document text
    • https://stichtingech.org/ckfinder/userfiles/files/baxebi.pdfIn PDF document text
    • https://rent-1.es/ckfinder/userfiles/files/kofuzasubebolowikoge.pdfIn PDF document text
    • http://www.scea.edu.mn/ckfinder/userfiles/files/garedibak.pdfIn PDF document text
    • http://rustproofingottawa.com/userfiles/file/35495648470.pdfIn PDF document text
    • https://apexsafetyproducts.com/ckfinder/userfiles/files/batimekobaxuguwulu.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_off00042fad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42FAD 10964 bytes
SHA-256: 8281466addf1f8805bee1d4f58203dcf1febc6eaf692213ba474d93914841513
font_01_sfnt_off000448b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x448B6 18932 bytes
SHA-256: 7b1262ada7b7aa65d77fed610ebe211a985989db67ff8266374d2cc0ecb886bd
font_02_sfnt_off0004783b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4783B 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336