Malicious PDF — malware analysis report

Static analysis result for SHA-256 55041b07b16dc4aa…

MALICIOUS

PDF

207.4 KB Created: 2022-02-16 13:45:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-04
MD5: 7e12b149caba580055554503b90c1e09 SHA-1: ac0cab1be86387f2a061a2ba9b2d1afdbb7fe362 SHA-256: 55041b07b16dc4aa4164cc52d153a0c76b54d23f9cec988930c8ec6b2367cff6
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7780

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://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/b6bd811ce85cd163f86a14bd40cac17e/97572385465.pdf In PDF document text
    • http://sicompk.com/survey/userfiles/files/13865173904.pdfIn PDF document text
    • http://irfanmakina.com/depo/sayfaresim/file/46315404328.pdfIn PDF document text
    • https://brahmagnanam.org/fck_uploads/file/90428133163.pdfIn PDF document text
    • http://wuxihemei.com/ckfinder/userfiles/files/20210816_234649.pdfIn PDF document text
    • http://topliving.sk/userfiles/file/46365571947.pdfIn PDF document text
    • https://unityofmyanmar.org/images/files/15803984878.pdfIn PDF document text
    • http://buffagiuseppeinfissi.com/userfiles/files/19260422009.pdfIn PDF document text
    • http://afro-safari.com/upload/files/zezafov.pdfIn PDF document text
    • http://jjsgreatescape.com/uploaded_files/userfiles/files/7799823601.pdfIn PDF document text
    • http://mvpbuilding.com/userfiles/file/fizifedad.pdfIn PDF document text
    • https://cuichi177.com/uploads/files/202201130401463946.pdfIn PDF document text
    • https://www.uncme.org.br/Gerenciador/kcfinder/upload/files/nojisetini.pdfIn PDF document text
    • https://www.breastcancerfoundation.in/wp-content/plugins/super-forms/uploads/php/files/e18f5a8490dff771880da4a2679820cf/pebenilifevesoperipofog.pdfIn PDF document text
    • https://cristalparkhotel.com.ve/ckfinder/userfiles/files/23208327751.pdfIn PDF document text
    • https://soudureornementalelauziere.com/upload/editor/file/53952169932.pdfIn PDF document text
    • https://www.helpagesl.org/wp-content/plugins/formcraft/file-upload/server/content/files/1620b5a847d299---sufaralemapotaniritumesi.pdfIn PDF document text
    • http://zzzwchem.com/upload/files/51204777739.pdfIn PDF document text
    • http://vaithun.net/upload/files/16524866314.pdfIn PDF document text
    • https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/q6hjqb6oh6rra6cvn6d5fiv3d2/gamot.pdfIn PDF document text
    • https://israelonthehouse.com/wp-content/plugins/formcraft/file-upload/server/content/files/160fc8c433d34e---ruwovifatuzugagilax.pdfIn PDF document text
    • https://eitmedu.in/ckfinder/userfiles/files/55323594766.pdfIn PDF document text
    • http://metapolar.hu/tmp/9967374368.pdfIn PDF document text
    • http://www.salac.cz/ckfinder/userfiles/files/juserubom.pdfIn PDF document text
    • http://fitsiluet.cz/data/file/dekozegew.pdfIn PDF document text
    • http://car-zone.sk/data/data/file/makixibefozuken.pdfIn PDF document text
    • http://atad.ae/emanager/assets/ckeditor/plugins/kcfinder/upload/files/velivufudokidijurafod.pdfIn PDF document text
    • http://www.examnotice.in/uploads/files/vimaduboretidafe.pdfIn PDF document text
    • https://nedimgame.net/calisma2/files/uploads/nafiraredivuraroxexoxu.pdfIn PDF document text
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/161749352181f4---21586183408.pdfIn PDF document text
    • http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/1610d7bdf40bc7---sulideginafuwegi.pdfIn PDF document text
    • http://andezit-bg.com/files/59172503417.pdfIn PDF document text
    • http://premiercontractinginc.com/files/file/julizirira.pdfIn PDF document text
    • http://jjw-led.com/userfiles/file/65839285715.pdfIn PDF document text
    • http://ktimavoyatzi.gr/images/files/files/gijivubara.pdfIn PDF document text
    • https://jung.su/kcfinder/upload/files/fefabedulajufexifiratina.pdfIn PDF document text
    • https://hkki.org/userfiles/files/45308395063.pdfIn PDF document text
    • https://skinrepublic.vn/webroot/img/files/17788059856.pdfIn PDF document text
    • https://loheb.co.za/XSRYdR1H?utm_term=convert+ai+file+to+cdr+formatPDF link annotation
    • https://pecas.friparque.pt/userfiles/file/padebafedo.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_off0002cc6d.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0002cc6d.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002cc6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CC6D 19264 bytes
SHA-256: a0dfae6cc68bdcebf63b29013e0d2bf3a2192836c86db894c994a84305ad43e6
font_01_sfnt_off0002fe95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FE95 10568 bytes
SHA-256: a1cbff90f5026b3b6b07399f76b37c7af47b3e1157d5bcbe4943be614088ac92
font_02_sfnt_off000316ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x316BA 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9