Malicious PDF — malware analysis report

Static analysis result for SHA-256 550c6da1967ec182…

MALICIOUS

PDF

272.6 KB Created: 2022-03-06 05:02:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-04
MD5: a65222072d38fe334a2a7aa6e3bf28f0 SHA-1: 22ba19910f403d7266ed64d36fef8a0d833aa336 SHA-256: 550c6da1967ec182fe16543a4990d9e584c65e8f4883e4f269a0b3c64b0f1f3b
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6460

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://daynexweb.com/upload/ckfinder/files/52425805956.pdf In PDF document text
    • http://lehoangcctv.com/ckeditor/kcfinder/upload/files/lejidezimigalagukim.pdfIn PDF document text
    • http://fishtech.org/uploads/userfiles/file/file/34366473751.pdfIn PDF document text
    • http://stihoplet.by/upload/editor/files/noduburazawasur.pdfIn PDF document text
    • http://ineke-ott.nl/keramiek-beelden-imagesfile/bifuxijisuginonapif.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/1621aa1457e580---96446106253.pdfIn PDF document text
    • http://bausite.ru/userfiles/files/87459119609.pdfIn PDF document text
    • http://chianchang.yun2u.com/upload/files/tajofola.pdfIn PDF document text
    • http://www.ddu-hk.cz/ckfinder/userfiles/files/rigokudaf.pdfIn PDF document text
    • https://kientrucmoi.com.vn/admin/kcfinder/upload/files/91150252118.pdfIn PDF document text
    • http://theemasternetworker.com/ckfinder/userfiles/files/niwekorop.pdfIn PDF document text
    • http://wangguanhardware.com/userfiles/file/1892272083.pdfIn PDF document text
    • http://actionelectric.pt/www/wp-content/plugins/formcraft/file-upload/server/content/files/162234188ca88d---jenavikoxo.pdfIn PDF document text
    • http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/162091d97d86c6---71633276894.pdfIn PDF document text
    • http://xingyeknitting.com/userfiles/files/27119990892.pdfIn PDF document text
    • http://datacomsystems.cz/userfiles/file/bebawin.pdfIn PDF document text
    • https://n-vv.dk/userfiles/file/69944557833.pdfIn PDF document text
    • https://bk.knu.ac.kr/ckfinder/userfiles/files/72757400572.pdfIn PDF document text
    • http://www.leposeur.fr/site/upload/ckfinder/files/77338768604.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/16215531e378a9---vixezator.pdfIn PDF document text
    • https://uat-tunisia.com/userfiles/file/44044259319.pdfIn PDF document text
    • http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/b57b2492f339db8cd27a8da41c439bb7/29484047716.pdfIn PDF document text
    • https://maftplayer.net/calisma2/files/uploads/nezebunodanatekikixujotev.pdfIn PDF document text
    • http://tua-hatextiles.com/assets/ckeditor/kcfinder/upload/files/newipufajuputimafadimel.pdfIn PDF document text
    • http://rcchoir.nl/upload/files/18680326997.pdfIn PDF document text
    • https://alusol-kw.com/ckfinder/userfiles/files/76526593069.pdfIn PDF document text
    • https://dutchhaves.com/uploads/files/202202120450063101.pdfIn PDF document text
    • https://www.hauptsache.cc/wp-content/plugins/formcraft/file-upload/server/content/files/162086de331677---2193468857.pdfIn PDF document text
    • https://kingdom.vn/userfiles/file/7901912759.pdfIn PDF document text
    • https://laval.gatr.ca/img/etablissements/files/21479790096.pdfIn PDF document text
    • https://mifuj.co.za/XSRYdR1H?utm_term=avast+full+crack+for+windows+10PDF 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_off0003ae78.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0003ae78.bin)

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0003ae78.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3AE78 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0003c598.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3C598 10836 bytes
SHA-256: 5879362038bf2b4a0f837a15f711be759ed89e968c9d5f27c814e1482b4ac161
font_02_sfnt_off0003dede.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3DEDE 16276 bytes
SHA-256: abf95fb62c40432fd760fa620ff9f295d6b22296a3082f5d0a8e25644338e0e9
font_03_sfnt_off0003f4a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3F4A3 26816 bytes
SHA-256: ae2924421c8cad0433749fec6929ecdbaaa3e3011f98b9a6ce4bb24ac77f6f77