Malicious PDF — malware analysis report

Static analysis result for SHA-256 1dcef92773dbe781…

MALICIOUS

PDF

368.6 KB Created: 2022-03-10 05:14:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-30
MD5: 1b172d0e3fc77b7b20447fcefd87bc6e SHA-1: e81b95a70629ba4f04ba387f7b8788c664434514 SHA-256: 1dcef92773dbe781face202dd07afdc56f21422952c97c61f7ddfcde930533bf
160 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4784

Heuristics 9

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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.
  • JavaScript action low 1 related finding PDF_JAVASCRIPT
    PDF contains a /JavaScript action. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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.
  • SEO-redirector lure link (multi-word utm_term) low PDF_SEO_UTM_REDIRECTOR_LINK
    PDF contains a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the search-keyword gateway used by the 'free document download' phishing family. Surfaced as an IOC; on its own this is a low-confidence signal.
  • 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://yubit.co.za/XSRYdR1H?utm_term=teamviewer+9++for+android+mobile PDF link annotation
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/161fb061fa5230---26362685608.pdfIn PDF document text
    • http://www.majoriscambio.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1620fa82461870---wikibakib.pdfIn PDF document text
    • https://apsco.ly/userfiles/files/63224494512.pdfIn PDF document text
    • http://konakelektrik.com/userfiles/file/36916637276.pdfIn PDF document text
    • https://iqmuseum.mn/uploads/files/nutasa.pdfIn PDF document text
    • http://kstarsmall.net/userfiles/file///96515125842.pdfIn PDF document text
    • https://kvartira-zalog.ru/wp-content/plugins/super-forms/uploads/php/files/8ee47ca1b35c4144ea408319be2b00ad/17322258645.pdfIn PDF document text
    • http://cephedanismani.com/images/pages/file/84050188102.pdfIn PDF document text
    • https://www.nutfruit.org/js/admin/ckeditor/plugins/kcfinder/upload/files/vufokaforilomadabadukonup.pdfIn PDF document text
    • http://colfacor.org.ar/administrador_web/kcfinder/upload/files/44126159464.pdfIn PDF document text
    • http://emotionpicturesfestival.gr/userfiles/file/teziruxa.pdfIn PDF document text
    • http://chmer.yun2u.com/upload/files/17638344211.pdfIn PDF document text
    • http://hardevel.com/data/files/39262218686.pdfIn PDF document text
    • http://studiotecnicopinto.it/userfiles/files/75818946842.pdfIn PDF document text
    • http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/451d781ae355e415ae4f8aff1544d780/98414958333.pdfIn PDF document text
    • http://astmasme.com/userData/board/file/wutajogarofowubote.pdfIn PDF document text
    • http://test.currentaffairsfunda.com/assets/kcfinder/upload/files/bijadomogemisi.pdfIn PDF document text
    • http://fundacjaproartis.pl/javascript/ckfinder/userfiles/files/32744331106.pdfIn PDF document text
    • https://mvmdigital.gr/files/files/48148416258.pdfIn PDF document text
    • http://newkontakt.ru/userfiles/images/file/gulotoxovameb.pdfIn PDF document text
    • http://gameometria.com/assets/ckfinder/core/connector/php/uploads/files/14518306741.pdfIn PDF document text
    • http://style4.allwebeasy.com/userfiles/files/livoser.pdfIn PDF document text
    • http://nassagroup.org/app/webroot/js/ckfinder/userfiles/files/miwika.pdfIn PDF document text
    • http://studiorumeo.it/userfiles/files/53301584849.pdfIn PDF document text
    • http://gira-classix.su/kcfinder/upload/files/62472869103.pdfIn PDF document text
    • http://perfecturology.cafe24.com/upload/editor/imagefile/kafulefuvokelulewugukuw.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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0004f497.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F497 20892 bytes
SHA-256: 31e9825596ae72a30a68e646701edfa6ebb41afda6f560f6528bd207a931328a
font_01_sfnt_off00052a97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x52A97 10672 bytes
SHA-256: c4558491d9b2e83689484fe08e67c8d9ffb47f7a3bfe2e02a1d566f6fec2581b
font_02_sfnt_off0005430c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5430C 16508 bytes
SHA-256: 1870e766dd4f1ce482204ee3f7f47192c98613af5c5e3aa7157d6c48cc49d620
font_03_sfnt_off00055993.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x55993 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_04_sfnt_off000570aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x570AA 22124 bytes
SHA-256: 0f540998d65eb7ad141da6c55e12145efc1972e61a8513b93200f19e8dc99ee8