Malicious PDF — malware analysis report

Static analysis result for SHA-256 552eb40383b63a38…

MALICIOUS

PDF

75.3 KB Created: 2021-11-23 12:26:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-19
MD5: f5307aeb77d00d57942cd6acb8b9f562 SHA-1: a6990764962a6baa429651135359624e4fbd5cb5 SHA-256: 552eb40383b63a3878aaf6c8545d4814850c951930874aefcd6773d2b36f366f
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. 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 http://obraz-tlt.ru/userfiles/file/zivivowodofabajapupiz.pdf In PDF document text
    • https://kayakbranson.com/wp-content/plugins/formcraft/file-upload/server/content/files/16175f3f5239f5---bemegopumozopadurikavipig.pdfIn PDF document text
    • http://peak-experience-japan.fr/images/blog/file/wisofotidiraxawi.pdfIn PDF document text
    • http://z-i-f.ru/userfiles/file/wepiwigudipefivonafik.pdfIn PDF document text
    • https://mongolia-volkslift.com/uploads/files/tefisilemodatavoda.pdfIn PDF document text
    • https://cplastik.net/data/cms/file/45681636439.pdfIn PDF document text
    • http://www.hangmandigital.com/files/file/bufedamajapivuzuniratuvat.pdfIn PDF document text
    • https://sentinels.ro/userfiles/file/silemagubafapabuder.pdfIn PDF document text
    • http://jingkangchem.com/upload/files/xukumotixifagevijepabasix.pdfIn PDF document text
    • https://mpressivelabels.com.au/application/third_party/ckfinder/userfiles/files/40980725019.pdfIn PDF document text
    • http://2ruoteexpo.it/ckfinder/userfiles/files/riwokolobinisijarozazeg.pdfIn PDF document text
    • https://homeaestheticsllc.com/wp-content/plugins/super-forms/uploads/php/files/ff891152c10ca381abb4424f21d25c41/kanulomanozepakipi.pdfIn PDF document text
    • https://daqing-jewelry.com/uploads/files/202110300531521118.pdfIn PDF document text
    • http://awards.nl/img/cms/file/62416460334.pdfIn PDF document text
    • http://stmarysharipad.com/userfiles/file/53193603741.pdfIn PDF document text
    • https://eyetracking.pl/userfiles/file/82259530374.pdfIn PDF document text
    • http://ecohost.ru/pics/images/file/53802870079.pdfIn PDF document text
    • http://naturestuff.nl/siteimages/file/nezarimukewalefejetu.pdfIn PDF document text
    • https://indiantalentjunction.com/milan/media/12651387762.pdfIn PDF document text
    • https://garnet-medical.com/userfiles/files/kogidokuvig.pdfIn PDF document text
    • https://www.infratechgroep.nl/wp-content/plugins/super-forms/uploads/php/files/3d63c2610f8b250287e76601a78bbba7/11855070281.pdfIn PDF document text
    • https://alharithiforcameras.com/ckfinder/userfiles/files/rogesiv.pdfIn PDF document text
    • http://osmed.cz/app/webroot/files/files/xexosarurusu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/oscUj7J0Gjw/uplcv?utm_term=socialism+utopian+and+scientific+study+guidePDF 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_off0000c010.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c010.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c010.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC010 17920 bytes
SHA-256: aac7b3ed11768f6cf4040bd3dc24fd8a8243bb1c63229379bc5bcd27b132bebf
font_01_sfnt_off0000eef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEF8 11152 bytes
SHA-256: 020f75715061d2cee49b0fcf04e67139f5d90b6628ab76939f707238573270ca
font_02_sfnt_off000108d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108D9 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336