Malicious PDF — malware analysis report

Static analysis result for SHA-256 624ab37d35345e00…

MALICIOUS

PDF

77.1 KB Created: 2021-08-28 12:50:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-29
MD5: 9cc5abcc6473fa0e30d0450119f06566 SHA-1: 4cf133345646d3b632d8e41552fbea53b8da1534 SHA-256: 624ab37d35345e00f0b4ea8d58c486837332038402cd1292549ecef2126c65f4
164 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9908

Heuristics 7

  • 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.
  • 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.
  • 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://ferramentabelleggia.it/public/file/tusugifiduvotopuxemewude.pdf In PDF document text
    • https://action-roofing.com/wp-content/plugins/super-forms/uploads/php/files/e70b7cff6ae766f5edf53e989bf43e60/91232860704.pdfIn PDF document text
    • http://socialbomjesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a2400d57f41---jeruxefomajijeri.pdfIn PDF document text
    • http://speednewslive24.com/assets/ckfinder/core/connector/php/uploads/files/jasorowerozutobovutukog.pdfIn PDF document text
    • http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/1607ace38018c4---kujof.pdfIn PDF document text
    • https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/l3lqalu894v650d8e8ub2uuh68/fupuwuzimeg.pdfIn PDF document text
    • http://lawcab.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16070c72f59eca---xediro.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098a15dddf5b---viviburuzexata.pdfIn PDF document text
    • http://technocom.pl/editor/file/55259602694.pdfIn PDF document text
    • https://alianzatours.com/imagenes/file/xegilevuse.pdfIn PDF document text
    • https://www.nestroots.com/wp-content/plugins/super-forms/uploads/php/files/7f10meoc20ad879m1krqg1k9f2/67704806591.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/u2bfesvh78tcn42mktl8toq714/wuzosekeloki.pdfIn PDF document text
    • http://zonwering-belgie.nl/ckfinder/userfiles/files/gifoxipuwamamenevuro.pdfIn PDF document text
    • http://pettwayfamilyreunion.com/clients/39389/File/kuvujudisana.pdfIn PDF document text
    • https://www.travelknowhowscotland.co.uk/assets/js/ckfinder/userfiles/files/1412502438.pdfIn PDF document text
    • http://aliceinformaticasrl.com/user/pages/golajosowitexog.pdfIn PDF document text
    • http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb29ae5d64---defef.pdfIn PDF document text
    • http://grandchainfamilyfoundation.org/clients/85333/File/pelosonu.pdfIn PDF document text
    • http://fullx.net/files/binozifemikemuraw.pdfIn PDF document text
    • https://noriupapildu.lt/ckfinder/userfiles/files/72110366764.pdfIn PDF document text
    • http://lacasedescaraibes.fr/file/46236482800.pdfIn PDF document text
    • http://ssanadia.in/userfiles/file/matapabutijapizeguxigiwi.pdfIn PDF document text
    • http://www.suffaheducation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a09c6e20cf8---62347475744.pdfIn PDF document text
    • https://doxity.ro/ckfinder/userfiles/files/99784772859.pdfIn PDF document text
    • https://eslms.com/userfiles/file/muzasuzuwugibilisow.pdfIn PDF document text
    • http://df-2.de/images/daten/file/86090046517.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=toyota+sl3404d+differential+overlocker+manualPDF 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 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_off0000c65f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC65F 11344 bytes
SHA-256: 0c77bf75ce50414444ad5c91776d50ae4ac46ffb16fb5469d8277264c2681e2b
font_01_sfnt_off0000e131.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE131 17364 bytes
SHA-256: 8e498c7d401a1582903cc21d70866e1e3addb41338444393686f2cc98665e780
font_02_sfnt_off00010e2a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10E2A 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1