Malicious PDF — malware analysis report

Static analysis result for SHA-256 1918b94ae5519fbd…

MALICIOUS

PDF

100.0 KB Created: 2022-02-26 21:51:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-22
MD5: a90f6dbb235ad39e57c6bbefc3523eda SHA-1: c7c137e397e23402de800d60f33c8ab8167ea71a SHA-256: 1918b94ae5519fbdf0fe17e8a363280eab3dd2529b99e1b4a8bd2a1ec0e17f54
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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 https://colod.co.za/XSRYdR1H?utm_term=windows+8+bootable+usb+maker+free PDF link annotation
    • http://dydlhx.com/upfiles/file///salanowov.pdfIn PDF document text
    • https://www.fsps.co.th/kcfinder/upload/files/kumatinadudolif.pdfIn PDF document text
    • https://somogyplusz.hu/files/vunakurinafaxubigibodo.pdfIn PDF document text
    • https://sv-fin.ru/wp-content/plugins/super-forms/uploads/php/files/9a2a9c6deb3b2f4cd796a4fece61ecac/939077006.pdfIn PDF document text
    • http://aerotechgroup.ru/img/outer/files/kunojowisavexet.pdfIn PDF document text
    • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/161153271135ef---59311310491.pdfIn PDF document text
    • http://yasaitogo.com/uploads/files/foketewabetu.pdfIn PDF document text
    • https://ngonluathan.vn/images/ckeditor/files/56551146930.pdfIn PDF document text
    • https://zagi.hr/files/gojojo.pdfIn PDF document text
    • http://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/16125dad2968ca---17300912456.pdfIn PDF document text
    • https://asoriofrio.org/ckfinder/userfiles/files/gurelokegaduwetawa.pdfIn PDF document text
    • http://assotechne.eu/userfiles/files/75475239865.pdfIn PDF document text
    • http://homeopathyhk.com/files/54784464602.pdfIn PDF document text
    • http://lahma.pl/_u/userfiles/file/98501141221.pdfIn PDF document text
    • http://fogathajtohirek.hu/fckfiles/file/57824658260.pdfIn PDF document text
    • http://geology.ie/wp-content/plugins/formcraft/file-upload/server/content/files/16142d8317ce37---somibigunotot.pdfIn PDF document text
    • http://www.motocams.cz/ckfinder/userfiles/files/61808135308.pdfIn PDF document text
    • https://thenovgorodspaceship.andreirozen.com/images/files/lakireniwebarazezipasu.pdfIn PDF document text
    • http://timapools.com/uploads/file/legesolux.pdfIn PDF document text
    • https://micro-churches.net/uploads/file/lotarulakivusufe.pdfIn PDF document text
    • http://didula.com/img/file/sosexodepon.pdfIn PDF document text
    • http://gennarimaq.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1620ac17a9d9b7---92404433727.pdfIn PDF document text
    • http://zonatourism.com/media/ck/files/71327402369.pdfIn PDF document text
    • http://elandtour.com/FileData/ckfinder/files/20211221_B85209BDE5C44F42.pdfIn PDF document text
    • http://nhuaduongnhapkhauaz.info/upload/files/72939153181.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011eb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11EB1 11136 bytes
SHA-256: f803a68e307799842c02b70567883978a6ef508d78673b7e57fc34df5cec7f63
font_01_sfnt_off000138b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138B9 18664 bytes
SHA-256: bf504662c2e3f116515983acd94836d85bc00cdbca3a211c6270a8423880c0f9
font_02_sfnt_off00016a11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16A11 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9