Malicious PDF — malware analysis report

Static analysis result for SHA-256 552857959a57e03c…

MALICIOUS

PDF

111.2 KB Created: 2021-12-01 12:23:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-20
MD5: fdb87cdcba489e87ad86372a8d0a9ad1 SHA-1: b1e0b4431804e609d3633790e22185e1fab3dc4c SHA-256: 552857959a57e03c4c9ba4df0a0104b6fcea20e06bdbe246da0d2559fb078c36
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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://bowie.abwingsmd.com/uploads/files/38566623241.pdf In PDF document text
    • https://apz-arte.com/ckfinder/userfiles/files/pazanemepotujesupu.pdfIn PDF document text
    • https://feltshoe.com/userfiles/file/65585466559.pdfIn PDF document text
    • http://cappellastudio.it/userfiles/files/fepiriranaridis.pdfIn PDF document text
    • http://dezis.ru/uploads/files/fesomipisepumuzepugokilen.pdfIn PDF document text
    • https://www.grdr.org/paidel/ckfinder/userfiles/files/48668393266.pdfIn PDF document text
    • http://fialki.su/kufesifepexasurov.pdfIn PDF document text
    • http://supragyn.cz/userfiles/file/bigelefepibetukifojeso.pdfIn PDF document text
    • https://globalcareerclub.com/FCKeditor/userfiles/file/13655196789.pdfIn PDF document text
    • http://www.horakgolf.cz/ckfinder/userfiles/files/tanebijidamezefixevewobar.pdfIn PDF document text
    • http://videlec.be/ressource/file/39080303785.pdfIn PDF document text
    • http://sjzhtchem.com/upload/files/nekapazowebigaforidufakew.pdfIn PDF document text
    • https://incense888.com/uploads/files/202109080743395774.pdfIn PDF document text
    • https://advicezone.org.uk/wp-content/plugins/super-forms/uploads/php/files/h2ou2vt2nd85td8q4hd5ppp5jv/49266881461.pdfIn PDF document text
    • http://primethailand.com/ckfinder/userfiles/files/67441766199.pdfIn PDF document text
    • http://www.elsecretodelolivo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16168a7c596774---2241777819.pdfIn PDF document text
    • http://clinton.abwingsmd.com/uploads/files/63618008155.pdfIn PDF document text
    • http://akicgiyim.com/userfiles/file/40774969819.pdfIn PDF document text
    • http://nemdanangpho.com/uploads/2021-09-17/images/files/lajixexewin.pdfIn PDF document text
    • https://pachetedeturism.ro/images/files/kufivulimodotexiz.pdfIn PDF document text
    • http://sun-apartments.pl/data/pages/pevux.pdfIn PDF document text
    • http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/161a0ae5d37429---62584412779.pdfIn PDF document text
    • http://gpe-el.pro/ckfinder/userfiles/files/31833939153.pdfIn PDF document text
    • http://feedproxy.google.com/~r/Xvkpad/~3/TxADE9PCSUw/uplcv?utm_term=simple+request+letter+format+pdfPDF 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_off00015340.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off00015340.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00015340.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15340 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_01_sfnt_off000169df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x169DF 16728 bytes
SHA-256: 14a83c1eadd7339c49f6df60abeafb53aac01a95ae2277d3c0b37316deaac774
font_02_sfnt_off00019557.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x19557 10876 bytes
SHA-256: 21a96106e80255f1f1e6235eeace1bc460870093e88dcf3b268bef38b7e71f9d