Malicious PDF — malware analysis report

Static analysis result for SHA-256 87556dddbb11b805…

MALICIOUS

PDF

74.6 KB Created: 2022-04-14 11:45:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-04
MD5: 3de22b763aeb8d7f73f8104b93603d49 SHA-1: dcd5743264e102f72d06deb3bdf300991cc6aacd SHA-256: 87556dddbb11b805a3f1384db1ae6c2007fe4d8628e249d1bad918f1e1ffb2d8
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://fecuq.co.za/YmrXLWy8?keyword=delonghi%20pinguino%20pac%20cn120e%20troubleshooting PDF link annotation
    • http://kleinschaden.expert/userfiles/file/44011462750.pdfIn PDF document text
    • http://korvet-sp.ru/userfiles/file/zoxujusejikikiw.pdfIn PDF document text
    • http://cantinachitarra.it/userfiles/file/mosuxizomireladed.pdfIn PDF document text
    • http://bitvimex.com/kcfinder/upload/files/punujusabupatobalabelej.pdfIn PDF document text
    • http://espwireless.net/uploads/file/vikititesokipagumujifu.pdfIn PDF document text
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/162371e2a07d88---85279490999.pdfIn PDF document text
    • http://daindnc.com/fckeditor/userfiles/file/50201850503.pdfIn PDF document text
    • http://generaltubi.com/container/ckfiles/files/mefogetexovijuposodajarip.pdfIn PDF document text
    • https://artofsurfing.com/preview/ckfinder/userfiles/files/73024174410.pdfIn PDF document text
    • https://dfa-finanz.de/wp-content/plugins/formcraft/file-upload/server/content/files/1621f7863c5e3d---65417884747.pdfIn PDF document text
    • http://pierrevillers.fr/mairie_files/file/manazij.pdfIn PDF document text
    • http://www.zssever.cz/admin/ckeditor/kcfinder/upload/files/79535382584.pdfIn PDF document text
    • http://intimatehotelpattaya.com/image/upload/File/27127367526.pdfIn PDF document text
    • https://rubfila.in/files/file/732690766.pdfIn PDF document text
    • https://ip-kamera-rendszer.nuttydog.hu/ckfinder/userfiles/files/pesagakivejawefelojomo.pdfIn PDF document text
    • https://www.kazaviaspas.kz/app/webroot/js/kcfinder/upload/files/rukative.pdfIn PDF document text
    • http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/16201ee7f81bd1---88184218576.pdfIn PDF document text
    • https://viadagio.be/userfiles/file/ruxuvuzanimokoboges.pdfIn PDF document text
    • http://kindergartenhelden.at/upload/file/firaviwojupimexesabuti.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 extracted file (font_00_sfnt_off0000c041.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0000c041.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c041.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC041 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000d853.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD853 16412 bytes
SHA-256: 753e6ec278588f099ad1928474327913d5bb4ce63f5c6c433ad52f3b896eb11c
font_02_sfnt_off000102f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x102F2 11188 bytes
SHA-256: b2fd05bd1df6512816227e00d39799d1dce9d7bb4fc8543e60a5576000e168ab