Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a117c1efdee552a…

MALICIOUS

PDF

80.5 KB Created: 2021-09-11 23:50:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-30
MD5: 4d11014a4d6f8da908011cf62e83940d SHA-1: 52e87b62b9e3ef955830c06caa3b8bc6b5ab8b13 SHA-256: 5a117c1efdee552ab3eac7b90864dbd9c9c0cb2e9149249711aad524e152bdd5
156 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9917

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://telekommarketing.com/firme_data/files/94012313100.pdf In PDF document text
    • http://pspectr.ru/userfiles/file/27489208418.pdfIn PDF document text
    • http://zenobiacultura.it/userfiles/file///55534971682.pdfIn PDF document text
    • http://beergolfers.com/blog/images/file/75484498093.pdfIn PDF document text
    • http://sacmacbook.net/userfiles/file/45788358877.pdfIn PDF document text
    • https://rescue.bg/wp-content/plugins/formcraft/file-upload/server/content/files/16131487c030c2---fifazutisarefej.pdfIn PDF document text
    • https://solarconsulting.org/wp-content/plugins/super-forms/uploads/php/files/03fb907b61c55f70b9ced2551722efa7/favobejugorubomejenavige.pdfIn PDF document text
    • http://retailpark.bg/uploads/wysiwyg/files/83545951286.pdfIn PDF document text
    • http://czminghe.com/upload/files/lavunujalemiso.pdfIn PDF document text
    • http://vpsystem.com/files/fck/94673962098.pdfIn PDF document text
    • http://mountmedpharmacy.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1613474e270f3e---bexafeme.pdfIn PDF document text
    • https://www.whoamiandwhyamihere.com/ckfinder/userfiles/files/44573225183.pdfIn PDF document text
    • http://smartpaintingplus.com/userfiles/files/21019842944.pdfIn PDF document text
    • http://novo-foto.ru/ckfinder/userfiles/files/35804856879.pdfIn PDF document text
    • https://oreopay57.com/ckfinder/userfiles/files/vexurazuriwekavagez.pdfIn PDF document text
    • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161370be07f180---32362408853.pdfIn PDF document text
    • https://www.mftelhas.com.br/adm/Editor/ckfinder/userfiles/files/11080752031.pdfIn PDF document text
    • http://nensi.si/upload/file/88871849740.pdfIn PDF document text
    • http://aimic.com/userfiles/file/nelikutemugu.pdfIn PDF document text
    • http://israel-aliya.com/wp-content/plugins/super-forms/uploads/php/files/38b17f567beccf1e6857de457f2481d2/14932743491.pdfIn PDF document text
    • http://phelieuviethung.vn/upload/files/8213532315.pdfIn PDF document text
    • https://xn----7sbbg1ddpkdc.xn--j1amh/uploads/files/minuxetisakisimoril.pdfIn PDF document text
    • http://scissortailfarms.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b1b6a7eebd---vojasavopibi.pdfIn PDF document text
    • http://zezoalza.com/ckupload/files/85505886119.pdfIn PDF document text
    • https://www.tahitotfalu.hu/ckfinder/userfiles/files/rewavovasokokoporazu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=cara+merubah+sistem+android+ke+iosPDF link annotation
    • https://rt9.rspo.org/ckfinder/userfiles/files/84173468188.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_off0000d880.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD880 16304 bytes
SHA-256: b4afaf0010ef12c15b1770a70487f5af0bfdc2edfd206e4c716a187a08508609
font_01_sfnt_off0001031a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1031A 10828 bytes
SHA-256: 10aa7cc87d6251bb1bc5ee52dd5164a12a12c2899be0469479c9503059ad8cbd
font_02_sfnt_off00011bea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BEA 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1