Malicious PDF — malware analysis report

Static analysis result for SHA-256 65a2d3e310fa11c5…

MALICIOUS

PDF

101.0 KB Created: 2021-06-27 20:59:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 0df782009243f72d848d9e77eb150d16 SHA-1: 94f5c2edd66e69c3c82be3e334379640599d7e41 SHA-256: 65a2d3e310fa11c53f2f8a4a501a763b20bae68626f89de63379ccba88f17038
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised CMS platforms or appear to be part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9888

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://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/d8cd1fe747096fdc4740a933b6e34a48/nilebelodenov.pdf In PDF document text
    • http://nbpcpentecostalchurch.com/clients/65183/File/75863373719.pdfIn PDF document text
    • http://alexandercdg.com/clients/36029/File/19384206245.pdfIn PDF document text
    • https://www.karavanlakesfet.com/wp-content/plugins/super-forms/uploads/php/files/0569cae2eabc9bb4c820a4a487d2154a/34906840094.pdfIn PDF document text
    • https://christianboudreau.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607bef428feab---kumujareguvufadedepali.pdfIn PDF document text
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076b99dc8825---9381816788.pdfIn PDF document text
    • https://mudateconmigo.cl/wp-content/plugins/super-forms/uploads/php/files/2482e5a6fe1a515c91e34200cdc5cfb5/69433783065.pdfIn PDF document text
    • http://anoh.net/pds/userfiles/files/39499231609.pdfIn PDF document text
    • http://www.odnpoznan.pl/fotki/file/file/38292830367.pdfIn PDF document text
    • http://biosafety.biz/ckfinder/userfiles/files/jimanazapokajixe.pdfIn PDF document text
    • http://bona-agra.pl/Upload/file/nodeso.pdfIn PDF document text
    • https://evenimentecastel.ro/wp-content/plugins/super-forms/uploads/php/files/5qd73r7ls9o59ojr85tbcaql8u/vasudorisokuzaxijekijavex.pdfIn PDF document text
    • https://zapcdn.space/web/img/podborky/files/revusotunadubofadi.pdfIn PDF document text
    • http://brianhaymore.com/images/e/file/25573579593.pdfIn PDF document text
    • http://www.adatechotomasyon.net/wp-content/plugins/formcraft/file-upload/server/content/files/16083d75767f1e---32862049978.pdfIn PDF document text
    • http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b63816542d2---tevawozoduj.pdfIn PDF document text
    • http://unipell.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160738e4286126---nesapinidubefave.pdfIn PDF document text
    • https://militarynetwork.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16085f102da4b7---sekunowakupawefevase.pdfIn PDF document text
    • http://watthaistuttgart.de/userfiles/file/kaxunap.pdfIn PDF document text
    • https://ceilford.org/wp-content/plugins/super-forms/uploads/php/files/4ed222df1a5c07b5d0e68d983e2220e4/pelar.pdfIn PDF document text
    • http://cascinamana.it/userfiles/file/sagimepamabisemenisapow.pdfIn PDF document text
    • http://bettynblue.com/upload/fck_img/20210525/file/zuves.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/YTWXjIUwRh0/uplcv?utm_term=come+here+againPDF link annotation
    • https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/7dc730a60c7c5e2a50fd5a0f7101b1b1/vokogifesunaduvidor.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_005_off00015c08.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x15C08 23612 bytes
SHA-256: dcb4adfeef62c492ad0778cf0d21aa0f8e88670db33d94fb945cf62f1cb349a9
font_00_sfnt_off000100d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100D8 10276 bytes
SHA-256: eb6748a4aad089de144f957d4028fd8cf9150457ef408d3bd563bcbd3a694e06
font_01_sfnt_off000117be.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117BE 17016 bytes
SHA-256: 1e797a87777e9b16f0dd174c2c07807cca82e467e5efbcd428d39814454bc318
font_02_sfnt_off000143f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x143F7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1