Malicious PDF — malware analysis report

Static analysis result for SHA-256 c01e820c5408ce75…

MALICIOUS

PDF

73.5 KB Created: 2021-07-03 04:02:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 3c75964651780cbcede1164179ccb3cb SHA-1: 20d4437a9a4b6a5154d11374f1abc051deb86ba8 SHA-256: c01e820c5408ce755917e0c249c0f410f2eb42f64ce3bfd6019b2ae9b7657e83
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of links, many of which point to compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent. The primary purpose appears to be directing users to external, potentially malicious, content through a link farm hosted on compromised infrastructure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://miamiuniquelimo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a4ba92b90d---94749699025.pdf In PDF document text
    • http://goodwill.as/userfiles/file/vuwogebaz.pdfIn PDF document text
    • http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609869bc0d953---45819567738.pdfIn PDF document text
    • http://makaeximworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bca35372ace---3791179652.pdfIn PDF document text
    • http://chothuexehochiminh.com/userfiles/file/74359703957.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d90f9d2a8d1.pdfIn PDF document text
    • https://store-connector.com/_upload_bilder/_filemanager/file/zilubuwabojekovusavorovop.pdfIn PDF document text
    • https://pankalconstructora.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cff331454d---jafetasivofapizodal.pdfIn PDF document text
    • http://dr-onesrl.com/userfiles/files/lisevi.pdfIn PDF document text
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/160accbb61b3c8---dubotag.pdfIn PDF document text
    • https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/1d81pg69re79o2qitk1qanobd7/wesisakuf.pdfIn PDF document text
    • http://bean2beenefamilytree.com/clients/60578/File/fijamum.pdfIn PDF document text
    • https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/sljp1gs0v1pin7rr9g1tiecls5/61211594361.pdfIn PDF document text
    • https://sabagdasarov.ru/upload/file/81874125428.pdfIn PDF document text
    • http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dc7952260b---rulimufedavokopukoduzal.pdfIn PDF document text
    • http://airlineclassof66reunion.com/clients/c/cb/cb51827d251551eca15067b3b23580a4/File/kerojer.pdfIn PDF document text
    • http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/da5e0469b509b4341912434c709e2026/dikajidoluworitifabarap.pdfIn PDF document text
    • http://longthinhphat.net/uploads/files/kedubexozuwon.pdfIn PDF document text
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a78e4a752ef---74406766332.pdfIn PDF document text
    • http://akicgiyim.com/userfiles/file/fakizirukugivulediveraj.pdfIn PDF document text
    • http://acecaalcoy.com/userfiles/file/bowisamabibaxizidali.pdfIn PDF document text
    • https://senfina.top/uploads/files/zabanokik.pdfIn PDF document text
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/98f51527ec898a9354853323f41790b7/19330326723.pdfIn PDF document text
    • https://kuechentreff-schmid.de/wp-content/plugins/super-forms/uploads/php/files/jehrhn17em10qnegcp5po0feuc/2041567241.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/1xuhb7AK25c/uplcv?utm_term=best+business+to+start+in+2020PDF 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 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_off0000bf96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF96 15720 bytes
SHA-256: 752af79b84ad461007cca7f05391061b436db7cd538b0e312ac85bf3cd1eb2b1
font_01_sfnt_off0000e7ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7ED 10588 bytes
SHA-256: 9e07f5bd43ca3df6b4657d61493811ddc0c5b9acf5fa89935d5061329b6372fb
font_02_sfnt_off00010056.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10056 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1