Malicious PDF — malware analysis report

Static analysis result for SHA-256 d46cc1a9980d5f1e…

MALICIOUS

PDF

95.6 KB Created: 2021-06-28 02:23:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: dc46df5c96e3553bcebb0b6b5719fe0f SHA-1: 24d49ced56670634cc38239ef21a25c584f42ee4 SHA-256: d46cc1a9980d5f1ed9a8a7d102c538522eff10c47a327ccb93bcc55c4acebc2b
156 Risk Score

Malware Insights

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

The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and an ML classifier indicated a high probability of maliciousness. Heuristics identified it as a link farm pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution attempt. The embedded URLs, while some are benign, are part of a larger pattern of directing users to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://www.studiolegalefusimorelli.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609090b9bf538---40002895252.pdf In PDF document text
    • https://rclurie.com/wp-content/plugins/super-forms/uploads/php/files/f68be776ab49fedbc5a58868cfb5a223/62318848719.pdfIn PDF document text
    • http://skyfestival.kr/ckfinder/userfiles/files/31887328254.pdfIn PDF document text
    • https://circolodelpistone.ch/userfiles/file/pukoxojeloruvilikikud.pdfIn PDF document text
    • https://cvenhancer.com/wp-content/plugins/super-forms/uploads/php/files/31a6f486aae547761fed08b1df2540e5/50861096310.pdfIn PDF document text
    • http://kap-group.com/ckfinder/userfiles/files/27936440891.pdfIn PDF document text
    • https://airshow-bg.com/file/31727064168.pdfIn PDF document text
    • http://candientushinko.com/images/file/kevajid.pdfIn PDF document text
    • http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160a08013deb72---pebagepub.pdfIn PDF document text
    • https://jahanchart.ir/data/files/file/8511016495.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/1608f8aa914df3---mimebe.pdfIn PDF document text
    • http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a57f96885c---54106926682.pdfIn PDF document text
    • https://promise-land.com/upload/file/2933064712.pdfIn PDF document text
    • https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c60466162c1---54201454953.pdfIn PDF document text
    • http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/739fb0bf2e3fc831c8cb749184541bca/xugururew.pdfIn PDF document text
    • http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607faae3606e5---rizizirafufepakeri.pdfIn PDF document text
    • http://pahsclassof2005.com/clients/d/d6/d61c4c031b0f3af13d3e88110ef3a3e1/File/75548840736.pdfIn PDF document text
    • http://coffee33.ru/archive/file/66237369377.pdfIn PDF document text
    • http://www.cenlajobinator.com/siteuploads/editorimg/file/19537987515.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075b7807c472---98398497608.pdfIn PDF document text
    • https://414movement.com/wp-content/plugins/super-forms/uploads/php/files/35248110cf96d9806f2bcb83f109996d/lamoroduneda.pdfIn PDF document text
    • http://www.caribbeandentist.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a019e64625f---nubeluzejezafunajonoja.pdfIn PDF document text
    • https://www.dolphinrfid.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086804c2d3bd---11052929694.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=is+killer+whale+a+fishPDF 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_off0001164e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1164E 10116 bytes
SHA-256: fc24bdc58fd674c3ea686223f343277c60d5b7d0f14e8728d56824263f219f67
font_01_sfnt_off00012d05.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D05 16864 bytes
SHA-256: 9a4e9b71ce505760a54e4d3005a8ff8ad8501908a944444674105912216c26f9
font_02_sfnt_off00015937.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15937 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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