Malicious PDF — malware analysis report

Static analysis result for SHA-256 46cba8d1d4211566…

MALICIOUS

PDF

86.1 KB Created: 2021-06-28 00:53:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: c087840c086222b387d5e147717dc85b SHA-1: 364f6be853cbcb87b7ad561d938cf4ccc6b5db13 SHA-256: 46cba8d1d42115669fa3062f92d1f46a9d7efe4cd165d8d6957bf887fe7f4489
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains a link farm pointing to multiple compromised WordPress sites and disposable hosting, likely intended to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics suggest it's part of a phishing or malware distribution campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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 https://lightsourceindiana.com/wp-content/plugins/super-forms/uploads/php/files/52279e6eb173c6f79f6c5545c6dd6c0d/88085064410.pdf In PDF document text
    • http://aucoindeshalles.com/menu/file/buveporipuxugowurokekef.pdfIn PDF document text
    • http://kiavysocina.cz/UserFiles/File/45936127056.pdfIn PDF document text
    • https://singaporenotarypublic.com/wp-content/plugins/super-forms/uploads/php/files/1a4afc025e452d1cae1cbae5497e682a/fapipukamekiwivuje.pdfIn PDF document text
    • http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/16099e324d0102---sunavojudibavu.pdfIn PDF document text
    • https://baxsporthorses.nl/userfiles/file/75533422585.pdfIn PDF document text
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0f61227e60---zoseniragodizot.pdfIn PDF document text
    • http://bertoniamministrazione.it/bertoni/public/file/modedeluv.pdfIn PDF document text
    • https://primax.fr/wp-content/plugins/super-forms/uploads/php/files/fce8tr84g2g1694e80f9lcu2e3/goxonorebudiwabekatosavir.pdfIn PDF document text
    • http://beiwendq.com/userfiles/file/bajibebawofapuxuxivegi.pdfIn PDF document text
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160942e634dcc3---binelisujodoxisofodekija.pdfIn PDF document text
    • https://contabil-fiscal.ro/mm/file/kimunizekelawuvo.pdfIn PDF document text
    • http://www.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a1131e9f74d---bowololotixekarison.pdfIn PDF document text
    • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/6e8f2bcf16811523f9d1d903b29e70b7/54551612766.pdfIn PDF document text
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/0ad9895b15006cf912b233c5839b8b50/sexovazinufirepif.pdfIn PDF document text
    • https://flexrocksrollovers.com/wp-content/plugins/super-forms/uploads/php/files/patnuf8n7bfucdqaou4rtr54rj/11625077995.pdfIn PDF document text
    • http://feynburg-uhren.de/uploads/32707281404.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/cf9e30b1bd8bd303e17ed2353d919fdb/4524992642.pdfIn PDF document text
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160947f3ace6ea---29020236823.pdfIn PDF document text
    • http://khaskhaan.mn/uploads/userfiles/files/maligebolaremesami.pdfIn PDF document text
    • https://mps-india.com/userfiles/files/65131070027.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/PmAiG5ZyT-k/uplcv?utm_term=what+are+all+the+multiples+of+2PDF 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_off0000f04d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF04D 10732 bytes
SHA-256: b8523c6ea7b9fa6ba8aa809c482a9236c06f22c7771feab1962b39ca6b8f234f
font_01_sfnt_off00010902.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10902 16336 bytes
SHA-256: 3af5dad2cfd8161ffb783ff952890567185894710f3ea09913f82be7727f5319
font_02_sfnt_off00013347.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13347 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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