Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ce84b012c9352b1…

MALICIOUS

PDF

95.2 KB Created: 2021-06-26 15:56:04 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: a68a1d499cbffcb329ecd07b5546f437 SHA-1: 9a505e79fc189eb8b53b1d9e99af4cd972f42465 SHA-256: 6ce84b012c9352b1e03c99e03242e9713c50c94d497e7c88af7a536d8eb50e16
164 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, with numerous URLs pointing to compromised websites and disposable hosting, likely intended to lure users to phishing sites or download further malware. The presence of 'utm_term' parameters suggests an attempt to track user engagement with these malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

Heuristics 7

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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.lauricedale.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160a8d52f05a2a---84885830188.pdf In PDF document text
    • http://pvhs1967.com/clients/a/aa/aa78cb05297cd93d8a9ab6bd1eb8a3c4/File/1656867119.pdfIn PDF document text
    • http://watthaistuttgart.de/userfiles/file/givoxutesuxesugapeni.pdfIn PDF document text
    • http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7a17676501---23258575377.pdfIn PDF document text
    • https://eastmanllc.net/ckfinder/userfiles/files/36380714853.pdfIn PDF document text
    • https://space1500.com/wp-content/plugins/super-forms/uploads/php/files/78575d9f2684b00d1d36a8e923a28ed8/37402678847.pdfIn PDF document text
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606ee9094659d---57552309047.pdfIn PDF document text
    • http://svenstavik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609923c5b5c54---wururojesafuripovabil.pdfIn PDF document text
    • https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/590c108dbb92dba5f29402568f30fff6/46801799114.pdfIn PDF document text
    • https://bonpetsupply.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fe914d62d7---jikujejesanujikavimez.pdfIn PDF document text
    • http://brodart01.com/wp-content/plugins/super-forms/uploads/php/files/4ns9t623tkkl3te1jfest9k4l0/tilotezulisukol.pdfIn PDF document text
    • https://bandotrading.com/uploads/file/44531946477.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/47962533293.pdfIn PDF document text
    • http://beveragesgs.com/userfiles/file/21920845289.pdfIn PDF document text
    • http://informerfitness.com/wp-content/plugins/super-forms/uploads/php/files/3835152ae492f99b2a248f5f6d68bcee/rujibu.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/25403444d64f2a98c18de4820a28efa2/dusalikipazin.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/5ad2ba2c3eb333f0f3933bd3c4b4d28d/jujoxefisofodiroxo.pdfIn PDF document text
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160acbc79d6aa8---27924549614.pdfIn PDF document text
    • http://smithmurdock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609cc418e92ee---mafegatun.pdfIn PDF document text
    • https://ifacemount.com/wp-content/plugins/super-forms/uploads/php/files/gvlbakppqrocnnm2i4t6a7v6fj/96717558041.pdfIn PDF document text
    • https://diversified-nj.com/wp-content/plugins/super-forms/uploads/php/files/af498774b15898f5c438230e54cb6d54/66545197006.pdfIn PDF document text
    • http://afslab.asia/upload/files/zokurimuwisawevet.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=gestation+chart+for+goatsPDF 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_off00011502.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11502 16400 bytes
SHA-256: cfb61a52cdb6f6741d60702c76b4360297b040a04e8a7391b325aeb1917df326
font_01_sfnt_off00013fb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13FB3 10608 bytes
SHA-256: 607f9f77ee03fbda822ea0063168505739c564a04dc384f95ac204f3c046c7db
font_02_sfnt_off000157f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x157F3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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