Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c5ed86561a06a4a…

MALICIOUS

PDF

108.8 KB Created: 2021-07-04 08:37:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 64b832aef33f4dbae31beffa2ce6c489 SHA-1: 914b63cbf27895b2d2d14fdf2808b1dbfb68d1fe SHA-256: 5c5ed86561a06a4a1200745b4b324000926418c678b7f49464e57e669e44c01e
156 Risk Score

Malware Insights

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

The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many hosted on compromised WordPress sites, suggesting it's designed to lead users to malicious content or phishing pages. The presence of multiple external URIs and link farms indicates a distribution or redirection mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9928

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://chcial.ru/uplcv?utm_term=manual+tuning+sky+channels PDF link annotation
    • http://bascobrunswick.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16071515f8af68---rarodamezozujatutewebopof.pdfIn PDF document text
    • http://brighterhealthcare.co.uk/wp-content/plugins/super-forms/uploads/php/files/g74knbjclh3qgevbsk30493760/27153634552.pdfIn PDF document text
    • https://dienlanhhonganh.com/images/pic/file/72504256350.pdfIn PDF document text
    • https://www.ibyservice.com/wp-content/plugins/super-forms/uploads/php/files/b0b3df50e3b6bd5cd40854926d04c23f/nafamivofugukatuva.pdfIn PDF document text
    • http://nhadatv.com/webroot/img/files/sakixoso.pdfIn PDF document text
    • https://golf-tout-terrain.com/publish/page/file/97053736256.pdfIn PDF document text
    • https://www.asahinadigital.com/wp-content/plugins/super-forms/uploads/php/files/3kovd47nqjifadnnjrhenfma0v/mipekubabix.pdfIn PDF document text
    • http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608218ac9de20---bojadujeru.pdfIn PDF document text
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/160748c0c69668---nemiwikululub.pdfIn PDF document text
    • https://nikoljski.com/ckfinder/userfiles/files/gofevobopolenimuf.pdfIn PDF document text
    • https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160728b0d82207---fepulemedo.pdfIn PDF document text
    • https://cbolean.com/wp-content/plugins/super-forms/uploads/php/files/fg9jn2tbtb7akrsitd0jfqiti6/27582844013.pdfIn PDF document text
    • http://alexforstarlight.com/clients/4/41/4125d763bdae894b2c088b8c4c0f4705/File/rinigapikewin.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/hn7hc6ceuqtkoclgq1docscdk0/46578674943.pdfIn PDF document text
    • https://dermatologie-chamonix.com/userfiles/file/82274581037.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/pf8kfjj1i1tadpbdbsbcgci1mj/fajozavuzato.pdfIn PDF document text
    • http://www.absolutecateringla.com/wp-content/plugins/formcraft/file-upload/server/content/files/16094318aa754a---jikejasobipesudagu.pdfIn PDF document text
    • http://adhdadvisory.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609285f1f3ce4---30649519316.pdfIn PDF document text
    • http://eprdel.cz/userfiles/file/worenovexobopakisiru.pdfIn PDF document text
    • https://www.allterra.group/wp-content/plugins/super-forms/uploads/php/files/073d7eff07a01b0d4fa63c8cd45225a6/97590770392.pdfIn PDF document text
    • http://mintaialuminum.com/d/files/vofomude.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/160807d1dd91ba---65670927339.pdfIn PDF document text
    • https://relaxationplusmn.com/wp-content/plugins/super-forms/uploads/php/files/c1a35e016f08604dac026b85183efc9a/67970959350.pdfIn PDF document text
    • https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/340fd467b950bcb1146eb937f945f5cc/vedakabegenefizazasudadi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001462f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1462F 17632 bytes
SHA-256: a1cb470dc6f5049336f80ad1e56800aa48098712740f0ff7cb46c2c99cd6ad18
font_01_sfnt_off00017471.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17471 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00018c88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18C88 10588 bytes
SHA-256: 7057c745765d54918596addbf579a8f856070261393866895efc605edc0e4172

Open this report in the interactive analyzer, or submit your own file for analysis.