Malicious PDF — malware analysis report

Static analysis result for SHA-256 bc3b053f59fdd86b…

MALICIOUS

PDF

179.0 KB Created: 2021-06-30 04:04:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 1cfbc7cd12d6929a70509ff565aa2997 SHA-1: de3ba9926fc513b0b363c311693be1e8839bf7fa SHA-256: bc3b053f59fdd86bef5576c2adc7fe8bb82e04989a8254f99cbf173b735de9ab
296 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

This PDF document exhibits multiple social engineering lures, including a browser extension installation pretext and a direct request for sensitive recovery secrets. The presence of numerous links to potentially compromised WordPress upload directories and the ClamAV detection as 'Pdf.Phishing.Trojan' strongly indicate malicious intent. The document likely aims to trick users into compromising their systems or divulging sensitive information.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9742

Heuristics 9

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Recovery secret / private key request critical SE_SECRET_RECOVERY_LURE
    Document requests recovery phrases, private keys, backup codes, or saved passwords. Requests for these secrets in a document are high-risk.
  • ClickFix social engineering attack high SE_CLICKFIX
    Document instructs the user to press Win+R or paste a command into a terminal — consistent with ClickFix attacks that bypass macro restrictions by tricking users into running malicious commands directly
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16078ed1235365---dipesi.pdf In PDF document text
    • http://extreamtuning.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607d5ed3e6e88---46453513517.pdfIn PDF document text
    • https://www.tangelo.no/wp-content/plugins/formcraft/file-upload/server/content/files/1606dcd9d6a525---89616156703.pdfIn PDF document text
    • http://bestbuyfromindia.com/userfiles/file/labowixite.pdfIn PDF document text
    • http://firegallery.ru/img/upload/sasigub.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5a59d313af---daxobutadukiv.pdfIn PDF document text
    • http://fouladsazanco.com/Upload/file/funavunimisabafevigarebuf.pdfIn PDF document text
    • http://audiencefertilization.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/30569170069.pdfIn PDF document text
    • https://viettrungson.com/media//Files/gidonipo.pdfIn PDF document text
    • https://hpx.com.ua/wp-content/plugins/super-forms/uploads/php/files/e375c5f01d3f62c416319c8e35be5859/18410896513.pdfIn PDF document text
    • http://andlupa.com/userfiles/file/rakufavinodurasalupo.pdfIn PDF document text
    • https://jairdefreitas.com/ckfinder/userfiles/files/zegafuzapitagesazod.pdfIn PDF document text
    • https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/d1b1353260fb34d125315b10b228c44b/lodipo.pdfIn PDF document text
    • http://chroscina.com/userfiles/file/pumabuwurar.pdfIn PDF document text
    • https://mavismanagement.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607ebadc3d6f2---72787894152.pdfIn PDF document text
    • http://personnelstrategies.net/userfiles/file/vasiferinaviwenogiwukikiz.pdfIn PDF document text
    • https://www.ikedatosou.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d60ff5e6f4---70886573729.pdfIn PDF document text
    • http://hoondb.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071f557b3a7b---88285612544.pdfIn PDF document text
    • https://airflow-skateboards.com/upload/file/vuvezodeximefuxadaxebuxo.pdfIn PDF document text
    • https://genericdiabeticteststrips.com/userfiles/files/37963409028.pdfIn PDF document text
    • https://www.karenlovelee.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d8bd27e189---34105378714.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606f2f807f0c5---furaz.pdfIn PDF document text
    • http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607c7ca78e4e3---89301526683.pdfIn PDF document text
    • https://shipnhanh247.vn/asset/files/jusig.pdfIn PDF document text
    • http://buren-kompanie.de/userfiles/files/guzewek.pdfIn PDF document text
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/1607b8be29878d---sutuxiz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=how+to+turn+off+windows+auto+updatePDF 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_off00025f27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25F27 17536 bytes
SHA-256: 1188da05d94c9f46b239577f68d9455cee11ef672f3e49eded75fcd37a4992ce
font_01_sfnt_off00028d3f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x28D3F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0002a556.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A556 10624 bytes
SHA-256: 945f14207bacd05b40366b4478ed492c54fa646a46d5f262b46aa359116b72b6

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