Malicious PDF — malware analysis report

Static analysis result for SHA-256 99e2fc35afa2ae7f…

MALICIOUS

PDF

102.5 KB Created: 2021-09-06 15:27:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-04
MD5: 6fee6420f105d62f7151edd698f5d303 SHA-1: 0f151b89c4bec04ae74d3813eb84ef92d1256667 SHA-256: 99e2fc35afa2ae7f65e02b0a3e8ad82888298feb0ad7855fd59e4d7acfa6f26a
156 Risk Score

Malware Insights

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

The file is a malicious PDF detected by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It contains numerous links, many pointing to compromised CMS upload storage and disposable hosting, suggesting an attempt to redirect users to malicious websites. The presence of 'utm_term' parameters in some URLs indicates a potential phishing or scam campaign.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9961

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://people11people.com/uploads/File/wefukagajiduzonaralulom.pdf In PDF document text
    • http://elyriahigh1974.org/clients/0/05/052ab20d644b737728595af1a47b4450/File/simedafo.pdfIn PDF document text
    • http://kangs78.com/clients/66216/File/36432255599.pdfIn PDF document text
    • http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1607bc452cee69---67931380067.pdfIn PDF document text
    • https://media-get.ru/userfiles/files/91722437704.pdfIn PDF document text
    • http://npxbyy.com/wang3_3_10_27/Upload/Upload/file/202183042532660.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/16085e1318adf2---96991238229.pdfIn PDF document text
    • https://perfectprojects.ro/userfiles/file/bemugigulewugorag.pdfIn PDF document text
    • http://leap-egypt.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fce9a1b6aa---82847351900.pdfIn PDF document text
    • https://formapolis.it/wp-content/plugins/super-forms/uploads/php/files/f48d35c2c5df332647b3cbdaf4848db2/kiwogupeladuwejikenuvesu.pdfIn PDF document text
    • http://emilymillerlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/voluvawakenav.pdfIn PDF document text
    • http://fujavietnam.com/images/Download/7516684057.pdfIn PDF document text
    • https://arch.ua/ckfinder/userfiles/files/wigedumufolo.pdfIn PDF document text
    • https://malashealthcare.com/userfiles/files/98325818546.pdfIn PDF document text
    • http://orgue-chantepie.info/FCKeditor/upload/file/baratazokerome.pdfIn PDF document text
    • https://micast.de/wp-content/plugins/super-forms/uploads/php/files/mi544he3mmsbs6vegpu8atd8ev/suroxile.pdfIn PDF document text
    • http://originalbau.hu/imagesfiles/wofirozo.pdfIn PDF document text
    • http://iwilldoit.ru/uploads/files/files/ruzixokepupudas.pdfIn PDF document text
    • https://www.andrecampbell.ca/wp-content/plugins/super-forms/uploads/php/files/b9681cb344db95b73ff42700d1c1692d/sitelavogerepi.pdfIn PDF document text
    • http://saydersan.com/firma/files/fafevipukewawuvome.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160984e440039f---70454539014.pdfIn PDF document text
    • http://southfieldhigh1973.com/clients/2/27/27a5067865c8334ad4a5a1fd7642c928/File/jikew.pdfIn PDF document text
    • https://webtraffic.ch/wp-content/plugins/super-forms/uploads/php/files/heq47g6t6s8hpfpf2k12f4l9h4/34431002067.pdfIn PDF document text
    • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/5fa88c9e49e238d31f18c41b9f7048a2/wirololefugisufoxibor.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/16115a2a00eb30---10368564633.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/S30rS-6n6vg/uplcv?utm_term=motivational+letter+for+job+application+pdfPDF 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_off000128f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x128F8 10776 bytes
SHA-256: 949c7a2599e6e8fe76c3b305b68b7dac4d3675e448fa8b055281737912ca744a
font_01_sfnt_off000141a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x141A8 19124 bytes
SHA-256: c83e6fb709690d7db0867319c8c2dcd29e0de9ffcd0f99d8b4f3958199e0e4cd
font_02_sfnt_off000173e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x173E8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1