Malicious PDF — malware analysis report

Static analysis result for SHA-256 2919197f44405829…

MALICIOUS

PDF

79.5 KB Created: 2021-07-17 00:56:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 2139f992b978e48aa36cf5b05bd043d3 SHA-1: adc3a2b85f3a17f60cfe02ff64671aee0c3dd5f7 SHA-256: 2919197f44405829c24b0d9df53d02cfd72f22293bbe0a1a518653c5700ff777
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains numerous external links, many pointing to compromised or disposable domains, indicating a link farm or redirection scheme. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution via these links. While no scripts were extracted, the PDF structure and URL analysis point to a malicious document designed to lure users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9846

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 http://fzcce.com/aimgs/uload/files/bibuvu.pdf In PDF document text
    • https://paroles-vives.com/ckfinder/userfiles/files/vupebipegemuralite.pdfIn PDF document text
    • http://guoyangmoju.com/userfiles/files/miluwesalamamepesirane.pdfIn PDF document text
    • http://chataphan.com/file_media/file_image/file/bavevu.pdfIn PDF document text
    • https://callhfelectric.com/wp-content/plugins/formcraft/file-upload/server/content/files/160793c7caa1ee---xoxosawumaxexowufoxabizor.pdfIn PDF document text
    • http://adanateknikservis.web.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160e097e4199b7---dopijowimizapavapenowanun.pdfIn PDF document text
    • https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/1527b6580ac7a77321dda40be7e6e77f/sazidokitekelepujekedumad.pdfIn PDF document text
    • http://nsdadventist.org/FCKData/file/natobu.pdfIn PDF document text
    • http://christembassydocklands.org/wp-content/plugins/super-forms/uploads/php/files/83cda6c3197bfcbff886c6b5e983e6fc/dobeserekisekedezape.pdfIn PDF document text
    • https://luminex.pl/upload/file/kanopigupakekemigejeniner.pdfIn PDF document text
    • https://alianzatours.com/imagenes/file/lifovapenenuxaxomawuf.pdfIn PDF document text
    • https://dewalt-naradi.cz/media/upload/editor/file/setukametizorupebomutul.pdfIn PDF document text
    • https://binarbaidservices.com/public_html/userfiles/file/82351592772.pdfIn PDF document text
    • http://cinstech-inspect-survey.com/fckeditor_userfiles/file/nujibex.pdfIn PDF document text
    • http://bagpack.com.np/wp-content/plugins/formcraft/file-upload/server/content/files/1606f74a77ae1f---11832738625.pdfIn PDF document text
    • https://evg-prague.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609d4fbb732dd---wibik.pdfIn PDF document text
    • http://ultraljud.nu/bild/files/tipaxemi.pdfIn PDF document text
    • http://www.drop-lok.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ac5bf2d6add---61893082999.pdfIn PDF document text
    • https://akrmedia.no/ckfinder/userfiles/files/divukutunolebimuneno.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160ad97cf18b56---11148046326.pdfIn PDF document text
    • http://ontsgoi.shop/uploads/files/pitasibubavakefazoxipodow.pdfIn PDF document text
    • https://indiantalentjunction.com/milan/media/55017771273.pdfIn PDF document text
    • http://makaifruits.com/wp-content/plugins/formcraft/file-upload/server/content/files/16083c8325e143---83851731734.pdfIn PDF document text
    • http://aeskulap24h.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609ccef51166a---61031609048.pdfIn PDF document text
    • https://www.stamfordtaxis.com/wp-content/plugins/super-forms/uploads/php/files/3qatgn0fckrm7gnu4m597dhu7c/20410391998.pdfIn PDF document text
    • http://humanitool.ru/userfiles/file/82705970658.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=2nd+year+chemistry+mcqs+with+answers+pdf+downloadPDF 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_off0000d1a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1A7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e9b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9B9 16964 bytes
SHA-256: 42d803ba3e56b6683bd13278a20b2c699057e18bcf3d9d455fe41f8d58e636d6
font_02_sfnt_off00011635.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11635 11252 bytes
SHA-256: 9593c67c46e9d35af55d52df73582b29ce4c44ae197ae34ac2a495e380e89920