Malicious PDF — malware analysis report

Static analysis result for SHA-256 c9cb1d7d0740ea6f…

MALICIOUS

PDF

98.5 KB Created: 2021-07-27 18:10:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 57a4746b0e27220267ce8c7083d5f426 SHA-1: c289770848783fe97025f9bf322bbcdbef2d39b4 SHA-256: c9cb1d7d0740ea6f8adb8ab15fb83a1962c047d66e39ce1bcd531087f391f54f
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous links, many pointing to compromised WordPress sites, suggesting it functions as a link farm to distribute further malicious content or phish for information. While no scripts were directly extracted, the nature of the links and the heuristic firings strongly suggest an attempt to redirect users to malicious sites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9870

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://hotelritariccione.it/wp-content/plugins/formcraft/file-upload/server/content/files/1606cbe51bb775---lusotukol.pdf In PDF document text
    • https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/8dbb7a031c80b0f2319572a14b54b8b9/52340478149.pdfIn PDF document text
    • http://nacyc.jp/Upload/file/50052356238.pdfIn PDF document text
    • http://jarosi.hu/files/file/53274166137.pdfIn PDF document text
    • https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/uqbj240taud32kdq96c6u75br5/zoforena.pdfIn PDF document text
    • https://syteq-pro.com/userfiles/file/61202565253.pdfIn PDF document text
    • https://mamproducciones.es/wp-content/plugins/formcraft/file-upload/server/content/files/16083bbaeee963---bupoxar.pdfIn PDF document text
    • https://aihr-iadh.org/uploads/FCK_files/file/92969293193.pdfIn PDF document text
    • http://tandartsindex.nl/images/uploads/98244844259.pdfIn PDF document text
    • http://cargo3030.ru/wp-content/plugins/formcraft/file-upload/server/content/files/16083104cddf8d---91551992273.pdfIn PDF document text
    • http://www.css-jp.com/upfile/files/2021/07/13/bifozod.pdfIn PDF document text
    • https://jennysbooks.com/wp-content/plugins/super-forms/uploads/php/files/bdca41d70ff5b9a2c3e6e1de55a267db/ribojewexekanukog.pdfIn PDF document text
    • http://aliancegroup.su/wp-content/plugins/formcraft/file-upload/server/content/files/160be7196a9595---78333801464.pdfIn PDF document text
    • http://gshosnab.ru/userfiles/file/zenuzakewelixijegepup.pdfIn PDF document text
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bba6dc69246---jenogudaxurubokotida.pdfIn PDF document text
    • http://truhlarstvisollner.cz/data/file/rotexedizudisewotagibixe.pdfIn PDF document text
    • https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160873d2e6cc57---60283688676.pdfIn PDF document text
    • https://jfefood.com/wp-content/plugins/super-forms/uploads/php/files/590e9f02c59516fdb83c3b76e179b8e9/noginot.pdfIn PDF document text
    • http://ytbozhuo.com/upload/file/09123214919.pdfIn PDF document text
    • https://balajitutorial.com/admin/userfiles/file/86075083065.pdfIn PDF document text
    • https://premiumvipbusiness.com/wp-content/plugins/super-forms/uploads/php/files/3356efdeb1256927b9a91e6935e903fd/famevofi.pdfIn PDF document text
    • http://jiehuist.com/userfiles/files/75532765401.pdfIn PDF document text
    • https://www.beachesbrewing.com/wp-content/plugins/super-forms/uploads/php/files/671eab0c6c31829433f8c4e503949cff/muraganaripo.pdfIn PDF document text
    • https://alenakovalchuk.ru/wp-content/plugins/super-forms/uploads/php/files/615da5fc0813df4c90135f608a868fcd/67060184081.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=arthdal+chronicles+ep+7+eng+sub+full+episodePDF 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 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f8e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF8E0 17688 bytes
SHA-256: 5651d2424df165c9738ecf6ad1aed36a9aad09e5829a1f256467536daf6e3912
font_01_sfnt_off000126bc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x126BC 16216 bytes
SHA-256: 8c2e9d80d580d08964a5048de7b59c27befd741f1c379efd0abbd599686b3e88
font_02_sfnt_off00013c69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C69 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_03_sfnt_off00015480.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15480 11168 bytes
SHA-256: e14eaf3feaa7e91b40e003c22cce8d121cd7ebbba7fe633587a0af8a286fbb6d
font_04_sfnt_off00016e28.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16E28 2668 bytes
SHA-256: 71de8ebfe10d1b80801476fa05e54e808151607a9959ef812d3693f6eed48e80

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