Malicious PDF — malware analysis report

Static analysis result for SHA-256 2de09a28cb0b778e…

MALICIOUS

PDF

114.3 KB Created: 2021-07-03 09:41:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 7738b650b5fbc58c67f4c7326e2dbaa6 SHA-1: 2ef28db1c59a1f27044bbe9591405f83067fff26 SHA-256: 2de09a28cb0b778eda0549b37d6b89ec038661ebe8288331a566e8cd8b4d8bc6
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution T1059.007 JavaScript

The sample was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, directing users to various compromised websites and potentially disposable hosting, which is a common tactic for phishing or distributing further malware. The presence of embedded URLs and the PDF structure suggest an attempt to exploit users through deceptive links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://ajtoablakcentrum.com/_user/file/92579744456.pdf In PDF document text
    • http://iideree.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606f41446b3a7---pudisurup.pdfIn PDF document text
    • https://abofahed.com/userfiles/file/dalufuv.pdfIn PDF document text
    • https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/f8acbf01e7d750553a8dcf1285621428/valitoxorevefikukafulus.pdfIn PDF document text
    • http://www.immiflex.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607920d16af86---toxejikupi.pdfIn PDF document text
    • https://www.certificagreen.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081570044d0b---92665076448.pdfIn PDF document text
    • http://milcontabil.com.br/wp-content/plugins/super-forms/uploads/php/files/83adl00pkrkh2hfjrgb0f1jsv4/24010829519.pdfIn PDF document text
    • https://pui-vital.ro/msg_media/file/74859376795.pdfIn PDF document text
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/160775ac53929f---60237710603.pdfIn PDF document text
    • https://atolab.it/wp-content/plugins/super-forms/uploads/php/files/1d358cba49fe58457e70c47a6fe09495/96203185334.pdfIn PDF document text
    • https://earthideasawnings.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076db16649a5---loxixurapo.pdfIn PDF document text
    • http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b8921f8fa85---54504207231.pdfIn PDF document text
    • http://deauville.ru/files/file/xaxoxavomikimojodokadi.pdfIn PDF document text
    • https://afriqueitnews.com/wp-content/plugins/super-forms/uploads/php/files/b88f167944a3a7511bb03025e7b99a88/63460507474.pdfIn PDF document text
    • https://www.generalutilities.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a477747e2ca---22347816795.pdfIn PDF document text
    • https://ensegun2.com/ckfinder/userfiles/files/jofopezixozo.pdfIn PDF document text
    • https://www.ediliziaindustriale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3b0e5baf7a---69061615231.pdfIn PDF document text
    • http://teplolux72.ru/upload/file/xusurazosesavimabokilej.pdfIn PDF document text
    • https://www.sharpeningfactory.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092d2387e46d---zasukinimolomuse.pdfIn PDF document text
    • https://2-view.org/home/view/public_html/ckfinder/userfiles/files/fixisapakosemivokad.pdfIn PDF document text
    • http://benhvienlaptop.biz/userfiles/file/33432819010.pdfIn PDF document text
    • https://laihouston.com/wp-content/plugins/super-forms/uploads/php/files/42ec8c8b877a5ba5c4a6407ed4d6e6a0/livotigutavanozekatilixor.pdfIn PDF document text
    • https://oneremote.ru/wp-content/plugins/super-forms/uploads/php/files/82042dbdb20683705a8bb0edf2e0dede/rugoxebafupodajovirojosux.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=apex+college+and+career+preparation+1+answer+keyPDF link annotation
    • http://lovewhereyoulv.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/e11635fe08eeda803d942eea5193f0b8/77665234080.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_off00015b58.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15B58 17516 bytes
SHA-256: b7c0035df8b427155f3fa189265b261eeb41b2d037f849902819591adbdd1185
font_01_sfnt_off0001896e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1896E 11116 bytes
SHA-256: 49d2b749e875b24808a8ee975b907b0217a07d3e724a3190eff308d72c00ec03
font_02_sfnt_off0001a37b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A37B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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