Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae07aecaecf01221…

MALICIOUS

PDF

96.3 KB Created: 2021-06-28 22:37:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: e9b81879c393c026eabc431b1fc11750 SHA-1: bb216342b17bf4b90129535e7e32eb33e6e0815e SHA-256: ae07aecaecf01221c6733c1a2ef9fffe313ec6e8efb3819c493be4c073ed7722
156 Risk Score

Malware Insights

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

The PDF contains a link farm directing users to multiple compromised WordPress sites, likely to host malicious files. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing trojan. The presence of numerous links on disposable hosting and compromised CMS uploads reinforces the malicious nature of the document.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9936

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://www.afamaresme.org/wp-content/plugins/formcraft/file-upload/server/content/files/160a4aef80ed55---73123581403.pdf In PDF document text
    • https://hfdjet.com/wp-content/plugins/super-forms/uploads/php/files/5ac8cab3d3d5509cdfe62f44b36e4aeb/vafudijenupeboxoxuwo.pdfIn PDF document text
    • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/d1fa0d1e28d0e78d60eaefef7894ad3c/50136932144.pdfIn PDF document text
    • http://www.idenet.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609850213bf67---33703750876.pdfIn PDF document text
    • https://veterinarycarefoundation.org/userfiles/file/64140515532.pdfIn PDF document text
    • http://asja-doll.ru/userfiles/file/vivulubozibolubukaju.pdfIn PDF document text
    • http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/160846fff6718b---2799587663.pdfIn PDF document text
    • http://planetamama.ru/files/file/dafuk.pdfIn PDF document text
    • http://ks4073.com/file_media/file_image/file/38326156252.pdfIn PDF document text
    • https://www.ayersworthglen.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c2c081e6da1---vudewugovarumipiweboguj.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/1607b76ec013c3---vejewepitufazezepa.pdfIn PDF document text
    • https://www.criteriainvest.com.br/wp-content/plugins/super-forms/uploads/php/files/cuu9847ri4h0s7aqs1d5l02lt4/pezitixogur.pdfIn PDF document text
    • http://afghansolar.com/userfiles/file/nulerugo.pdfIn PDF document text
    • https://summit-christian-academy.net/scauserfiles/files/66154703779.pdfIn PDF document text
    • https://noble-worldwide.com/wp-content/plugins/super-forms/uploads/php/files/64d3f06e1f25aeb59018747cb2280f3b/vamogoxov.pdfIn PDF document text
    • https://africanresearchcenter.com/userfiles/file/94589984298.pdfIn PDF document text
    • https://narimasu-chintai.net/jcfiles/file/52047102261.pdfIn PDF document text
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b78c3e543fb---votenoje.pdfIn PDF document text
    • http://imi.vc/upload/files/kematurapatewuvuzexiw.pdfIn PDF document text
    • http://bochosushi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160702cbea2857---sewivolafefu.pdfIn PDF document text
    • http://alexlunacoach.com/img/editor/file/kukevumo.pdfIn PDF document text
    • http://fsgpj.com/upfolder/e/files/20210612122429.pdfIn PDF document text
    • http://ac-kenigsberg.ru/files/file/87561748699.pdfIn PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/d5f4a89049373a8da3f5d9fa4d8dc395/sodabuke.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=ruby+on+rails+idePDF 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_off00010ace.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10ACE 27484 bytes
SHA-256: 93dfcd17a8a1113ffc458b2fbb2b08c9576b629ab621501426caca46805273a1
font_01_sfnt_off00014412.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14412 10540 bytes
SHA-256: f6e43362c315fe0597d3f4dd2dccecf767e85b1f4de42897d683979f93ac4927
font_02_sfnt_off00015c32.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C32 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1