Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a2055e4e4988fdd…

MALICIOUS

PDF

91.0 KB Created: 2021-07-05 15:09:40 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: cbb7de19e35c000e876f8e18339d6cec SHA-1: d0a10304651aa11cec197f43ea11179e98a08184 SHA-256: 2a2055e4e4988fdd39c8b400d52f55727f4867965e4fedcfd43f1ce36f38290b
156 Risk Score

Malware Insights

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

The PDF document contains a link farm pointing to numerous domains, many of which are hosted on compromised CMS uploads or disposable hosting. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or distributing further malware. The document's structure and URL patterns are consistent with a malicious PDF designed to lure users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9822

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://hoggard1975.com/clients/a/a4/a43fc1111b7ad4318f8b553feb79a890/File/34975105601.pdf In PDF document text
    • https://alphacleanwashing.com/wp-content/plugins/super-forms/uploads/php/files/3f7e1969822de1ba803beb7464f1d7f0/kipizifopelarawu.pdfIn PDF document text
    • http://espacioschillout.es/images/admin/file/musodipawopeluduvebok.pdfIn PDF document text
    • https://eastmanllc.net/ckfinder/userfiles/files/jalidopalafujonetuzodu.pdfIn PDF document text
    • https://www.waterlooarmsnewforest.co.uk/wp-content/plugins/super-forms/uploads/php/files/3ca4d8b495efaff03bfbed4c6834368d/10590148641.pdfIn PDF document text
    • https://accesoriosalmayor.com/images/userfiles/file/80388172837.pdfIn PDF document text
    • https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072148116673---jixodozegefikazobipiverem.pdfIn PDF document text
    • http://ufnk.fr/app/webroot/files/file/kowapijoso.pdfIn PDF document text
    • http://hayatteknoloji.com/webimage/file/43610169402.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/94636764574.pdfIn PDF document text
    • http://oneself.pro/wp-content/plugins/formcraft/file-upload/server/content/files/160c39a23664b2---11060585914.pdfIn PDF document text
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160b1543d13e40---vuvigokirowe.pdfIn PDF document text
    • https://engravestone.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088b4ed33907---zutarido.pdfIn PDF document text
    • https://isleo.com/i_photos/file/biwarobexovifizesoritinas.pdfIn PDF document text
    • https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/f97484f7231eb22d302461ac9c1195a2/55776827708.pdfIn PDF document text
    • https://hr-serdahel.hu/images/file/39911528193.pdfIn PDF document text
    • https://hmv.ir/wp-content/plugins/formcraft/file-upload/server/content/files/1606d1c4f82a2a---lotazojasebikuduvuwimu.pdfIn PDF document text
    • https://alakharia.com/public_html/userfiles/file/95092704884.pdfIn PDF document text
    • https://www.nestroots.com/wp-content/plugins/super-forms/uploads/php/files/re0755ki0uioimt4fqpivukog2/12121288214.pdfIn PDF document text
    • https://apparel.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/1380f81ac50e55d175451f8f2a9a6187/wumemego.pdfIn PDF document text
    • https://teenvolunteerhouston.org/wp-content/plugins/super-forms/uploads/php/files/c54e274c30df274a46d805293c752f10/wimiwifugepara.pdfIn PDF document text
    • https://evrenmentese.com/upload/ckfinder/files/nuledexokikolepuxedidabuv.pdfIn PDF document text
    • https://cubic.is/userfiles/file/xuxepamabolevikogun.pdfIn PDF document text
    • https://tylbm.com/Upload/ckeditor/files/befuf.pdfIn PDF document text
    • https://avenue102.com/uploads/file/72744193247.pdfIn PDF document text
    • https://tlpnw.com/wp-content/plugins/super-forms/uploads/php/files/2ad774265cb7a8f43a983a5761e63fa3/lediwevupe.pdfIn PDF document text
    • https://tfnd.org/wp-content/plugins/super-forms/uploads/php/files/f01dfa8635d9a6d9eef1b65e261bc1fd/20336735137.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=short+hair+for+square+shaped+facePDF 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_off00010295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10295 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011aac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11AAC 10888 bytes
SHA-256: e3f8218da8287fc98c444d7f192d6968add225473451fc333596f0358618dcb4
font_02_sfnt_off000133c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133C7 16448 bytes
SHA-256: d33102fb310254d5b03031cc5630ce4d9d3e14a91b1f6355e6d30250d6b7825d