Malicious PDF — malware analysis report

Static analysis result for SHA-256 e9c31d7594c10010…

MALICIOUS

PDF

91.6 KB Created: 2021-07-26 10:25:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 7d99757828672a027fd768b3e2865a21 SHA-1: ae6b5e28c9792eca5915e2fd751024507cf18c76 SHA-256: e9c31d7594c10010a36e51666aa40cb53b31d07624b2536db8ba9db8d8a4e94d
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous embedded URLs, many of which point to compromised CMS uploads and disposable hosting, indicating a link farm designed for phishing or malware distribution. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://www.vedaaz.com/wp-content/plugins/super-forms/uploads/php/files/72a013f2a0900fa1467a6a8448f26580/fesugonerosoromumupega.pdf In PDF document text
    • http://sport-way.ru/img/file/50925461653.pdfIn PDF document text
    • https://www.elementstraining.co.uk/wp-content/plugins/super-forms/uploads/php/files/gu8bn6qc7ggtuih14bsc6lqosv/weburufemojegili.pdfIn PDF document text
    • https://surupaceanu.ro/ckfinder/userfiles/files/30134104810.pdfIn PDF document text
    • http://gesundezellen.de/neu/userfiles/file/ropuled.pdfIn PDF document text
    • http://dom-2000.ru/ckfinder/userfiles/files/kujoxej.pdfIn PDF document text
    • https://suma.ca/upload/editor/file/fuzuruni.pdfIn PDF document text
    • https://higher-reason.com/wp-content/plugins/super-forms/uploads/php/files/8s40rr7q8p8m45701gqrragke8/29110205716.pdfIn PDF document text
    • https://kingcarmotorista.net/uploads/files/25826811073.pdfIn PDF document text
    • http://nhadephoanhao.vn/upload/ckupload/files/rinozujimerag.pdfIn PDF document text
    • https://siyata.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160c235dd9a5ea---59505023177.pdfIn PDF document text
    • http://come2menorca.com/images/file/11118779096.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/rovejizilepipelarag.pdfIn PDF document text
    • https://www.taxiserviceh24.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f41dd98d90---62316782272.pdfIn PDF document text
    • https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/93bf052323148a9a4ab187d57dcfb142/pagunonigubasifekuwaxonu.pdfIn PDF document text
    • https://vrindaindia.com/php/joseph/uploads/file/8983523068.pdfIn PDF document text
    • https://roadtoring.com/wp-content/plugins/super-forms/uploads/php/files/9689f3e35c34f9b2b42d5422adafb134/moraxuwureliwawizu.pdfIn PDF document text
    • http://www.restorationservice.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a9424c09e66---80376068572.pdfIn PDF document text
    • https://adikketiga.com/contents//files/75671584260.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb8cb1f65d---19476784446.pdfIn PDF document text
    • https://xn--80aaa1arbfjoe3bzh.xn--p1ai/data/files/saledebusanagubudinirur.pdfIn PDF document text
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/t033o4hn10do09b6694tad29ia/jeregitetogezebidi.pdfIn PDF document text
    • https://udachi.co.th/wp-content/plugins/super-forms/uploads/php/files/fdp3h5kik1gv8sr1j8hr2q2qna/84810728764.pdfIn PDF document text
    • http://drukarnia-skawina.pl/app/webroot/media/files/76393673833.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=aunque+tenga+miedo+hagalo+igual+susan+jeffersPDF 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_off0000ff53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF53 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0001176a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1176A 11160 bytes
SHA-256: 9d7c317382d06f8a18604cf4f7fb96a9bcca9a7d2df0edb82abcbdc8ed1d9d73
font_02_sfnt_off000130bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x130BB 18428 bytes
SHA-256: aef0a61e46da1b10882f9a69d7c0d72d25b63ced719c42726ad1c5e98a4d55f2