Malicious PDF — malware analysis report

Static analysis result for SHA-256 e00681c9721a381d…

MALICIOUS

PDF

90.7 KB Created: 2021-06-25 20:12:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-05
MD5: 012f23065ea35c36fa0400ec9bcce4c6 SHA-1: c61e65755cf05dbd55d72a6da82beca3710a9b3b SHA-256: e00681c9721a381d2e3f5f8e05e65f86fc125098c6febdff2ee6742632bc3d73
156 Risk Score

Malware Insights

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

The PDF file contains a link farm with numerous URLs pointing to potentially compromised websites, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of multiple links on disposable hosting and the use of UTM parameters further support the classification as a malicious link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9952

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://tofuyatogo.com/uploads/files/99119293839.pdf In PDF document text
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/jdk8mqtrfe8ifkmjqb5j7u2j0l/49917528102.pdfIn PDF document text
    • https://infravoip.com/wp-content/plugins/super-forms/uploads/php/files/b91db614ba4f9d5e64e3c328c6a7575d/nujokodapujegif.pdfIn PDF document text
    • https://creteotels.gr/FCKeditor/userimages/file/89239945920.pdfIn PDF document text
    • https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/0a82be7cd5af5dc53603fe003613a5d9/jizodanekajujusifikexole.pdfIn PDF document text
    • https://www.thecandystoresudbury.com/wp-content/plugins/super-forms/uploads/php/files/hfug0ug8oihvb2fipcqktldipi/digagizotu.pdfIn PDF document text
    • http://bigband-ulm.de/userfiles/files/tabazotixo.pdfIn PDF document text
    • https://nhaban24h.com.vn/wp-content/plugins/super-forms/uploads/php/files/6a1kdc1olgg2rqd92lj0egjmc9/remubumupasolozotek.pdfIn PDF document text
    • https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/knmr1f3rab37ol3ej75okpi7sp/80681387660.pdfIn PDF document text
    • http://ipvoicenj.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6482b042b1---muzusebasilesi.pdfIn PDF document text
    • https://macleanpinesdrivingschool.com.au/wp-content/plugins/super-forms/uploads/php/files/146cc1adff7ed0476b345662afefceaa/32145554159.pdfIn PDF document text
    • https://www.litesourcenc.com/wp-content/plugins/super-forms/uploads/php/files/cb3b87eb142421c716019be24ed97f30/binubufibinerabaromojanaz.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160907e45114e3---pabapurixe.pdfIn PDF document text
    • https://506hlapeta.com/files/file/96055797830.pdfIn PDF document text
    • http://for-rent-leuven.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d0f4a2d726---rexozakuvedabi.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/ulaph3sp1l2h5v0r7ih809icm3/netigefajejupurupafira.pdfIn PDF document text
    • https://eltonltd.ru/sites/default/files/uploads/dageradorisinazasufomep.pdfIn PDF document text
    • https://www.americansummercamps.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608425b06df30---63062425464.pdfIn PDF document text
    • https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/rjglu7vih4138vmv7f4cs38kf3/1752147040.pdfIn PDF document text
    • http://grandchainfamilyfoundation.com/clients/85333/File/mobixarizazonapenavotas.pdfIn PDF document text
    • http://photo-preiss.com/upload_files/files/89930596351.pdfIn PDF document text
    • http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/16095388d84dcf---40151021057.pdfIn PDF document text
    • https://laxmigrouppune.com/wp-content/plugins/super-forms/uploads/php/files/229c93c88167e468ee8045866255d20a/13980536491.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/LPIa9PGmDLg/uplcv?utm_term=free+spins+in+coin+master+2020PDF 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_off0000ff9d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFF9D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off000117af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117AF 16748 bytes
SHA-256: 161e496f2540800475d4b6167dbd3c9ac8fe6259465fc45fff3a63bdc7565c3c
font_02_sfnt_off00014339.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14339 10708 bytes
SHA-256: b5a87f12632f7494bac34af80cf7fbf914957ecf4a8eda743278a37a773bc4a7

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