Malicious PDF — malware analysis report

Static analysis result for SHA-256 0de2f087ed2adf18…

MALICIOUS

PDF

77.0 KB Created: 2021-09-08 05:57:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 47f5c9da4025e72f52e786d0b01611da SHA-1: 5a57a3cbafeb669b662981c261996d013fb30196 SHA-256: 0de2f087ed2adf18b8635107a36ba87e9a3463ac0b4605744826713755d1c6dc
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress sites, indicating a link farm designed to redirect users. ClamAV detection and ML classification strongly suggest malicious intent, likely phishing or malware distribution. The presence of multiple distinct hosts and a high number of PDF links further supports the link farm attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9907

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 http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/5dcde5416ea145032e42fe9fb84f39fd/74403821714.pdf In PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/35587d9c99e0ace9076c518ff6ff5fe2/puvorodajexuzesatebuxusi.pdfIn PDF document text
    • http://krevue.cz/UserFiles/File/41416265488.pdfIn PDF document text
    • http://alteredcompta.com/buddha/ckfinder/userfiles/files/gumeditisutefewuko.pdfIn PDF document text
    • https://hamzsabegi60szallo.hu/UserFiles/File/defibedajerusujunejud.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/0f75a5048d17e18f6a9cf194f1ed12d0/podabumenujadusafi.pdfIn PDF document text
    • https://astoriareiki.com/wp-content/plugins/super-forms/uploads/php/files/fa472bfd485f20baa66ee2ef174e38ee/37358615433.pdfIn PDF document text
    • http://prefinancovaniehypoteky.sk/res/file/88679881287.pdfIn PDF document text
    • https://legacyltg.com/wp-content/plugins/super-forms/uploads/php/files/8150b7aa1d09d1fe99e4952787d17794/pebijeb.pdfIn PDF document text
    • https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/e6fc5d1bfb4c3d26db549755cce4f9ef/fekumidububujimani.pdfIn PDF document text
    • https://www.picmephotoboothhire.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160a5f98dcb8bc---sepafamoxam.pdfIn PDF document text
    • http://atut-biuro.com/uploaded/file/57002002859.pdfIn PDF document text
    • http://www.iqubz.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612cc0cfacd2b---19637587969.pdfIn PDF document text
    • https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/c32f3c9e6e00f3e1da6f4e3d6baf7225/bosovosinuratavapi.pdfIn PDF document text
    • http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/95b671e8e9ad7ff91f5ddbfd138613de/ferotukur.pdfIn PDF document text
    • http://ednak.com/wp-content/plugins/formcraft/file-upload/server/content/files/161342d73af2e4---99818458725.pdfIn PDF document text
    • http://hanmih.com/userfiles/file/20210723001206.pdfIn PDF document text
    • https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/usfreipek6mnp1tjr68kfsc4rc/vuwudogax.pdfIn PDF document text
    • https://akapacha.com/userfiles/file/91038610556.pdfIn PDF document text
    • https://kisikana.hr/userfiles/file/50095759352.pdfIn PDF document text
    • http://coming-c.com/userfiles/file/vesodoxinuboz.pdfIn PDF document text
    • http://stilistspb.online/public/files/uploads/files/42505407417.pdfIn PDF document text
    • http://ildungrice.com/fileupload/fckeditor/file/jamozanazupapedo.pdfIn PDF document text
    • https://vydavatelstvoklett.sk/userfiles/file/48761647633.pdfIn PDF document text
    • http://www.aqsclimited.com/EditorImages/file/kobizataga.pdfIn PDF document text
    • http://miraesusan.com/ckupload/files/1849130304.pdfIn PDF document text
    • https://vashadvokat82.ru/wp-content/plugins/super-forms/uploads/php/files/b2ae5abefbc6ceebdee65f1c95995309/walivomi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=pidato+bahaya+narkoba+pdfPDF 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_off0000bff2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFF2 21768 bytes
SHA-256: d358e275ebbc679ca175dc821bbb7d54b8603c164444399fa702ce8a2bce2c1d
font_01_sfnt_off0000f5c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5C5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010ddc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DDC 10596 bytes
SHA-256: 06e3ca77afbcb95eada8a7f8fbaa5a1b6dff36d4ac131ca2535ef31c75176bb1

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