Malicious PDF — malware analysis report

Static analysis result for SHA-256 bbc773ad7070fb82…

MALICIOUS

PDF

88.9 KB Created: 2021-06-27 20:10:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 17f0620288cb3728c44657db95d83d7a SHA-1: 69030af77edf6c25ac28e5052329c57e96d4fa8f SHA-256: bbc773ad7070fb82f6febd90d59ce0d6aaa8b681112d5cd5b5f089ca4b778486
156 Risk Score

Malware Insights

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

The PDF contains numerous links pointing to compromised WordPress sites, identified by heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM'. The ML classifier and ClamAV detection strongly indicate malicious intent. These links likely serve as a distribution point for further malicious content or phishing attempts.

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 https://fatheragneliti.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609fa1fb7be0e---27425117448.pdf
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1609e0bfda4561---455236437.pdf
    • http://chagatea.ru/wp-content/plugins/super-forms/uploads/php/files/196b7b12db92bc78f182f0c893b9ddba/tosorewigeg.pdf
    • http://efuegypt.org/userfiles/file/40640202444.pdf
    • https://coevent.ru/upload/files/sepatow.pdf
    • https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/f6b0629a481e525cbb02f18162280741/zudidopofasupanu.pdf
    • http://perles-del-beya.com/userfiles/file/bisezuvebafimuxobubilom.pdf
    • http://am-assets.com/aom/magnolia/userfiles/file/84017513675.pdf
    • http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1606eac2fdc38f---48320905107.pdf
    • http://www.alwaysflorida.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608389d12829c---7516488701.pdf
    • https://www.quatainvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16072be692bb4b---34078384527.pdf
    • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096a99941954---96002831787.pdf
    • https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ef56eee0af---waguromipilasimipu.pdf
    • https://insights3.com/wp-content/plugins/super-forms/uploads/php/files/4a42ab505cfb2e870babcdac800cebfa/binasi.pdf
    • http://businessplan-capalpha.fr/mbp/upload/images/images/upload/ckfinder/28167742880.pdf
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e3b7f5c563---88381595911.pdf
    • https://www.keystonecare.co.uk/wp-content/plugins/super-forms/uploads/php/files/2d4fecf7e71941f6262ef83bb7c51032/9932763817.pdf
    • https://www.alertgy.com/wp-content/plugins/super-forms/uploads/php/files/1d7017bc4f8baa6144b30ef30ad37a1d/72968958811.pdf
    • https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ac83fde4175---79787557607.pdf
    • http://pcmcpropertyblog.com/wp-content/plugins/super-forms/uploads/php/files/6161bfd6dba3c4155b0062a30ce3bc87/99595242166.pdf
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f002782e96---26029439426.pdf
    • http://jorkurojus.com/userfiles/file/jipobujowa.pdf
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/16087f38e07cbc---35345393002.pdf
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=the+polar+express+real+train
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f83d.bin
21f902ece746b7fd04da3ff49c46dfebb5f39e2fb2a4b2e4881603b11326e8f5		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF83D 10412 bytes
font_01_sfnt_off00010fd2.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10FD2 16792 bytes
font_02_sfnt_off000127e4.bin
9091ed3cec16b69f35f82d883430c6950c69d75389b1c73e123d1407af620c3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x127E4 17724 bytes

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