Malicious PDF — malware analysis report

Static analysis result for SHA-256 aea5454094d338ab…

MALICIOUS

PDF

81.5 KB Created: 2021-09-04 05:04:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 4fcad288ec9b912afaf70d553130affd SHA-1: 6446641c7b208d2e8189c407e7b5113700c03766 SHA-256: aea5454094d338ab640f8b8b2166f677f46e7fd227100bde1e33b16f5d1b7080
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier with high confidence. It contains numerous links to external websites, many of which are hosted on compromised WordPress sites or disposable domains, suggesting a link farm or phishing lure. The presence of embedded URLs and the nature of the heuristics indicate that this document is designed to redirect users to malicious content, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://www.waterlooarmsnewforest.co.uk/wp-content/plugins/super-forms/uploads/php/files/09b61e7bc8aa19bb83467f86203f9480/folusefiximudifu.pdf In PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb3fb74394---77408377749.pdfIn PDF document text
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/16116436717e09---pelogigewisolakezutiwu.pdfIn PDF document text
    • http://jhdljz.com/userfiles/file/1627427145.pdfIn PDF document text
    • https://sirikulsteel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a0d7c9a9911---64548252776.pdfIn PDF document text
    • https://antoinepanau.com/wp-content/plugins/super-forms/uploads/php/files/4ae993f03a7aa00fde6499c2fd2179eb/45000457186.pdfIn PDF document text
    • https://hirurgija.me//files/jojajonilexamu.pdfIn PDF document text
    • https://iamluno.com/wp-content/plugins/formcraft/file-upload/server/content/files/160740a47996d9---66597082957.pdfIn PDF document text
    • https://nusbetaja2.com/contents//files/vadorajawutiwipus.pdfIn PDF document text
    • http://billedbutikken.dk/articlefiles/file/41905166747.pdfIn PDF document text
    • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/1611457b9d93bf---vinixiba.pdfIn PDF document text
    • http://chhattisgarhsanskritboard.in/sharpinstitute/images/files/sevotuvutisuju.pdfIn PDF document text
    • http://pphu-joanna.pl/fckpliki/file/xusez.pdfIn PDF document text
    • https://www.mobytec.com.br/mobytec/wp-content/plugins/formcraft/file-upload/server/content/files/1609ce85bee1bc---44600619322.pdfIn PDF document text
    • https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/pochcvmnq89qfko2blkvro1su0/63691854809.pdfIn PDF document text
    • http://okwmd.com/upload/fckeditor/file/xixenilojigafakujuwixilo.pdfIn PDF document text
    • https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/494a01cfa74542e70f96d821c0b450f5/fetaxogogolifegedibapap.pdfIn PDF document text
    • http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/d98e4bdec3595d9842ffb4569d478f69/tolufajufegusututirusiro.pdfIn PDF document text
    • http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/160e067f452c45---23818342065.pdfIn PDF document text
    • http://esebtekstil.com/resimler/files/87651166842.pdfIn PDF document text
    • http://calebdobe.com/clients/875189/File/35820683007.pdfIn PDF document text
    • http://piemonteforyou.it/userfiles/file/63535186164.pdfIn PDF document text
    • http://naszymsladem.pl/upload/file/19795011390.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/YTWXjIUwRh0/uplcv?utm_term=valoracion+neurologica+completa+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_off0000db62.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB62 17132 bytes
SHA-256: e6dfde7e918fbeec616b0febb1b45c27be6d3641ee098da66a4879ee9f64c9b2
font_01_sfnt_off000107a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x107A0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011fb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11FB7 10864 bytes
SHA-256: 340baca87615755875a3b04e1f16abb84615662eb2cae47f7bcc440eea7b1791

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