Malicious PDF — malware analysis report

Static analysis result for SHA-256 eea287ce04a591b5…

MALICIOUS

PDF

78.8 KB Created: 2021-09-04 17:56:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 482fc8e8460a1fe800cf1e07a24e553d SHA-1: 19b0a787b651f0b65c7556835b976477a6640898 SHA-256: eea287ce04a591b5e57a7d9db41b574ba693573023fe6fa1382595dcf863de3a
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which point to compromised WordPress sites or disposable hosting, indicating a link farm designed to redirect users to potentially malicious content. ClamAV and ML classifiers strongly indicate maliciousness, consistent with a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9958

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://gillsandgeckos.com/userfiles/file/82362400116.pdf In PDF document text
    • https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/77669mhjfi6f68r1dg5000qtn8/boruv.pdfIn PDF document text
    • http://www.derbysignandgraphics.com/uploads/file/41189055153.pdfIn PDF document text
    • http://billagelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/99890114484.pdfIn PDF document text
    • https://bio86.net/fichiers/2364301729.pdfIn PDF document text
    • http://elementsgogreen.com/userfiles/file/laxinizedasub.pdfIn PDF document text
    • http://crystalnymph.by/wp-content/plugins/super-forms/uploads/php/files/e0a1ce82476ce189798955ea5244d6e0/86015283223.pdfIn PDF document text
    • http://labuchedeberce.fr/userfiles/file/74955646790.pdfIn PDF document text
    • http://adamlegal.com/userfiles/file/76350656615.pdfIn PDF document text
    • http://handbook.hu/upload/page/file/dixavaxanes.pdfIn PDF document text
    • http://shethof.ch/cgi-bin/dynamisch/file/lasetotuxokux.pdfIn PDF document text
    • http://amdind.com/userfiles/file/vefisuxugem.pdfIn PDF document text
    • https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/961eee33c9b1346918dd46e32411185f/titero.pdfIn PDF document text
    • http://ed-web.cz/userfilesfile/midakesodemoselav.pdfIn PDF document text
    • https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/cbo33utfch0dlti4m99smft3bb/gasobusaworavopasude.pdfIn PDF document text
    • http://kajsanordstrom.com/userfiles/files/56854871801.pdfIn PDF document text
    • http://chaukitchen.com/uploads/files/68015800326.pdfIn PDF document text
    • https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/ce585b030c0ca0d42a4eec917bd84d4a/ruzif.pdfIn PDF document text
    • https://enville.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608be870e820c---zojujob.pdfIn PDF document text
    • http://webscape.co.bw/wp-content/plugins/formcraft/file-upload/server/content/files/1606f9d35c6e01---74851857828.pdfIn PDF document text
    • https://www.jahnigterbraak.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160cbfad26407a---4636067988.pdfIn PDF document text
    • http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/e3546d46f6fe337f644dcf908a39ef52/62564833667.pdfIn PDF document text
    • http://granitemountainranch.net/userimages/baputubetamumefopen.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=rook%27s+textbook+of+dermatology+free+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_off0000ce26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE26 17444 bytes
SHA-256: f90c15827d614d1f53ca4ad83a86a9b291110024301d6b1b90740d41898978d8
font_01_sfnt_off0000fb7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB7A 11172 bytes
SHA-256: 808268025c3810ee6863df4f73d0037479262f28f582ed7bfc6ba1cee8364de0
font_02_sfnt_off00011566.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11566 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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