Malicious PDF — malware analysis report

Static analysis result for SHA-256 d56b7c2bca828829…

MALICIOUS

PDF

83.3 KB Created: 2021-09-12 15:05:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: bed736bec786002f673660e0c1b00637 SHA-1: ba2411191ebc8f9e05ea792854a3ebed2358579c SHA-256: d56b7c2bca828829bd0fdd3d849ee3559e3819d02421cc3a87b41050370c1f83
164 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and multiple URLs pointing to compromised WordPress sites, indicating a malicious intent to redirect users. The ML classifier and ClamAV detection strongly suggest this is a malicious PDF, likely used for phishing or distributing further malware. The embedded JavaScript is likely responsible for initiating the redirection or exploit.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613953de28258---98848120917.pdf In PDF document text
    • https://ienter.bg/files/24155875637.pdfIn PDF document text
    • http://clinicaveterinariaalbese.eu/userfiles/files/talonadimukanat.pdfIn PDF document text
    • https://webdatedepot.com/userfiles/file/78472141857.pdfIn PDF document text
    • https://avantkart.com/wp-content/plugins/super-forms/uploads/php/files/56bdrb2so0mjtjbl6sq7s09j6i/nejijutotunof.pdfIn PDF document text
    • http://esoftland.com/userfiles/file/mogikikig.pdfIn PDF document text
    • http://cukrarska-vyroba.cz/UserFiles/File/fumuzulilotumogalomegemig.pdfIn PDF document text
    • http://shesob.com/file/files/rigojusoze.pdfIn PDF document text
    • http://deauville.ru/files/file/xodasozukufurepa.pdfIn PDF document text
    • http://kovacsoltvaskerites.hu/images/file/66175252331.pdfIn PDF document text
    • http://moyamoya.center/images/hand_uploaded/files/futosenoramosotodatu.pdfIn PDF document text
    • http://hanahana.vn/media/ftp/file/59761787597.pdfIn PDF document text
    • https://www.colegiodomus.com.br/js/ckfinder/userfiles/files/lowuziporomujokaxer.pdfIn PDF document text
    • http://statsale.com/data/upload/ck/files/60412908674.pdfIn PDF document text
    • https://thebottombillion.org/business_school/uploads/file/fegirakune.pdfIn PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/16132a03a23dc3---75613562998.pdfIn PDF document text
    • https://fnb-concepts.com/images/uploads/files/72574794001.pdfIn PDF document text
    • https://g-stampo.com/pics/pages/file/gejaxisu.pdfIn PDF document text
    • http://queenart.kr/userData/board/file/duxegusibajow.pdfIn PDF document text
    • http://jmvlpslimited.com/ci/userfiles/files/10329111352.pdfIn PDF document text
    • http://spielundlicht.de/content_provider/documents/files/78576020548.pdfIn PDF document text
    • https://indiansabroad.uk/userfiles/file/86415770650.pdfIn PDF document text
    • https://sanagustin.cl/files/fezibesewaziboz.pdfIn PDF document text
    • https://www.edutechusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132fb5d13523---96027136792.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/BvfzZFkJO3s/uplcv?utm_term=once+upon+a+time+2017+full+movie+eng+subPDF 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_off0000de5d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE5D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f674.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF674 11396 bytes
SHA-256: bd8403be16451bb0db0a144a80a2aa4d92e63dbeb60a872d86e1bdc689c6268e
font_02_sfnt_off00011151.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11151 17864 bytes
SHA-256: bfbd5f7de75621ac666cb3348cf6ee58bc0b8f2ad6fbdedc98637956b7d6ce2d

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