Malicious PDF — malware analysis report

Static analysis result for SHA-256 008f452017b363fb…

MALICIOUS

PDF

85.5 KB Created: 2021-07-25 09:05:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 3bd8c6c01894dd74371a9380a699f6b6 SHA-1: 74f689bedc858bd5378995590a62a342cd3ae987 SHA-256: 008f452017b363fbf266cd13ae569ddeffb46b6379a8b924b8bd7966cd634e54
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file contains embedded JavaScript, which is a common technique for malicious PDFs to execute code. The heuristics indicate that the PDF acts as a link farm, pointing to multiple compromised websites and disposable hosting, likely to distribute malware or conduct phishing. The ML classifier and ClamAV detection strongly suggest malicious intent, with the embedded JavaScript likely responsible for initiating the download or redirection to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://srp-galabau-rostock.de/wp-content/plugins/super-forms/uploads/php/files/5k0qcesn4062dbcvc1ugk15dgb/75500306948.pdf In PDF document text
    • https://photographerin.agency/wp-content/plugins/super-forms/uploads/php/files/9gli1p2vvq9thi4j99lj445vs5/16592090144.pdfIn PDF document text
    • https://www.funes.gob.ar/ckfinder/userfiles/files/jineludirixeviwiripekasi.pdfIn PDF document text
    • http://reicar.dk/userfiles/file/52809573935.pdfIn PDF document text
    • http://gphs84.com/clients/866382/File/21012833290.pdfIn PDF document text
    • https://www.arphplumbing.co.uk/wp-content/plugins/super-forms/uploads/php/files/kvdusea6firepsq75hlllgil3k/76556467908.pdfIn PDF document text
    • http://geostudio.eu/userfiles/files/25519870606.pdfIn PDF document text
    • http://fecirturizm.com/resimler/files/sorutelapijezoxan.pdfIn PDF document text
    • https://www.frankcapassoandsons.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d27e446bcd---dasodomaxewel.pdfIn PDF document text
    • http://andlupa.com/userfiles/file/kopovegazigo.pdfIn PDF document text
    • http://xn--dlek-5qa.com/admin/UserFiles/file/31215822938.pdfIn PDF document text
    • https://karapinarinsaat.net/userfiles/upload/file/70002527127.pdfIn PDF document text
    • http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/kht48fhiu48u23vu300aa1u201/duboxijimibamu.pdfIn PDF document text
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/160fcf31484ab5---kasunimufigir.pdfIn PDF document text
    • http://fabrykakonwersji.pl/wp-content/plugins/super-forms/uploads/php/files/1c3def4b08dc5e0aea0a029ccf16b830/donabu.pdfIn PDF document text
    • http://slenderclub.cz/ckfinder/userfiles/files/lumawokubeju.pdfIn PDF document text
    • http://garagehayashi.com/js/upload/files/39689561116.pdfIn PDF document text
    • http://domeinbeverdonk.be/assets/files/file/fikifuzurafusikonowaje.pdfIn PDF document text
    • https://honghow.com/ckfinder/userfiles/files/58103772112.pdfIn PDF document text
    • https://lerong.vn/wp-content/plugins/super-forms/uploads/php/files/c9cf71e9720f0912e1b03c2a0d71779f/xewubifax.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=how+to+write+a+weather+report+for+newspaperPDF 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_off0000ed55.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED55 10484 bytes
SHA-256: 583784d3134e8a284348390feec1be3ebc41b15637c1897e4c2f6bcea9f19d2f
font_01_sfnt_off00010527.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10527 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00011d39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D39 16608 bytes
SHA-256: af6e55925b929b87e9c103b57e61383d6a42e19e3aaeaa0fb5bc37b60663bba0

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