Malicious PDF — malware analysis report

Static analysis result for SHA-256 2ce6fe4055a3570b…

MALICIOUS

PDF

96.0 KB Created: 2021-06-26 11:31:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15
MD5: e7a8566703fc1d917f12772011120e8b SHA-1: 31d66c6253c1e86bdae4072c70c5986301915432 SHA-256: 2ce6fe4055a3570b07861cb1e71f6ec3a1c4730654c1378cf76ae3897cf81c59
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links to external websites, many of which are hosted on compromised WordPress sites or disposable domains, indicating a link farm for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were explicitly extracted, the nature of the links and the detection results point towards a phishing or malware delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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://amesmedicalservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160854b8f7ae77---56585038960.pdf In PDF document text
    • http://www.bewegeninarnhem.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16081af1b049ec---mokelatej.pdfIn PDF document text
    • https://asset-books.com/userfiles/file/mebadowolepasibewe.pdfIn PDF document text
    • http://agrion.org/upload/fichier/70945565692.pdfIn PDF document text
    • https://neoville.ru/wp-content/plugins/super-forms/uploads/php/files/9bc55fbc3f3862331676d9bee2686408/59717932843.pdfIn PDF document text
    • https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/160713bb1623d7---jakowesatufolifokiwim.pdfIn PDF document text
    • https://airbays.com/userfiles/file/xupimevupubagediperemojom.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608336648498b---gukikexasijesalaxokuka.pdfIn PDF document text
    • https://performanceltg.com/wp-content/plugins/super-forms/uploads/php/files/82d72b4c3af0d006d0e5993990b438e7/nosozojidikemenas.pdfIn PDF document text
    • http://raduzhniy.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5b14dd7323---23232964624.pdfIn PDF document text
    • http://securitydirect.it/wp-content/plugins/super-forms/uploads/php/files/e2e21262298a68eb485819797d797e84/loneromatuxeve.pdfIn PDF document text
    • https://searchlink.org/userfiles//file/wevixexuzadexazedaxo.pdfIn PDF document text
    • http://constantemails.com/userfiles/file/1623935257vokegovodogatobig.pdfIn PDF document text
    • http://www.platformliften.info/wp-content/plugins/formcraft/file-upload/server/content/files/160800d7cf1b1f---42877701681.pdfIn PDF document text
    • http://murasakijr.com/uploads/files/zabapozamesaxake.pdfIn PDF document text
    • https://opuntia.eu/wp-content/plugins/super-forms/uploads/php/files/1e3a3e4b352d41ca95edd4b60566d503/8755857264.pdfIn PDF document text
    • https://sportli.co.il/wp-content/plugins/formcraft/file-upload/server/content/files/160b2e91f770cf---31645335688.pdfIn PDF document text
    • http://k-yoga.org/file_upload/spaw_upload/file/20210610000958.pdfIn PDF document text
    • https://envomask.com/wp-content/plugins/super-forms/uploads/php/files/e76dc3c3b5d19cd92c918fa7bbf06d2f/kigopitidodevabal.pdfIn PDF document text
    • https://www.davidcosz.de/wp-content/plugins/super-forms/uploads/php/files/jduc025j0qtgvksfqqcamuleq6/kejixofizuxasekeb.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c7bffd1f9c---sodajupifafoko.pdfIn PDF document text
    • https://www.potterycommercials.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160833e1675a99---tifezagewajajig.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=rubrics+for+self+and+peer+evaluationPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000116d7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116D7 16564 bytes
SHA-256: c1eae689c85987c93183ef887b1a9274613ab5653525997b25bb6fca8ab2be88
font_01_sfnt_off00014170.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14170 10964 bytes
SHA-256: 72dfc7946562e8197b9a9ad2cdbcda373bd81ba37c64998d1867f3924de9e5b0
font_02_sfnt_off00015ad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15AD0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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