Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e222839cb457e1d…

MALICIOUS

PDF

81.8 KB Created: 2021-09-07 05:28:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 0ed72595c165722d389790c2fd4b472e SHA-1: d77c09c60a1f39d0695947c5b2d1a3a16e1e6f98 SHA-256: 9e222839cb457e1dbc408e57ac80bc396869bd968052397742175678dead3a3a
156 Risk Score

Malware Insights

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

This PDF was flagged by ClamAV as Pdf.Phishing.Trojan and by an ML classifier, indicating malicious intent. Heuristics identified it as a link farm hosted on compromised CMS uploads and disposable hosting, suggesting it's used to distribute phishing lures or second-stage malware. No scripts were extracted, but the structure points to a phishing or malware distribution campaign.

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 http://africansafaris-spain.com/FCKeditor/editor/filemanager/connectors/php/connector.php?Command=FileUpload&Type=File&CurrentFolder=%2Ffile/33186016529.pdf In PDF document text
    • https://www.pferde-fuer-unsere-kinder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a80e872b9e4---bulejodevaxotepujabi.pdfIn PDF document text
    • http://mgmkt.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1607c42636c1b9---mameguxejivojusutufegebef.pdfIn PDF document text
    • https://noukos.gr/wp-content/plugins/formcraft/file-upload/server/content/files/160c8eb01369be---17814472372.pdfIn PDF document text
    • https://championsforchildren.org/wp-content/plugins/super-forms/uploads/php/files/e4daf20e35270524a7b6d726016e7ffd/63940056567.pdfIn PDF document text
    • https://nusantarabet4d1.com/contents/files/kokewubosup.pdfIn PDF document text
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/160a37201d4859---sizevexojoxifajosij.pdfIn PDF document text
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161169bc2a99c5---20356819663.pdfIn PDF document text
    • http://clinicacomciencia.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160ed8793d6a43---46361620038.pdfIn PDF document text
    • http://grandinspirations.com/clients/75274/File/60610097526.pdfIn PDF document text
    • https://fitnessrev.net/wp-content/plugins/super-forms/uploads/php/files/kdn9uapsqjtp49pel4r2rvbq13/63956464681.pdfIn PDF document text
    • https://flyags.com/editorResources/file///warugapiritik.pdfIn PDF document text
    • https://didacostruzioni.it/userfiles/file/vagawazerakunovegenenaxa.pdfIn PDF document text
    • https://globalazeri.az/wp-content/plugins/super-forms/uploads/php/files/hafhu4vllbg6g5i6iguphsek01/vurit.pdfIn PDF document text
    • http://zamokugrofa.sk/admin/fckeditor/file/97830885029.pdfIn PDF document text
    • https://eyestech.in/wp-content/plugins/super-forms/uploads/php/files/dkqea1iu58bsufgg9ibv2i5m7p/getupiwigulatoxipelopibup.pdfIn PDF document text
    • http://www.fliesen-brill.de/wp-content/plugins/formcraft/file-upload/server/content/files/16080f8e150ecb---64380819146.pdfIn PDF document text
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160dad7b2e195c---71294858619.pdfIn PDF document text
    • http://klubalfa.org/img/userfiles/file/52065151985.pdfIn PDF document text
    • https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082721803554---gevakuzukoniwuka.pdfIn PDF document text
    • https://qqhanoman.com/contents//files/mamojaterojapazavikefin.pdfIn PDF document text
    • http://www.verneteco.com/ckfinder/userfiles/files/segewo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/cv9VXjIrmdE/uplcv?utm_term=benefits+of+english+language+learning+pdfPDF link annotation
    • http://pro.ovh.net/~tribuene/images/banque/file/giwiter.pdfIn PDF document text
    • 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_off0000db5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB5E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f370.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF370 17504 bytes
SHA-256: e28744b62662d2cd9499065b3b1424609c150392ec4c5ab10bbb27269d0c9edb
font_02_sfnt_off000120cf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120CF 10932 bytes
SHA-256: e493ac9e60384ba368b3068639e52c663baed7ac6228a2ab5d1e413505228469

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