Malicious PDF — malware analysis report

Static analysis result for SHA-256 7dcca051b3236e03…

MALICIOUS

PDF

110.5 KB Created: 2021-07-27 02:41:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: dd5ee3d31be7eae3b44865812218d816 SHA-1: 361b9b2069358bc03e583eb303a7c4b6fc8592b8 SHA-256: 7dcca051b3236e03bf180905eb2ea91872cfa0d1cb9ff9078624fc683ef18ee6
156 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs pointing to compromised WordPress upload directories and other disposable hosting. These links likely lead to phishing pages or further malware downloads, aligning with a spearphishing attachment attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9989

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://louvre.lv/res/wysiwyg/file/89623679458.pdf In PDF document text
    • https://namastehealth.in/wp-content/plugins/super-forms/uploads/php/files/3s3ocnc79f3c0h5g1ve3ql2c6c/22168417639.pdfIn PDF document text
    • http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aaa21147ef9---jizumewifaxasev.pdfIn PDF document text
    • http://rickgrisolia.com/userfiles/files/25582009218.pdfIn PDF document text
    • https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/39358895666.pdfIn PDF document text
    • http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/160f764c3be638---21851415736.pdfIn PDF document text
    • http://xn----8sbnbd9chja.xn--p1ai/userfiles/file/mulinusoximix.pdfIn PDF document text
    • https://gbeequestriansurfaces.com/wp-content/plugins/super-forms/uploads/php/files/33g3eta1aqfp4fbjhiuke43hh9/68063693396.pdfIn PDF document text
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/160da18d2b54c8---vigubunasawodatit.pdfIn PDF document text
    • https://bevelec.com/bevelec/dossierMois/file/64420869826.pdfIn PDF document text
    • https://www.mclarenpress.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aba90622f03---66588805387.pdfIn PDF document text
    • https://eletvital.hu/uploads/files/powojibolaf.pdfIn PDF document text
    • https://outsourcedbackoffice.co.uk/wp-content/plugins/super-forms/uploads/php/files/393a024b8e1920f54019e326a620e29b/63058454294.pdfIn PDF document text
    • http://slmj8.com/data/userfiles/files/pixajowa.pdfIn PDF document text
    • https://doanhnghiepvietnam.org/img_duhoc/files/dapunotavo.pdfIn PDF document text
    • http://eaeocs.com/clients/c/c7/c75ed17bfa54634cfc1039f1b599a7e7/File/tulasuxetasifatusuzap.pdfIn PDF document text
    • https://www.alapan.org/fckimages/file/sesaxemotuxazuxex.pdfIn PDF document text
    • http://ahlhy.com/uploads/file/30045358824.pdfIn PDF document text
    • http://er-trans.com/img/produkty/files/ditotero.pdfIn PDF document text
    • http://skincarebylaura.com/clients/862251/File/19509121210.pdfIn PDF document text
    • http://bjaimama.com/data/upload/2021/05/file/202105251209242400.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=what+hormones+does+the+adrenal+cortex+secretePDF link annotation
    • https://www.posluh.hr/ckfinder/userfiles/files/gumixegasotanuvexe.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_off000149ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x149CE 10640 bytes
SHA-256: 53405ec8b3a17de41c625fa1ab3f52a839e2ade60d2823e922a44e037d27e1b2
font_01_sfnt_off0001620c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1620C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00017a1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17A1E 18272 bytes
SHA-256: 4ecbb66a9aacfe542ce04de669c7dd7fa6438cbba9099888cef8c766c3497e6a

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