Malicious PDF — malware analysis report

Static analysis result for SHA-256 04ddd81adb6e38b8…

MALICIOUS

PDF

80.2 KB Created: 2021-09-21 04:26:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 57337c531a2dfb691d4ce7d1bf950fbe SHA-1: c47df6d1b7ae816ab7fc6de6935d33fcbb5e2b80 SHA-256: 04ddd81adb6e38b8719a7628d336bc80fac185548eacd3677ee4dee7836d4323
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URLs, suggesting it functions as a link farm or redirection mechanism to potentially malicious sites. The PDF structure and embedded URIs point towards an attempt to deliver a payload or phish users.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://pistant.ru/uplcv?utm_term=how+to+check+daily+data+usage+in+android PDF link annotation
    • http://advocaatindex.nl/images/uploads/78113646672.pdfIn PDF document text
    • http://gnatowski.pl/attachments/file/jazepimibeloxejovejofeg.pdfIn PDF document text
    • http://tuecpa.com/file_media/file_image/file/66042415855.pdfIn PDF document text
    • https://s-serviss.lv/userfiles/file/tawixap.pdfIn PDF document text
    • https://threadworx.com/thread/admin/uploads/file/nivubekomaxipodo.pdfIn PDF document text
    • http://wingprocess.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/pakavorur.pdfIn PDF document text
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614828c316f81---67247660723.pdfIn PDF document text
    • http://japhina.com/upload/file/99281645821.pdfIn PDF document text
    • https://limberhurstgallery.com/imageuploads/file/wobetuwosorizobodudi.pdfIn PDF document text
    • https://ancoraeducacion.com/images/vavifivolonaxanudumixu.pdfIn PDF document text
    • https://rimsball.com/ckfinder/userfiles/files/70666523028.pdfIn PDF document text
    • https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613c3a8a54721---31652592871.pdfIn PDF document text
    • https://ctcitsupport.com/media/files/13061616208.pdfIn PDF document text
    • http://cortabellanews.com/userimages/24725132000.pdfIn PDF document text
    • http://xn--12cmi2byac9cdhd0hra6d7bxkwbgj1gch.com/user_img/files/pifozivozozizikemokuwiwu.pdfIn PDF document text
    • http://www.insight-assessment.com/ckfinder/userfiles/files/funupikekajalitebux.pdfIn PDF document text
    • http://nzozkrowodrza.pl/uploads/editor/file/33921927180.pdfIn PDF document text
    • http://chickendaylacrescenta.com/uploads/files/divaxologovolijigijaresox.pdfIn PDF document text
    • https://horkolas-gatlas.hu/ufiles/file/zekabipepurodeta.pdfIn PDF document text
    • https://centrorevisionimonregalese.it/file/75722953450.pdfIn PDF document text
    • https://gallerylingard.com/uploads/file/93101441855.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_off0000d107.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD107 11032 bytes
SHA-256: 956145ff81af51f03362947b0ed2d6229871f7b66557991d8a47fa38d2619915
font_01_sfnt_off0000ea7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA7C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001028e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1028E 18856 bytes
SHA-256: 672e87ca48967dbde41617087533039540c442adbbec8886865a2277c04f12af

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