Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ee28fb31b3691c8…

MALICIOUS

PDF

69.3 KB Created: 2021-09-20 12:56:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 975d37629659a262d3ce471388d6dfd6 SHA-1: 22f959f4ec26ee2b67433845007fcd1213c05ae3 SHA-256: 9ee28fb31b3691c8c20a252444fd473dde867c21ac163295e4f4bcc0abdd6d1d
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external URIs, indicating an attempt to redirect the user to malicious content. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware delivery. The presence of embedded JavaScript points to its use as a delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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
  • 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 http://www.dfdtrading.sk/ckfinder/userfiles/files/gevapulonu.pdf In PDF document text
    • https://feng-shuiworld.com/userfiles/file/16246779938.pdfIn PDF document text
    • https://hmanagement.net/userfiles/file/janut.pdfIn PDF document text
    • https://radekslodkiewicz.pl/files/file/59125723462.pdfIn PDF document text
    • https://justforjetscatering.com/userfiles/image/files/93328314020.pdfIn PDF document text
    • https://pemaboutiquehotel.com/assets/userfiles/files/bogewe.pdfIn PDF document text
    • https://globaldreamindia.com/webcms/file/gamudigifizawe.pdfIn PDF document text
    • http://ziguratex.com/helpdesk/app/webroot/img/userfiles/files/32277570488.pdfIn PDF document text
    • http://www.papelerialapiceros.es/ckfinder/userfiles/files/31607154057.pdfIn PDF document text
    • https://swaarm.de/app/webroot/upload/files/4697987359.pdfIn PDF document text
    • http://technoauto.jp/js/upload/files/bepomajapudav.pdfIn PDF document text
    • http://yilip.net/userData/board/file/xibufaliw.pdfIn PDF document text
    • http://nage-z.com/ckfinder/userfiles/files/vapupipexotowuwumoli.pdfIn PDF document text
    • https://boucherienabli.com/uploads/FCK_files/file/tenavuz.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/p8a6qcivujup11r8m6pv4bpm95/48526432448.pdfIn PDF document text
    • http://floralojistik.com/userfiles/file/bovazebumu.pdfIn PDF document text
    • http://3colorjazz.com/fckeditor/userfiles/image/9526600888.pdfIn PDF document text
    • https://www.hasmow.com.au/application/third_party/ckfinder/userfiles/files/19143431668.pdfIn PDF document text
    • http://herfon-machinery.com/images/ckfinder/files/20210901054550.pdfIn PDF document text
    • http://talcmanagement.com/uploaded_files/userfiles/files/51815595854.pdfIn PDF document text
    • https://cvzona.lt/resources/img/files/83118055708.pdfIn PDF document text
    • http://cabini.it/userfiles/files/fopigapepigasutudawivek.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=hide+online+god+mod+apkPDF 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_off0000b272.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB272 15248 bytes
SHA-256: 66a44dcc6114c8b51c855bf635a7be37a9eb36b4f92f0847d5b8bc304d6e3849
font_01_sfnt_off0000d8bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD8BF 10452 bytes
SHA-256: 110c1105e0fce676f3bb5eef93d27295a1b99db7bceac9c8984aeb65e05937a7
font_02_sfnt_off0000f01b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF01B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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