Malicious PDF — malware analysis report

Static analysis result for SHA-256 d614b256a1b4b32d…

MALICIOUS

PDF

71.7 KB Created: 2021-10-11 05:15:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: b9a50ca1bf93a1e284dcd32e4a343afd SHA-1: d50e88403dd235337c73b9f89efb5338298ae71b SHA-256: d614b256a1b4b32de367d6e54dfb4e23c9c2054f660ae425f8d1d79d2ed60030
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for executing malicious code within documents. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates the PDF is designed to host numerous links on disposable domains, suggesting a phishing or scam attempt. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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.lbf-cosmetics.com/website/wp-content/plugins/formcraft/file-upload/server/content/files/1615288fd96974---bimaj.pdf In PDF document text
    • http://happyhanool.com/ckupload/files/39999707902.pdfIn PDF document text
    • http://rybarict.cz/webpagebuilder/ckfinder/userfiles/files/7154540197.pdfIn PDF document text
    • http://eko-gospodarstwo.eu/files/file/xodilexidomeruki.pdfIn PDF document text
    • http://apnschool.in/singhania/downloads/file/45124455152.pdfIn PDF document text
    • https://whitesal.com/data/images/file/4563_20211009220206.pdfIn PDF document text
    • http://dailitara.lt/bites/uploads/file/75597464657.pdfIn PDF document text
    • http://raffaelecavazzoni.com/userfiles/files/duvudopazotegi.pdfIn PDF document text
    • http://supair-lux.hu/ckfinder/userfiles/files/tanalunesuzefebepuno.pdfIn PDF document text
    • http://wmc21.com/ckupload/files/veboruwapesudifebume.pdfIn PDF document text
    • http://vietcem.vn/public/default/ckeditor/files/puligugavosoduramikeso.pdfIn PDF document text
    • https://nghiepvu.udicmanpower.vn/uploads/news_file/63115399187.pdfIn PDF document text
    • http://sinice-rasy.cz/files/file/rizikelan.pdfIn PDF document text
    • http://kingsauto-bar.com/js/upload/files/kajib.pdfIn PDF document text
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613a77acd7b58---fuwarodegirudolajerob.pdfIn PDF document text
    • http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/1614991eff109b---lubexidigifi.pdfIn PDF document text
    • http://hotel-gerard-dalsace.com/upload/document/77487622082.pdfIn PDF document text
    • http://podiummoda.ru/userfiles/file/favaxuwasevejalim.pdfIn PDF document text
    • http://martom24.pl/martom/userfiles/file/5806104041.pdfIn PDF document text
    • http://giadinhmedia.com/uploads/files/pipidolarewemapesemar.pdfIn PDF document text
    • http://fapannimario.it/userfiles/files/74175566157.pdfIn PDF document text
    • http://juncheng.tw/upload/files/33801286182.pdfIn PDF document text
    • http://locke-3c.tw/uploads/files/202109210650225814.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=give+me+a+break+meaningPDF 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_off0000b78b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB78B 16388 bytes
SHA-256: 1eafcf4e297d45cf164f643963fdf8804ce99216b6e171b9b22a22283c7f7439
font_01_sfnt_off0000e1ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1AD 10356 bytes
SHA-256: 4ce899f0254777b48f00e0fbd8f462bc5936b29876f7ab9f2339d7b950806929
font_02_sfnt_off0000f90d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF90D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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