Malicious PDF — malware analysis report

Static analysis result for SHA-256 2322b2eccae09622…

MALICIOUS

PDF

83.5 KB Created: 2021-09-14 07:28:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: c7c89311adb089316100f94113044fb2 SHA-1: 35502e5fdbd7d7d0b3c0e40f8788b8096f6b9599 SHA-256: 2322b2eccae0962275a650e65077e99be43ded7b6717789b1919dc8e778c3204
126 Risk Score

Malware Insights

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

The PDF contains numerous embedded URLs pointing to a link farm, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links suggest it's designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 http://ballmillfactory.com/d/files/34150219079.pdf In PDF document text
    • http://studiorapizza.it/userfiles/files/xasitabejob.pdfIn PDF document text
    • http://schokofontaenen.de/idata/84237153597.pdfIn PDF document text
    • http://okna-stv.ru/userfiles/files/75010891813.pdfIn PDF document text
    • http://yevres.fr/ckfinder/userfiles/files/wibofeledajorizumu.pdfIn PDF document text
    • http://ctyrkolky-gamax.cz/data/dokumenty/bamapowiritepagetasez.pdfIn PDF document text
    • https://kebecelectrique.com/upload/editor/file/beduluwojukes.pdfIn PDF document text
    • http://shangyi-pump.com/uploads/file/140149251177.pdfIn PDF document text
    • http://kaztelcom.kz/ckfinder/userfiles/files/zujevezuneti.pdfIn PDF document text
    • https://phuketwebstudio.com/ckfinder/userfiles/files/demekifafejaxazupavaka.pdfIn PDF document text
    • https://tonthephunglan.vn/upload/files/93159666807.pdfIn PDF document text
    • http://slkuang.com/v15/Upload/file/20219111529208870.pdfIn PDF document text
    • http://tienhasteel.com/app/webroot/upload/files/15554690427.pdfIn PDF document text
    • http://kasargod.net/uploads/file/lezub.pdfIn PDF document text
    • http://zagazzo.com/userfiles/file/25767213145.pdfIn PDF document text
    • http://duda-tech.pl/dudatech/upload/file/sotezuxoge.pdfIn PDF document text
    • https://psfund.org/public/uploads/files/cms_files/57980619422.pdfIn PDF document text
    • http://perfect-aerosol.eu/userfiles/file/madasegisumazimipopinud.pdfIn PDF document text
    • http://veterinariogiardinelli.it/userfiles/files/94618211418.pdfIn PDF document text
    • https://texigo.tw/upfile/files/2021/09/06/xetipobonoxawo.pdfIn PDF document text
    • https://sportsht.com/userfiles/file/wazatakivajik.pdfIn PDF document text
    • https://webdatedepot.com/userfiles/file/sevojibapi.pdfIn PDF document text
    • http://roomyab.ir/basefile/roomyabir/files/19449525116.pdfIn PDF document text
    • http://bacvietexpress.com/upload/userfiles/files/jonamu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=how+to+remote+play+ps4+on+androidPDF 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_off0000d9af.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9AF 20980 bytes
SHA-256: 7423464056c0ec6e91d9eafec2c9463eb800a47d0b30dd18403490eee595563f
font_01_sfnt_off00010f56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F56 10824 bytes
SHA-256: 80c31adf3f73757adf3f6a4152c6fb084951366715fd30cc5d7773e75f90ddb3
font_02_sfnt_off00012859.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12859 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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