Malicious PDF — malware analysis report

Static analysis result for SHA-256 2317f3d226fb5427…

MALICIOUS

PDF

83.0 KB Created: 2021-09-17 21:08:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: 7190121d0a3ce52279133ff156beac70 SHA-1: b62a50d96f8e62f27779dceb9badb5234663f7ab SHA-256: 2317f3d226fb5427492a80778d74cd83bf01358091acf5e33691a0c5321a7e56
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by multiple heuristics, including ML and ClamAV, as malicious. It contains numerous external links, many pointing to disposable domains, suggesting a link farm or phishing lure. The presence of embedded URLs and the 'ML_NYX_PDF_MALICIOUS' heuristic indicate malicious intent, likely to redirect users to harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://oniceh.ru/uplcv?utm_term=jigsaw+puzzle+source+code+in+android PDF link annotation
    • http://varadimasszazs.hu/uploads/files/62077378152.pdfIn PDF document text
    • https://arnetbilgisayar.com/upload/ckfinder/files/vukewelopaxixilerobilowa.pdfIn PDF document text
    • http://kmjmt.com/news/upload/file/2109152158151648909n026u.pdfIn PDF document text
    • http://studioscoponi.eu/userfiles/files/87123698336.pdfIn PDF document text
    • https://www.piramideidiomas.com/ckfinder/userfiles/files/vulebefapasedufositadatos.pdfIn PDF document text
    • http://mcap.cz/images/uploadedimages/file/19270561808.pdfIn PDF document text
    • http://kiddeefire.com/media/userfiles/files/bafivubamu.pdfIn PDF document text
    • http://architectureanddesign.it/userfiles/files/71111442578.pdfIn PDF document text
    • https://gjbuyerbroker.com/userfiles/file/44511713947.pdfIn PDF document text
    • http://pscemetery.com/userfiles/file/50591374214.pdfIn PDF document text
    • http://zs-oilfieldequip.ru/d/files/mumakowofimefejenus.pdfIn PDF document text
    • https://ego-sofa.tw/uploads/files/202109111425473387.pdfIn PDF document text
    • http://tfe-design.dk/userfiles/file/30670341491.pdfIn PDF document text
    • http://www.donboscovizag.org/images/files/kefezoxaxizuwijejelob.pdfIn PDF document text
    • http://optimaglobal.net/ckupload/files/nowovupekanifimuz.pdfIn PDF document text
    • http://konberdbio.com/upload/files/mozinaxizoligefexexi.pdfIn PDF document text
    • http://www.rify.us/cms-uploads/files/migolosapiwugun.pdfIn PDF document text
    • https://skykharchono.mn/editor/files/27482505932.pdfIn PDF document text
    • http://www.arborvitae.cz/ckfinder/userfiles/files/35519837320.pdfIn PDF document text
    • http://uekekb.ru/!upload/files/wobaginifak.pdfIn PDF document text
    • http://juentai.com/userfiles/files/84955427839.pdfIn PDF document text
    • http://giorgimpianti.com/userfiles/file/5176796395.pdfIn PDF document text
    • http://telekommarketing.com/firme_data/files/44059798504.pdfIn PDF document text
    • http://hospitalityroyal.com/upload_files/file/panexorudavax.pdfIn PDF document text
    • http://studiocalcinoni.com/userfiles/files/mabok.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_off0000e268.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE268 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fa7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA7A 16568 bytes
SHA-256: 189d32f098a9dff071ad9042a7ee31d2ffcb0b4723e1127ff279e6ab9fe82ca5
font_02_sfnt_off00012568.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12568 10828 bytes
SHA-256: bb136c8d19a7df9f625e9d37f8478eee266986af52129e67a96ffeb1fc977aa4

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