Malicious PDF — malware analysis report

Static analysis result for SHA-256 00e85eb22247ae7d…

MALICIOUS

PDF

86.2 KB Created: 2021-09-16 15:26:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: cdd27626f8ef8fa5965f624e4cfacae9 SHA-1: 5214b0e25deefb02261d638c0a2b9d7183a193ab SHA-256: 00e85eb22247ae7dafa9d877f1dd3a5d41575906ba7cc9c2fa14e1d93add8b6c
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, with one specifically identified as a potential lure for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites, aligning with spearphishing attachment tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9959

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://inwebjor.ru/uplcv?utm_term=peter+rabbit+runaway PDF link annotation
    • http://www.clc-engineering.com/siteuploads/editorimg/file/kojakavojorufakegejex.pdfIn PDF document text
    • http://pnmanagementsolutions.in/uploads/selafi.pdfIn PDF document text
    • http://www.reroofingbrisbaneqld.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16134271369004---mokobowaletiramizutepa.pdfIn PDF document text
    • http://majorpropertygroup.com/userfiles/files/rurotamawemufopewo.pdfIn PDF document text
    • http://zimmerei-possert.at/1294581874.pdfIn PDF document text
    • https://eurouniversal.eu/ckfinder/userfiles/files/xegoxujerazazugologokos.pdfIn PDF document text
    • http://zhongjiukeji.com/upload_fck/file/2021-9-14/20210914150014167997.pdfIn PDF document text
    • http://multi-accueil.fr/ressource/site-image/files/gezivifox.pdfIn PDF document text
    • https://vpmemorial.net/images/file/44221035572.pdfIn PDF document text
    • http://rdasesores.gestconcursal.com/editor/ckfinder/userfiles/files/wasabevejupezu.pdfIn PDF document text
    • https://braindevelopmentmaps-org.neurondevelopment.org/userfiles/files/97250458000.pdfIn PDF document text
    • http://uptindia.com/newsimages/file///kiwitutopukisitifa.pdfIn PDF document text
    • http://inistor.com/ufiles/files/27190855811.pdfIn PDF document text
    • https://nhatngudongkinh.com/upload/ckupload/files/jowaveluxemojesodilarik.pdfIn PDF document text
    • http://pes.edu.mn/ckfinder/userfiles/files/puwebiru.pdfIn PDF document text
    • http://marcelponjee.nl/ponjeefiles/file/kubawi.pdfIn PDF document text
    • https://www.sherpachristain.org.np/ckfinder/userfiles/files/xewexikar.pdfIn PDF document text
    • http://pincesorvarshop.hu/editor_up/91258936118.pdfIn PDF document text
    • http://enjoybowlramenandpoke.com/uploads/files/50752491318.pdfIn PDF document text
    • https://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131d464e934d---jenejabegetotawikakod.pdfIn PDF document text
    • https://holcom-wd.com/webroot/img/files/wesenotodevotejodiz.pdfIn PDF document text
    • http://nhabe.com.vn/ckfinder/userfiles/files/baruwibadapi.pdfIn PDF document text
    • https://serviceelectric.ca/userfiles/file/87040582326.pdfIn PDF document text
    • http://anhuizhkj.com/upload_fck/file/2021-9-1/20210901132749719463.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_off0000edbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEDBC 17940 bytes
SHA-256: ad0c0f4ed0c7e4cfd7fad1bf87c8392c3333ad4437598f29e6c2a187233a66b6
font_01_sfnt_off00011cbd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11CBD 10208 bytes
SHA-256: a0e24a4268612324af8c04c0d604b117d5335c9bdd89ac71be3edc9d18837d74
font_02_sfnt_off000133d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x133D5 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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