Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee9ac2c29bc1f783…

MALICIOUS

PDF

87.0 KB Created: 2021-09-13 22:50:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 95341a6f43cf9798d85c5819794140a3 SHA-1: 08fdbb31a808142c087225d94b68dfded21b991f SHA-256: ee9ac2c29bc1f7831603fcb02b8144b056f60f66601ab38254f0f7ceade42032
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://chcial.ru/uplcv?utm_term=is+it+possible+to+know+who+is+stalking+you+on+instagram PDF link annotation
    • http://ambulatorioveterinariocamali.com/userfiles/files/xizudowasevuvozazipifi.pdfIn PDF document text
    • https://knurussian.kr/DATA/upload/files/202109110457589446.pdfIn PDF document text
    • http://aarogyamedico.com/userfiles/file/38011028525.pdfIn PDF document text
    • http://lamay.de/userfiles/file/46371778787.pdfIn PDF document text
    • http://mishor-uvk.com/uploads/files/868677457.pdfIn PDF document text
    • https://dondepodemosir.com/userfiles/file/jeborenoxuzewexaduj.pdfIn PDF document text
    • https://portalkucharski.pl/app/webroot/media/files/81642178437.pdfIn PDF document text
    • http://393citizen.com/upload/files/94977212394.pdfIn PDF document text
    • http://www.benyowsky.com/resources/files/21139329760.pdfIn PDF document text
    • http://ventss.ru/userfiles/files/50419335587.pdfIn PDF document text
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/212f37d9f05d5c13f7ec55d51818abba/joralin.pdfIn PDF document text
    • http://barudan.hk/UploadFile/file/20210905025446055.pdfIn PDF document text
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131f1fa1aee9---mukusizanifubeb.pdfIn PDF document text
    • http://zap-interactive.com/uploads/files/xixifobop.pdfIn PDF document text
    • https://ccskin.com/geektic/files/xinebulubosuzamimel.pdfIn PDF document text
    • https://360clothing.in/home/www360cl/public_html/uploads/images/files/mikikuruparemex.pdfIn PDF document text
    • http://hemeringen.de/ckeditor_ablage/userfiles/files/11058235356.pdfIn PDF document text
    • https://bya-ingenieria.com/ckfinder/userfiles/files/14327754942.pdfIn PDF document text
    • https://www.bbmnetlicitacoes.com.br/cms/ckfinder/upload/files/55433271689.pdfIn PDF document text
    • http://nessium.fr/userfiles/file/396177913.pdfIn PDF document text
    • http://clinivetmadonnadirosa.eu/userfiles/files/92682195615.pdfIn PDF document text
    • https://soosekszer.hu/upload/files/mesefitifofunot.pdfIn PDF document text
    • https://umiyawoodworks.com/fckdb/userfiles/file/64463255031.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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ed19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED19 17960 bytes
SHA-256: bc2aae4976e64f128ce339128a73e9657928a7a8e39d284700897203ed58cb45
font_01_sfnt_off00011c1d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11C1D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013434.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13434 11180 bytes
SHA-256: 73ee8914c4d016390b47f6e58912235dc9d6e1d91ca0c259d4e8101239731f5c

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