Malicious PDF — malware analysis report

Static analysis result for SHA-256 8497dfaf2b740511…

MALICIOUS

PDF

83.6 KB Created: 2021-09-01 15:08:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: ad841d636c1f6f679e51eccd27fb595c SHA-1: f4dd8523d8649f94654e3866b6831ff837934f0e SHA-256: 8497dfaf2b74051105df5c2084a5c7d434fa7c5c2541732f909fd423289c84e8
156 Risk Score

Malware Insights

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

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning model with high confidence. It contains numerous links, many pointing to potentially compromised or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of external URI heuristics further supports the attack pattern of luring users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://xn--80aaa1arbfjoe3bzh.xn--p1ai/data/files/madareresokinodakenin.pdf In PDF document text
    • http://passionsavannah.com/clients/0/0a/0a61c075fa1d7d91f8ce2ef588f7e9ce/File/48436850412.pdfIn PDF document text
    • http://oticonshop.net/ckfinder/userfiles/files/xosew.pdfIn PDF document text
    • https://k-kompany.ru/wp-content/plugins/super-forms/uploads/php/files/06a3b4aedae6cc439dc74c2ee008ea35/68223074134.pdfIn PDF document text
    • http://xn--80aaffebba2apgigwiiececnggk9e4k.xn--p1ai/pict/file/99209346756.pdfIn PDF document text
    • http://chapraptti.org/userfiles/file/megokepozijazalomuruzowo.pdfIn PDF document text
    • http://elonsummerstorage.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ea0f139f51---futidumux.pdfIn PDF document text
    • https://agermag.ro/mm/file/44300035636.pdfIn PDF document text
    • https://avvocatoboretti.com/file/kuwawexanolaz.pdfIn PDF document text
    • http://solyaris.pro/admin/ckfinder/userfiles/files/tirubudemaxaxatozopos.pdfIn PDF document text
    • http://vetranhtuong.info/luutru/files/lasate.pdfIn PDF document text
    • http://caratow.nl/userfiles/file/juranatelugegi.pdfIn PDF document text
    • https://shriayurvednagpur.org/public/ckfinder/userfiles/files/48209170882.pdfIn PDF document text
    • http://etenindex.nl/images/uploads/zumonuladerawefinemixeb.pdfIn PDF document text
    • https://aquafilling.com/userfiles/file/kulutorofaxujerozek.pdfIn PDF document text
    • http://cameronhaddock.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b92b4acf11---73666114877.pdfIn PDF document text
    • https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/30ccafc748e4f7cbfdb16219c5bc66c2/98360408932.pdfIn PDF document text
    • http://33podarka.ru/pictures/files/221122283.pdfIn PDF document text
    • https://www.medipratik.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c74fa01b44---sinuzefekewiwodisupaforu.pdfIn PDF document text
    • https://www.advids.io/wp-content/plugins/formcraft/file-upload/server/content/files/160aeb63b52627---51215866207.pdfIn PDF document text
    • https://watfordfairtrade.org/app/webroot/img/files/pisap.pdfIn PDF document text
    • http://www.mtpartnersfl.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076bf1f046ba---jamexaferepewat.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=ready+or+not+streamingPDF 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

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_off0000e162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE162 17924 bytes
SHA-256: d71016cce32501bb5fb38f231b755cfe51570c014c1a7a3a80e644152d802bbd
font_01_sfnt_off00011084.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11084 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001289b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1289B 10704 bytes
SHA-256: c4e60fc001c4280bedbdb5b2f25520a2bfcfe33d8439beeb207b31afa43c6cce

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