Malicious PDF — malware analysis report

Static analysis result for SHA-256 d302168834eb013e…

MALICIOUS

PDF

78.7 KB Created: 2021-09-11 07:01:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 3f6694961f8bc5f1e3769b0f3e35f5b1 SHA-1: 812d0d82a522354bb28adb4b5971a0aac826fd1a SHA-256: d302168834eb013ece289934f51966c3771cc8fb6442c5e3d24fba9bc7b36942
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 and contains embedded JavaScript. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://infrive.ru/uplcv?utm_term=software+for+samsung+galaxy+s3+mini+free+download PDF link annotation
    • http://cuborh.com/natelinhanew/js/ckfinder/userfiles/files/76457251711.pdfIn PDF document text
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16134c7051a9f2---39012932515.pdfIn PDF document text
    • http://ficfart.org/userfiles/file/mutalukudimaru.pdfIn PDF document text
    • http://badischer-kunstverein.de/ckfinder/userfiles/files/nemikotawawalazipug.pdfIn PDF document text
    • http://noithatmfc.com/media/ftp/file/dopibaxufuvukogu.pdfIn PDF document text
    • http://karmakonnect.org/DrumiBhatt/karmakonnect.org/Final/ckeditorimage/files/39750178124.pdfIn PDF document text
    • http://soles2walk.com/data/file/jijogerapifujik.pdfIn PDF document text
    • https://sakkestadbil.no/userfiles/file/22796140661.pdfIn PDF document text
    • https://zippy-inc.com/app/webroot/userfiles/files/6395513383.pdfIn PDF document text
    • https://shiprapublication.com/uniformkontakt/userfiles/image/files/tojamoxisuzakowabeli.pdfIn PDF document text
    • http://mayepnuocmia.vn/data/ckfinder/files/74095109838.pdfIn PDF document text
    • https://mbbs.hr/files/14275503056.pdfIn PDF document text
    • http://viprealestatebrokers.com/userfiles/files/wupetax.pdfIn PDF document text
    • https://xn--49st2et51duvk.com/upload/files/vasobebexovovinulodituren.pdfIn PDF document text
    • http://medizator.ru/ckfinder/userfiles/files/25594754606.pdfIn PDF document text
    • http://yoshitomo-kokubunji.com/jcfiles/file/67222970593.pdfIn PDF document text
    • http://kimyasaldubeller.com/upload/ckfinder/files/taluxuradube.pdfIn PDF document text
    • http://zlhk.ru/upload_picture/file/60555892014.pdfIn PDF document text
    • https://magyar-logyogyasz.hu/fileok/file/lugegotazunidar.pdfIn PDF document text
    • https://shen-su.eu/gfx/userfiles/files/wotexivoledi.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_off0000cd2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD2E 11344 bytes
SHA-256: 95ed2fb69eb79fd12553a8bab054db3350913e0d6f696023bdea996e3845c7cf
font_01_sfnt_off0000e7cb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7CB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000ffdd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFDD 18124 bytes
SHA-256: 11c06076cef10fd05853f46eeab807d9d864b5a06e2aa05c4ada4381ee2c2fff

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