Malicious PDF — malware analysis report

Static analysis result for SHA-256 592c50e94899a827…

MALICIOUS

PDF

75.3 KB Created: 2021-09-22 17:59:23 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: 6a281024a02283cfb6a662108c9d48a7 SHA-1: de07b4332fd8461faeb57899bb77f31ae50f19b3 SHA-256: 592c50e94899a8271a27cb0fd3e306faf9bfb4d8576bcc96e393437573200602
126 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9919

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=crazy+stupid+love+online PDF link annotation
    • http://itaxabc.com/userfiles/file/20210908015135_459301131.pdfIn PDF document text
    • http://lblussana.it/images/file/13648503503.pdfIn PDF document text
    • http://thcscatquea.hoaiduc.edu.vn/ckfinder/userfiles/files/41671010856.pdfIn PDF document text
    • https://www.novet.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613f5ddb1b251---6524630419.pdfIn PDF document text
    • http://eluvial.com/sites/all/sites/eluvial.com/files/65742019883.pdfIn PDF document text
    • http://rancholasmonturaspremios.com/campannas/file/xutarelevutaxolilukubiki.pdfIn PDF document text
    • https://macroedunet.com/userfiles/file/lozufotofoxazolanimip.pdfIn PDF document text
    • http://litroshaber.net/resimler/files/guvaponojalutitis.pdfIn PDF document text
    • http://studiobaldizzone.com/userfiles/files/bodebisasefogazalumakutaj.pdfIn PDF document text
    • http://fueandhair.com/userfiles/files/wutep.pdfIn PDF document text
    • https://curtain.jinware.com/upload/files/datimigodolaxunenelumuxi.pdfIn PDF document text
    • http://scsychem.com/upload/files/81926016217.pdfIn PDF document text
    • http://bibrka-school.org.ua/ckfinder/userfiles/files/vawakemu.pdfIn PDF document text
    • http://tornyanggrace.com/upload/file/kepoger.pdfIn PDF document text
    • https://al-farh-iq.com/upload/userfiles/file/zalepekugopitutomokegubas.pdfIn PDF document text
    • https://mylin.in/ckeditor/ckfinder/userfiles/files/70209786360.pdfIn PDF document text
    • http://barcabianca.eu/upload/file/36210050658.pdfIn PDF document text
    • http://aumnat2car.com/ckfinder/core/connector/php/upload/files/tutosuzaw.pdfIn PDF document text
    • https://olivierdaulte.com/ckfinder/userfiles/files/velegojemuxusedu.pdfIn PDF document text
    • http://asfalon.com/__files/file/3314309951.pdfIn PDF document text
    • http://aokisuper.com/ckfinder/userfiles/files/pegutonevoget.pdfIn PDF document text
    • http://1utilaje.ro/mm/file/62075863654.pdfIn PDF document text
    • http://suurelepa.ee/data/file/danebuxuwita.pdfIn PDF document text
    • http://deborahkay.com/ckfinder/userfiles/files/9035423783.pdfIn PDF document text
    • http://sun-apartments.pl/data/pages/52661861129.pdfIn PDF document text
    • https://www.northamericatalk.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614a00c5e1ea6---mapurapobejajumepa.pdfIn PDF document text
    • https://www.hotel-restaurant-plainfaing.fr/ckfinder/userfiles/files/42161340022.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_off0000c14a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC14A 16916 bytes
SHA-256: 5a1f2ab368968efee60279eff0dde8e49486b933b9b61b4ac8ead5429b189990
font_01_sfnt_off0000ec61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEC61 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00010478.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10478 10756 bytes
SHA-256: c21ca8c4d43a5a63954e640c9b15d8bb2bcdf0c1c487e557d91e6e2817e043a3

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