Malicious PDF — malware analysis report

Static analysis result for SHA-256 65be7e3a993227bf…

MALICIOUS

PDF

210.0 KB Created: 2021-07-21 19:07:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 55a806f3bfe3126bce0cec677a6b943e SHA-1: c7bdccabc41fd96db8c707ca9f7da02c7568502d SHA-256: 65be7e3a993227bf6e72321eedbbb5c0c6193fd7b2fc60ba4f3c686e82e33f5b
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is often used to exploit vulnerabilities or download additional malicious content. Several URLs point to compromised websites, suggesting an attempt to host or distribute malware. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9838

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.
  • 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 http://ildungrice.com/fileupload/fckeditor/file/lajawikojidozoregi.pdf In PDF document text
    • https://erinmillssmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/3fuqkh40cg252jmrc93k198ij4/lovoxu.pdfIn PDF document text
    • https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/8b6b86783d2abd9faedefdd429fe7cc1/xinaxiworuguba.pdfIn PDF document text
    • http://handbook.hu/upload/page/file/gixene.pdfIn PDF document text
    • https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/l9idjlcao2g2um15r0gjmuc4qg/43214165564.pdfIn PDF document text
    • http://jikaramen.com/uploads/files/wesem.pdfIn PDF document text
    • http://taketty.xyz/js/ckfinder/userfiles/files/71505223204.pdfIn PDF document text
    • https://theshairpodcast.com/wp-content/plugins/super-forms/uploads/php/files/8dbe8ab68e8a0f156d112ecb2121169c/54338073620.pdfIn PDF document text
    • https://chetanaus.org/bheru/uploadfiles/file/36903616190.pdfIn PDF document text
    • https://sunpower.lv/ckfinder/userfiles/files/61480223568.pdfIn PDF document text
    • https://clickkedai.com/userfiles/file/38817061295.pdfIn PDF document text
    • http://www.majoriscambio.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16077cb4f0cd47---mitajejozaxuxagax.pdfIn PDF document text
    • https://maydongy.com/wp-content/plugins/super-forms/uploads/php/files/7bdeaj5rl9jj3l5ecr5ot6lshj/18113738806.pdfIn PDF document text
    • http://haverfordhigh77.com/clients/e/e7/e7c5a96ea35a64a1345a575153f12e7e/File/kubozo.pdfIn PDF document text
    • https://castel.ro/userfiles/file/89978575769.pdfIn PDF document text
    • https://homini.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160a7c1f509aa6---kewefew.pdfIn PDF document text
    • https://parklanehotel.asia/userfiles/file/55827497481.pdfIn PDF document text
    • https://hoakhanh.vn/uploads/image/files/67328981099.pdfIn PDF document text
    • http://hoondb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607fa826a56a7---jaribobovutowexojibewen.pdfIn PDF document text
    • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/cd58e58914a872742be0cd37f1319694/lenobiporubido.pdfIn PDF document text
    • http://www.norestim.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16089cad4799b5---fibevaxexogur.pdfIn PDF document text
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/16091666ac07a4---bezupanazeger.pdfIn PDF document text
    • http://mobilesamara.com/img/files/file/19364115239.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/cv9VXjIrmdE/uplcv?utm_term=actress+demi+moorePDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0002d652.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D652 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0002ee64.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EE64 20260 bytes
SHA-256: 6f1a6b4a8c63309462daa936a288046781b2ea5fe2d2b2adc13b7bbdb95b3ebf
font_02_sfnt_off00032364.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32364 10200 bytes
SHA-256: 058290ea85458c73acf707499880082dca3fec1dba3e91a0d68e6638ef5002e8