Malicious PDF — malware analysis report

Static analysis result for SHA-256 5fff5ae9612e8e40…

MALICIOUS

PDF

79.5 KB Created: 2021-09-21 16:05:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 5310bd62d53a04bde57af601f86d0845 SHA-1: 2103388cda5e21890f0c57e381b97fc904464d67 SHA-256: 5fff5ae9612e8e40f47701295ca0905ee22f7b21467ab5697aee4cf83eca22b8
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a high number of external URIs, many of which point to potentially disposable domains. The 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic indicates a deliberate attempt to create a large number of links, suggesting a phishing or malware distribution campaign. The embedded JavaScript is likely used to facilitate the redirection or download of malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9978

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 http://rigassprotes.lv/uploadz/file/fopidiliretivomajamosaz.pdf In PDF document text
    • https://abogadosaccidentealicante.centralcms.cloud/galeria/files/68048153332.pdfIn PDF document text
    • http://massimosusto.eu/userfiles/files/98903940115.pdfIn PDF document text
    • http://recko.ru/ckfinder/userfiles/files/45485782078.pdfIn PDF document text
    • http://kibbkw.com/uploads/files/numasowukafolotibigav.pdfIn PDF document text
    • http://pincailight.com/zk/UploadFile/file/2021090304171473499.pdfIn PDF document text
    • http://mediasingrid.com/js/new/fckeditor/userfiles/file/14933805289.pdfIn PDF document text
    • https://euforbiabulgaria.com/uploads/pages/files/86793946819.pdfIn PDF document text
    • http://szermgrt.hu/uploads/ckfinder/userfiles/files/zudutinakitogadu.pdfIn PDF document text
    • https://maytinhdalat.vn/images/uploads/files/87855197585.pdfIn PDF document text
    • https://vcvscr.cz/www/www/fckphotos/file/54473028019.pdfIn PDF document text
    • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/07ef5d44b1980e93de18513c393af07f/22462118936.pdfIn PDF document text
    • https://fertilizerproductionprocess.com/d/files/vodolekiva.pdfIn PDF document text
    • http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/1613524501a437---53266194252.pdfIn PDF document text
    • http://xn--sanitrprofi-p8a.ch/fckeditor/editor/images/file/duvilofonodenerukifofe.pdfIn PDF document text
    • http://infrabud.eu/fckpliki/file/91298541174.pdfIn PDF document text
    • http://avanti.pl/userfiles/file/ralumogosaziduta.pdfIn PDF document text
    • http://servicepapik.ro/files/59813099374.pdfIn PDF document text
    • http://movitecnic.com/ressource/site-image/files/42964790511.pdfIn PDF document text
    • https://autoprofi.ua/userfiles/file/36706867652.pdfIn PDF document text
    • http://congluc.com/upload/files/15827379806.pdfIn PDF document text
    • http://dsagco.com/Upload/file/78476729239.pdfIn PDF document text
    • http://studioego.cz/userfiles/file/jiletobunevetasopijaduw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=miraculous+new+york+united+heroez+full+moviePDF 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_off0000ce1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE1A 18252 bytes
SHA-256: 89aff5738dd71822e40c0fcc3c76cc352f2ebbfa0579b9660cc367e900a41eb7
font_01_sfnt_off0000fd97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD97 11252 bytes
SHA-256: 704a33b23065c352a45bfcd66a4b2271ff48ed6bcf0ce19fc20012ff85bc4a16
font_02_sfnt_off000117f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x117F6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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