Malicious PDF — malware analysis report

Static analysis result for SHA-256 14cc2eaca612d9f6…

MALICIOUS

PDF

73.8 KB Created: 2021-09-19 10:12:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 707fdd4828a72b92930a52f41fea9a7f SHA-1: 5226dc400201688217b1ac158625d30c18312cba SHA-256: 14cc2eaca612d9f605a8fbf05b7f03c6946dca46dfb8ef660c1ed1695908f4c0
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which point to potentially malicious or disposable domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The presence of embedded JavaScript suggests an attempt to execute code within the user's browser or PDF reader.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9908

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://www.kickcommerce.com/userfiles/file/nifisuzimufoxujatexomeves.pdf In PDF document text
    • http://seoulsquare.com/userfiles/file/22336616684.pdfIn PDF document text
    • https://www.acta-mobilier.fr/ckfinder/userfiles/files/35336670637.pdfIn PDF document text
    • http://aksaaydinlatma.com/img/editor/image/file/bilenixe.pdfIn PDF document text
    • http://change4best.ru/upload/file/gafelul.pdfIn PDF document text
    • http://geologocarmignani.com/userfiles/files/17584670543.pdfIn PDF document text
    • https://mollis.rs/files/43352521212.pdfIn PDF document text
    • https://zapcdn.space/web/img/podborky/files/56715285955.pdfIn PDF document text
    • http://mrs-edu.com/sribati/editor/uploadfiles/wafazu.pdfIn PDF document text
    • http://chono.mn/uploads/userfiles/files/82613576651.pdfIn PDF document text
    • http://artstudiodesign.it/userfiles/files/tiwisuxixumugusujoxez.pdfIn PDF document text
    • http://gospelpour100voix.com/fichiers/newsletter/file/59054395729.pdfIn PDF document text
    • https://rugsinc.in/UserFiles/files/1212096440.pdfIn PDF document text
    • http://bibikid.ru/upload/tuxegiwuri.pdfIn PDF document text
    • http://daydreamspin.com/userfiles/file/moxozatajazuzedap.pdfIn PDF document text
    • http://www.gesas.it/media/mailinglist/file/4763712659.pdfIn PDF document text
    • https://consultingexpert.eu/fckeditor/userfiles/file/rixukeromijegetamumez.pdfIn PDF document text
    • https://vieclamday.com/userfiles/file/tezudovemek.pdfIn PDF document text
    • https://aramlasmerok.hu/uploads/file/30175989198.pdfIn PDF document text
    • http://quiltingacademy.com/fckeditor/userfiles/file/xinosipufaxidibejidizawe.pdfIn PDF document text
    • http://cartopack.com/Images/file/12483874547.pdfIn PDF document text
    • https://commonwealthsportsawards.com/userfiles/file/19189992651.pdfIn PDF document text
    • https://xrtradingfeedback.com/cmsimages/file/29908313712.pdfIn PDF document text
    • http://shortguycentral.com/ck_uploads/files/mafupome.pdfIn PDF document text
    • http://carshopm.com/js/upload/files/48762949892.pdfIn PDF document text
    • https://gcr.goldcrownresort.com/magazine_files/files/mezefevuxezogozaruva.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=gta+5+money+cheat+ps4+phone+numberPDF 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_off0000bfe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFE3 11104 bytes
SHA-256: d0d0cec565404b4073fcefa3b90ed2bf2743845d2e57054f3a841c5b4227fa52
font_01_sfnt_off0000d985.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD985 15488 bytes
SHA-256: 887d545e4f0f5494a52a4f9de65a598d7888f72e05bc935597b689e2e6b42033
font_02_sfnt_off000100f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100F8 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1