Malicious PDF — malware analysis report

Static analysis result for SHA-256 3df17e3bb5c3b59f…

MALICIOUS

PDF

92.5 KB Created: 2021-09-02 21:10:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: f667b7acf1afead27c149b4ee03661aa SHA-1: ea79a145c19712e84da33389c60cf8933d1782d4 SHA-256: 3df17e3bb5c3b59f59bb42c7feaa5f35c0546407e331f329d8959a8e36011143
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to compromised websites, many of which host other PDF files, suggesting a link farm designed for phishing or malware distribution. The presence of a 'turkish airlines e-ticket' UTM parameter in one URL indicates a potential lure for phishing. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or delivering a secondary payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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.
  • 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://medvor.ru/uplcv?utm_term=turkish+airlines+e+ticket+pdf PDF link annotation
    • http://web68s.com/upload/files/sewefubojasuroxov.pdfIn PDF document text
    • https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b0c4a9d90c7---biroxujunuxakafapujuboso.pdfIn PDF document text
    • https://sitebyside.ru/wp-content/plugins/super-forms/uploads/php/files/f59539be81332c331f139223fc256c5c/97783001663.pdfIn PDF document text
    • https://fortlauderdale-carservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/161005223430c9---28660182512.pdfIn PDF document text
    • https://yourtuscanyguide.com/wp-content/plugins/super-forms/uploads/php/files/64q0flfc4n6jgum6fjoiclk5k0/37410432449.pdfIn PDF document text
    • http://call.ae/wp-content/plugins/formcraft/file-upload/server/content/files/16087bc975796b---53380523018.pdfIn PDF document text
    • https://sitebyside.ru/wp-content/plugins/super-forms/uploads/php/files/0490b60705d2abd8120a3609e753b12b/98559846227.pdfIn PDF document text
    • https://masukpt2.com/contents/files/17587968797.pdfIn PDF document text
    • https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608113b85c9b6---35121351079.pdfIn PDF document text
    • https://ecobox.eng.br/wp-content/plugins/super-forms/uploads/php/files/qa8lu3ru6248hlj9udhcjjdm9f/63654113731.pdfIn PDF document text
    • http://pavcargo.ru/wp-content/plugins/super-forms/uploads/php/files/08c7ff63a233afdb092d51af0024111e/witalegenepamubux.pdfIn PDF document text
    • http://crmloccitanecr.com/campannas/file/borifodil.pdfIn PDF document text
    • https://interior-mark.com/ckfinder/userfiles/files/57594548418.pdfIn PDF document text
    • https://www.grecosalesinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a584c50a271---movubuxiveb.pdfIn PDF document text
    • https://marosme.ro/hirek/file/donowiponupolajuzizi.pdfIn PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b2174ee3bc6---57335276374.pdfIn PDF document text
    • https://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/f9652a7ef7228f3518f79d81ce6e6eed/14576521466.pdfIn PDF document text
    • https://lamaisonducoeur.ca/upload/editor/file/55604285468.pdfIn PDF document text
    • http://okeefesreef.com/ckfinder/userfiles/files/75418723866.pdfIn PDF document text
    • http://jonkmp.nl/img/cms/file/37755484452.pdfIn PDF document text
    • https://voolabs.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b5e9b2396cf---53301647857.pdfIn PDF document text
    • http://studiobaliva.eu/userfiles/files/84257588964.pdfIn PDF document text
    • http://s292376414.onlinehome.fr/datas/imgmail/file/2778809601.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_off0000fd5f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD5F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011576.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11576 10752 bytes
SHA-256: 0d5da89ae13e5832688165954667c987638c40f5714d07d6478576775eac39ef
font_02_sfnt_off00012e1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E1E 21204 bytes
SHA-256: 32965c107b016ef45698fbe8888daa883f0336d47426968b343a912eb6603dd9

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