Malicious PDF — malware analysis report

Static analysis result for SHA-256 f508ecc495a3b95f…

MALICIOUS

PDF

86.0 KB Created: 2021-09-11 19:46:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 66045324000f9c56b56af12bc6a3af2d SHA-1: 84ff46738df19dbc41cc838b64359c13b23325fe SHA-256: f508ecc495a3b95f73b615bc6b2ad6d3b2681a5704d2b8e85bbdd7df73228cfa
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs that form a link farm, a common technique for phishing or distributing malware. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were extracted, the presence of a link farm and the overall heuristic firings suggest the document is designed to lure users to external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://pixomot.ru/uplcv?utm_term=abcd+tamil+movie+prabhu+deva+full+movie+download PDF link annotation
    • http://labellebeaute.com.hk/ckfinder/userfiles/files/7713196303.pdfIn PDF document text
    • http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613696ea09cb4---difisijizibira.pdfIn PDF document text
    • http://shippingengineering.com/files/ckeditorothers/33608402163.pdfIn PDF document text
    • https://kligi.viart.lt/ckfinder/userfiles/files/gimivixemipe.pdfIn PDF document text
    • http://sukhonthip.com/file_media/file_image/file/disogolej.pdfIn PDF document text
    • http://winkeleninzundert.nl/uploadimages/files/xosevenubobotomatukuxim.pdfIn PDF document text
    • http://mingmitrcoffee.com/user_img/files/kixeso.pdfIn PDF document text
    • https://lorenzonimmigrationlaw.com/wp-content/plugins/formcraft/file-upload/server/content/files/16137a5f6ceb30---jilanavexefazi.pdfIn PDF document text
    • http://stelmart.ru/userfiles/file/zanunimapiwudirikazedezum.pdfIn PDF document text
    • http://mazraeir.com/images/upload/files/denosovevutofebimu.pdfIn PDF document text
    • http://ottomaniantextile.com/userfiles/file/91760400610.pdfIn PDF document text
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/161390b03ea967---22156803587.pdfIn PDF document text
    • http://toyotaquangninh.org/data/dulieu/files/30650246417.pdfIn PDF document text
    • http://condominiobrisasdelnorte.com/userfiles/file/78582746046.pdfIn PDF document text
    • https://quanticabtl.com/cms_2018_quantica/sgi_userfiles/userfiles/files/26514982497.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16139972ea38c4---34674963817.pdfIn PDF document text
    • http://aaaexpressac.com/userfiles/file/pujunaj.pdfIn PDF document text
    • https://www.gpaci.org.br/cms/ckfinder/userfiles/files/31998338240.pdfIn PDF document text
    • http://monarchiaerembolt.hu/tmp/48858439444.pdfIn PDF document text
    • https://www.traitagri-solutions-alternatives.fr/ckfinder/userfiles/files/ramipaxukogobiniropunuwo.pdfIn PDF document text
    • http://av72-reklama.ru/userfiles/file/163136867319548f01ca35bbaeeda7.pdfIn PDF document text
    • http://www.mustwalge.ee/data/content/files/81907365040.pdfIn PDF document text
    • http://www.1atlanticfunding.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b7d637d3b6---fisegirarodekaxofo.pdfIn PDF document text
    • http://enidental.com/userfiles/file/20210908093743.pdfIn PDF document text
    • http://saharun.org/uploads/ckfinder/userfiles/files/98649385411.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_off0000e016.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE016 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f828.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF828 20964 bytes
SHA-256: 55a087bae1baa5efcb7da44b9415548d2aef7337bb5bc68143242397bdf533bc
font_02_sfnt_off00013028.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13028 11088 bytes
SHA-256: 6cc1f2c151e654493f0770a4d9e22ac36254f004efdd5ae00025c22531a9fbe6

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