Malicious PDF — malware analysis report

Static analysis result for SHA-256 471e045f8ec0005a…

MALICIOUS

PDF

85.2 KB Created: 2021-10-09 20:09:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: e417e7ab8ccc74987cda21bdde9095a8 SHA-1: dc5d615235076a3eb954e53e751747d46165b843 SHA-256: 471e045f8ec0005a27fad4e48336b705ff536c4790064a669cfd1a06d28a981a
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded links, many pointing to disposable hosting or compromised CMS upload directories, suggesting a link farm designed to distribute malicious content. The heuristic 'SE_INVOICE_LURE' indicates the document's content is likely a deceptive lure, such as a fake invoice, to trick users into clicking these links. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 7

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://ketchas.ru/uplcv?utm_term=credit+card+policy+and+procedures PDF link annotation
    • http://suvenirzp.com/uploads/files/98976871582.pdfIn PDF document text
    • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/161442b8f7a070---tegepopenagixiz.pdfIn PDF document text
    • https://bititechnika.com/uploads/file/39947132939.pdfIn PDF document text
    • http://thuephotocopytaihanoi.com/upload/files/99778006668.pdfIn PDF document text
    • http://mutitar.com/user_img/files/puxuzojobixunumogixub.pdfIn PDF document text
    • http://energyexcess.com/userfiles/file/feludozoneworuzuler.pdfIn PDF document text
    • https://nonbodepsg.com/uploads/files/solemumiv.pdfIn PDF document text
    • https://healthresearchinstitute.net/userfiles/file/33631812643.pdfIn PDF document text
    • http://studiocinti.eu/userfiles/files/xezivuruwubuneguxapup.pdfIn PDF document text
    • http://spl-designs.com/ckfinder/userfiles/files/lesozixigelibuzanexefaxu.pdfIn PDF document text
    • http://metabolit-plus.ru/files/file/59748666698.pdfIn PDF document text
    • https://iasvn.org/Images_upload/files/vulojutusikimajit.pdfIn PDF document text
    • http://utpcomp.ru/uploads/files/54629703186.pdfIn PDF document text
    • https://isitekmuhendislik.com/userfiles/file/75380197095.pdfIn PDF document text
    • https://gservicepz.com/wp-content/plugins/super-forms/uploads/php/files/fd5613b7014e795b4b906b324104fca3/11924670183.pdfIn PDF document text
    • http://vonschickenfremont.com/uploads/files/44152537546.pdfIn PDF document text
    • https://5of7edwardstreet.com/assets/media/files/dagaxunudobajokubev.pdfIn PDF document text
    • http://kerama.altrodesign.eu/ckfinder/userfiles/files/93995539339.pdfIn PDF document text
    • https://aquatrustfina.com/userfiles/file/metefomegixan.pdfIn PDF document text
    • http://actlogistic.vn/upload/editor/files/27237264105.pdfIn PDF document text
    • https://braintreeclinics.com/app/webroot/img/files/devibatitajuko.pdfIn PDF document text
    • http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/1614090fc6ec4b---limidasofe.pdfIn PDF document text
    • https://gameclub.by/uploads/files/dopevuti.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_off0000e678.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE678 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fe8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE8F 10752 bytes
SHA-256: ea4c99f21c16a7303a1a287884aa4b29b1db85915b1c34151da79277f5260af7
font_02_sfnt_off0001176d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1176D 18412 bytes
SHA-256: 9da3722ca8c8e9df944bef1356efef2be90317050522da2d7febcb512c523b8f

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