Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0926612dd3cafd1…

MALICIOUS

PDF

77.5 KB Created: 2021-09-02 09:36:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 90021403b4cab50fad521921a72932f4 SHA-1: 2c1a634b0dadc8e694afa71c90978c885366ef75 SHA-256: b0926612dd3cafd16edbe06205e062bfe62a9837c439d855ada9cf8c9b921725
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains numerous embedded URLs, many of which point to compromised WordPress sites. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to phishing or malware-hosting sites. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' further supports that this document is designed to host a large number of links, potentially for SEO manipulation or to distribute malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9976

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://luxurytravel-show.com/wp-content/plugins/super-forms/uploads/php/files/db2a4db59b21db624a67f904c0925bed/93147151318.pdf In PDF document text
    • https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/425aa1f7298c93ca23f6efd2855abd3b/sedekesojovix.pdfIn PDF document text
    • https://mrmobilewebsite.agency/wp-content/plugins/super-forms/uploads/php/files/fc1bf1eb2988fa9f57dfd97ec747c2df/79316865890.pdfIn PDF document text
    • https://leicht-spb.ru/wp-content/plugins/super-forms/uploads/php/files/8adcc94b63707580fbe31bf9e953cf27/89106590551.pdfIn PDF document text
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/1608b73213085f---94636838391.pdfIn PDF document text
    • http://gimnazjum-krasiczyn.pl/img/userfiles/file/82479361454.pdfIn PDF document text
    • https://flvirginia.com/wp-content/plugins/super-forms/uploads/php/files/b18fd54de123128c17e03cd350c01354/36419023930.pdfIn PDF document text
    • https://artsketch.ru/wp-content/plugins/super-forms/uploads/php/files/f6cd4b84ee84dc8c51566fadfd3fd4e3/21265302849.pdfIn PDF document text
    • https://perfecthospitals.com/ckfinder/userfiles/files/32554136545.pdfIn PDF document text
    • http://muntepa.com/userfiles/files/24648936621.pdfIn PDF document text
    • http://www.oe.com.tw/ezadmin/ckfinder/userfiles/files/78832032079.pdfIn PDF document text
    • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/m294aus4dj7v30mtuio0v5a61p/popamofimewod.pdfIn PDF document text
    • http://mikailang.net/userfiles/file/20210508173001_1035959471.pdfIn PDF document text
    • https://www.cedicar.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085e7397293e---befubebom.pdfIn PDF document text
    • http://hakkabrothers.com/userfiles/file///begobinavogovesamipupapip.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/33006117986.pdfIn PDF document text
    • https://kenkochaya.com/user_data/ckfinder/files/gegonuwixuxoxapowobo.pdfIn PDF document text
    • https://themodernla.com/wp-content/plugins/super-forms/uploads/php/files/8ce3e85588d6a3cabbcf29a4b2cb0c7c/vugorabu.pdfIn PDF document text
    • https://thetitangroup.ca/wp-content/plugins/super-forms/uploads/php/files/b539f84ae374959143051f4db5067fe4/75448133469.pdfIn PDF document text
    • https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e88cf2a674---67155286206.pdfIn PDF document text
    • https://hantverksakuten.se/ckfinder/userfiles/files/tipolejitibuz.pdfIn PDF document text
    • http://grubstreet.ca/ckfinder/userfiles/files/jeragabosuledogagu.pdfIn PDF document text
    • http://aep-tc.com/cache/fck_files/file/41974098398.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=indian+geography+pdf+for+competitive+examsPDF 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_off0000c806.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC806 11252 bytes
SHA-256: e674fb69de8ae75147484bf164d8d155abc5eb079bad46488442fb6d07fa5b6d
font_01_sfnt_off0000e211.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE211 17940 bytes
SHA-256: 17b70c87c80a66c0e465bd439081b038dd3959c7fba771025d46592288b9c100
font_02_sfnt_off00011043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11043 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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