Malicious PDF — malware analysis report

Static analysis result for SHA-256 d54a47684eb01db8…

MALICIOUS

PDF

134.3 KB Created: 2021-06-29 20:35:52 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-15
MD5: a96b8a72543c8f1f3bf969514e3ffc85 SHA-1: 8be08cd4755b9e8cd96a7008e30472f715112a81 SHA-256: d54a47684eb01db85bc8c1062a80077859b3a1a74e7fb440b188cc91db991a76
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It functions as a link farm, presenting numerous URLs that point to various websites, many of which appear to be hosted on compromised CMS uploads or disposable domains. The primary goal seems to be directing users to external sites, potentially for phishing or to serve further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9957

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 http://emeraldoutback.com/clients/f/f6/f61299a274fa8fdb0c00f5b1ed511d42/File/35833338420.pdf In PDF document text
    • https://allmassage.net/upload/file/20210507061545.pdfIn PDF document text
    • http://asianaccounting.com/admin/fckeditor/userfiles/file/48555636388.pdfIn PDF document text
    • http://elenasteele.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5c375cbe70---dajetosomipemularelutarik.pdfIn PDF document text
    • http://snookerfootball.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160ac7afa2b0a0---84732356198.pdfIn PDF document text
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090f8b480ec8---pogasebadil.pdfIn PDF document text
    • https://gfow.om/wp-content/plugins/super-forms/uploads/php/files/j303ak47um3r2hsr9nl5lvuu85/72464702504.pdfIn PDF document text
    • http://am-assets.com/aom/magnolia/userfiles/file/8972625274.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/923b77497c3982ecd6955b118e6d1427/14211989464.pdfIn PDF document text
    • http://www.zopfitravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160815cd1e4383---58541742618.pdfIn PDF document text
    • https://watfordfairtrade.org/app/webroot/img/files/84667820974.pdfIn PDF document text
    • http://jyjwqj.com/uploadfile/file///2021060402024913.pdfIn PDF document text
    • https://laihouston.com/wp-content/plugins/super-forms/uploads/php/files/2e3e09f3b00dd4f1b21e5517afcdc1c3/kivon.pdfIn PDF document text
    • http://www.cenlajobinator.com/siteuploads/editorimg/file/5660440342.pdfIn PDF document text
    • http://protech.com.ng/wp-content/plugins/formcraft/file-upload/server/content/files/1608f9f2cb2da0---lulezekamararonemalag.pdfIn PDF document text
    • http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090c84b6d9cb---magepege.pdfIn PDF document text
    • https://www.emma-solutions.de/wp-content/plugins/formcraft/file-upload/server/content/files/160882091605b6---vujofapolodub.pdfIn PDF document text
    • http://www.timtransportes.com/home/wp-content/plugins/formcraft/file-upload/server/content/files/1608667f6c82b4---rewinibilafunezaluvuraf.pdfIn PDF document text
    • http://www.neslihanonur.com/wp-content/plugins/super-forms/uploads/php/files/c44b8d625a06661220d20bf78141789e/14367804320.pdfIn PDF document text
    • http://sts-logistika.ru/wp-content/plugins/super-forms/uploads/php/files/5c1507986eb23df04c695e7c46327740/39914286294.pdfIn PDF document text
    • http://deccanquest.com/konadnew/userfiles/file/fumoxakazew.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=jimmy+page+1966PDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001a740.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A740 20872 bytes
SHA-256: 17c8be77dcc04d05d280333c37cb458108e21bf058d0704abd5fc3a317c0fa55
font_01_sfnt_off0001db0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1DB0C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001f323.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1F323 10452 bytes
SHA-256: 0ffa71dc167b8eaad6a26e9520c285edd829275ae66d47a7e8d2f54e79a56949

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