Malicious PDF — malware analysis report

Static analysis result for SHA-256 475c096264ba1d7f…

MALICIOUS

PDF

114.8 KB Created: 2021-07-14 05:28:47 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 2d154e71bb824bb4083aa4e8df8f2877 SHA-1: 7c291835c8bf4f29e8881e65aeb8bd465417e5de SHA-256: 475c096264ba1d7ffc3b8fac371b734668d36675c0c84e5974a69afaecce3827
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to compromised WordPress sites, suggesting it's part of a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the structure and URL analysis point to a phishing or credential harvesting attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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://infrive.ru/uplcv?utm_term=cheer+emmy+nominations PDF link annotation
    • http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160902a267ab26---tewekibawejenagus.pdfIn PDF document text
    • http://munnarinfo.in/userfiles/file/61490873759.pdfIn PDF document text
    • https://selectwifi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6aeb36e150---31460169219.pdfIn PDF document text
    • https://suhrsmad.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160b42e3e260cd---71122476060.pdfIn PDF document text
    • http://hillcountryawningsandsunscreens.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607f3f13407e3---39363941441.pdfIn PDF document text
    • http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606e2339a21c4---lomezowumejawofokamixone.pdfIn PDF document text
    • http://pampa.be/uploads/userfiles/files/24343130835.pdfIn PDF document text
    • https://qualitylightsolutions.com/wp-content/plugins/super-forms/uploads/php/files/5a8d1a17f7bc15c6d2795d0fae96af5c/33564860126.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/3e591a3bc7ad5cbfbae51719d997ea49/linasukugesukadivarezu.pdfIn PDF document text
    • http://badaranquehablar.com/userfiles/files/befuliladewutovemoju.pdfIn PDF document text
    • https://kabelkyaobuv.sk/editor_uploads/files/wobop.pdfIn PDF document text
    • http://gilleyfamilyreunion.com/clients/6/6c/6ce887ac6ce8bbcacf46524318b1f362/File/30643780990.pdfIn PDF document text
    • http://bazis-expertiza.ru/ckfinder/core/connector/php/files/25316979553.pdfIn PDF document text
    • https://www.a2zmedical.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160b77e03567eb---jukanabagip.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/b42d4a07384305d51c548d0f6f7c51b5/dodavezuwazifisufajideno.pdfIn PDF document text
    • https://red-adlay.com/upload/files/gegisekefonajukakosil.pdfIn PDF document text
    • http://pulsrmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16071a46fe9873---16215972031.pdfIn PDF document text
    • https://www.accidentinjuryalbuquerque.com/wp-content/plugins/super-forms/uploads/php/files/9eqvqlfhd7olp8b17i5tl33oc6/zidilupubazexitifigux.pdfIn PDF document text
    • http://abwingsva.com/uploads/files/tajulivitidotomup.pdfIn PDF document text
    • http://bright-mineral.com/uploadfile/file/2021052223103670.pdfIn PDF document text
    • http://villa-carlshorst.de/sites/default/files/file/27203695206.pdfIn PDF document text
    • http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/1608823a970b8b---68739628559.pdfIn PDF document text
    • http://elisa5888.com/shopadmin/upload/files/mivuvadogomaxi.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_off00015d85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15D85 10472 bytes
SHA-256: 884504ac997c33df989b8d868a29181bd61cf237fe4e8179521f5fed85f72061
font_01_sfnt_off00017531.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x17531 18896 bytes
SHA-256: 4cd82244a32c3f65ef34125e4a65dd18d10c04c38975dac558cd86dc1d94f10f
font_02_sfnt_off0001a61b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1A61B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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