Malicious PDF — malware analysis report

Static analysis result for SHA-256 03d7478807304502…

MALICIOUS

PDF

95.2 KB Created: 2021-09-06 20:54:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: f56f55708dd707a1742cd0bf5cc589ee SHA-1: 91a4c11afb6549ff958e58d6687525d9729a30df SHA-256: 03d747880730450249cde4c160372c2c97bc50f2c1ee591c6252ecec315e34e9
156 Risk Score

Malware Insights

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

The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains numerous links, many pointing to compromised CMS uploads and disposable hosting, suggesting it's designed to lure users to malicious sites. No scripts were extracted, but the structure and URL patterns are consistent with phishing or malware distribution campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9965

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://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/5045a4c00a9a9697885da07e1fb4216f/29203249931.pdf
    • https://funkydrop.shop/wp-content/plugins/super-forms/uploads/php/files/8d7314a1eddc7f268500a164bb6789c3/wafobevituxinuxozowikezo.pdf
    • https://sacc-la-chaux-de-fonds.ch/fichiers/file/zepesagiwelepifibibuzep.pdf
    • http://wallacewilliamsfamilyreunion.net/clients/6/66/662ca4338cd1fa41fa93b88222973dc6/File/48147793053.pdf
    • https://cakenepal.com/userfiles/file/9522032383.pdf
    • https://bd-sokolovska.eu/userfiles/file/31151570487.pdf
    • http://iberia-ex.com/images/blog//file/98747649712.pdf
    • http://www.scmphotography.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1611ac50172f09---bobevopazexogiset.pdf
    • https://www.dishdivvy.com/wp-content/plugins/super-forms/uploads/php/files/e17588bcf2e7f5ad42ef34f98149c894/wogogotasovad.pdf
    • https://howardsteeves.com/wp-content/plugins/super-forms/uploads/php/files/879dd075dd13f017d9c44492ab8bff79/gojutifapenemanajeduvoxos.pdf
    • http://studiopassarotti.it/userfiles/files/xuxokopusubakil.pdf
    • https://martybermanassociates.com/wp-content/plugins/super-forms/uploads/php/files/765825fdede8e562d8fcf3856c0b593f/75131545460.pdf
    • http://piotrkowska77.pl/zdjeciafile/puxogutoxigitezufan.pdf
    • https://hophamthaibinh.com/upload/files/tovikub.pdf
    • http://2478.ru/admin/ckfinder/userfiles/files/2829285922.pdf
    • http://ues-rb.ru/themes/ues-rb.ru/files/biloxavona.pdf
    • http://iviltra.lt/images/files/kemufaviveduzifebofalape.pdf
    • https://wonkingchina.com/d/files/90049726525.pdf
    • http://abwcrainhwy.com/uploads/files/41606085821.pdf
    • http://studiotecnicoarduini.eu/userfiles/files/xoseze.pdf
    • https://sesconbs.org.br/ckfinder/userfiles/files/jujuligaxasitap.pdf
    • https://www.crossfitparamaribo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f818cb9e122---mimudofexigob.pdf
    • http://onfireinteriors.com/userfiles/sopabolubutawag.pdf
    • https://realwebguys.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082caafe52b5---gaminedeso.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/6naE_Nh8_CY/uplcv?utm_term=tohatsu+6hp+owners+manual
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010b4a.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x10B4A 16792 bytes
font_01_sfnt_off00012361.bin
8333a16c28ad8434b98093190b54a7057988bd3dbd2d64989c5928a8de8df609
pdf-font-stream PDF embedded font (sfnt) at offset 0x12361 10740 bytes
font_02_sfnt_off00013c06.bin
9bbd96f3a6921fdbac4fe43168a7bcf61a0f89a009a1746a57cf353778509969
pdf-font-stream PDF embedded font (sfnt) at offset 0x13C06 19592 bytes