Malicious PDF — malware analysis report

Static analysis result for SHA-256 97facb3b87be69ef…

MALICIOUS

PDF

102.6 KB Created: 2021-06-29 00:12:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: 8a0c4562be7bfb41d09492c2521c66c6 SHA-1: 2b780095729041667b78b268d3684c456b6bf058 SHA-256: 97facb3b87be69efbd157a311c78c59b8bb0a64e6c683e60c36a1177c9110e7c
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics as malicious, including a high-confidence ML classifier and ClamAV detection. It contains numerous embedded URLs that form a link farm, with many pointing to compromised WordPress installations or disposable hosting. The primary attack pattern appears to be directing users to malicious sites, likely for phishing or to download further malware. No scripts were extracted, but the presence of numerous external links suggests an attempt to leverage T1059.007 (JavaScript) or similar techniques indirectly.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9926

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://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/436fea8d65b33095d376c95d80536f67/33700118109.pdf
    • http://www.emporiocaritaspisa.it/wordpress/wp-content/plugins/formcraft/file-upload/server/content/files/160c71a8c17545---gixoturokusizas.pdf
    • http://yoron.net/up/files/mopugedutiwusefe.pdf
    • https://slavica.ru/wp-content/plugins/super-forms/uploads/php/files/0844067ea6a54cf440b32881045a3b91/tudawedodigulogov.pdf
    • https://aawyx.com/sites/default/imageuser/file/mejeruwobodusosanumewozu.pdf
    • https://lllk.ru/wp-content/plugins/super-forms/uploads/php/files/93f54f50c033d78dc5867d2f5c9b1054/nuxudi.pdf
    • https://sckprime.com/wp-content/plugins/super-forms/uploads/php/files/9212710392206666a6d95709fe715f75/49431496144.pdf
    • http://www.a-fairys-choice.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609dc1a143c84---2624760911.pdf
    • http://www.barankayalar.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/160b3d0aa4b56d---rowejakasekojawoj.pdf
    • http://hzbmsj.net/images/upload/File/61250912767.pdf
    • https://genesislighting.net/wp-content/plugins/super-forms/uploads/php/files/bab76d17f3b0da7cc7d0f14b6c4ed4a9/wolavateloxokisige.pdf
    • https://asiatravel.kg/wp-content/plugins/super-forms/uploads/php/files/c9931fc1ab9553196e16b7b5e63969a0/lijasoxela.pdf
    • https://elearning-chemistry.ro/userfiles/file/74128546125.pdf
    • http://alimentosldm.com/userfiles/file/53489153122.pdf
    • https://baxsporthorses.nl/userfiles/file/degiv.pdf
    • http://koszyczarek.pl/userfiles/file/lujakepufagaj.pdf
    • https://dsodrecital.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ba6d3c2801e---gunewixixifuxuluv.pdf
    • http://montaze.org/democms/userfiles/file/29628964141.pdf
    • http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/16080e6a0184c7---9459130079.pdf
    • https://www.popcaffe.it/wp-content/plugins/super-forms/uploads/php/files/957dc310e437f618b8bcda2857918aac/zedobonekavadewug.pdf
    • http://www.catalogodecineargentino.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093a3eb30301---wuvilowepipatategadisa.pdf
    • http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160a8bb28b5b47---xijute.pdf
    • https://youstore21.com/wp-content/plugins/super-forms/uploads/php/files/718f7857095824e1d3ec708b0a4a1696/93301967798.pdf
    • https://g3az.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607901f935f39---47014076875.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=follow+the+shadow+runner+eso
    • 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_off000130b2.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x130B2 16792 bytes
font_01_sfnt_off000148c4.bin
00dfb8b23b3deffcab43e5d17e922110828496212e221f109a82579ddc56bf1e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x148C4 17004 bytes
font_02_sfnt_off00017546.bin
007c04b39c8f1ccbd9c16d30302a3af0ecfc9973cefeebaca9bcdf96b0c72a33		 pdf-font-stream PDF embedded font (sfnt) at offset 0x17546 10416 bytes

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