Malicious PDF — malware analysis report

Static analysis result for SHA-256 00c6e02f36ac85dd…

MALICIOUS

PDF

86.7 KB Created: 2021-09-06 00:04:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 8a3ea15bf7e6eabd5a06fd9bc5955080 SHA-1: d05e5f01d20ea33d241b993a73a4282f2b886f68 SHA-256: 00c6e02f36ac85dd6ea9b2007aabea67a6963335ec38f93f095028a616e3860e
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was flagged by a machine learning classifier and ClamAV as malicious. It contains numerous links to external websites, many hosted on disposable domains or compromised CMS upload directories, suggesting a link farm or phishing lure. The presence of embedded URLs and the overall structure indicate an attempt to redirect users to malicious content, likely for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://10glazsikeyrosa.ru/file/pefokavexejij.pdf In PDF document text
    • http://futimisdev.com/userfiles/file/pokirel.pdfIn PDF document text
    • https://baodinhsolar.com/wp-content/plugins/super-forms/uploads/php/files/gh2bduttgmg585shk7tkrn4q86/51481735291.pdfIn PDF document text
    • https://www.escon.it/wp-content/plugins/super-forms/uploads/php/files/fe2b051f69fd82cc8933fc079841ee6a/98171436793.pdfIn PDF document text
    • http://austintownfitch1980.com/clients/879833/File/37672376771.pdfIn PDF document text
    • http://vudafrique.com/wp-content/plugins/super-forms/uploads/php/files/e90a21d3f4f658a6a5e49d1b2b8919ea/34566381557.pdfIn PDF document text
    • https://ohcsi.com/ckfinder/userfiles/files/68538157192.pdfIn PDF document text
    • http://preciz.com/uploads/wysiwyg/files/xinuwalopuxerutoxola.pdfIn PDF document text
    • https://dichvuketoanvn.org/uploads/files/goxafotugis.pdfIn PDF document text
    • http://3handseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608269f4d01d8---sowox.pdfIn PDF document text
    • https://www.tanyadantus.com/wp-content/plugins/super-forms/uploads/php/files/c3535f2de8b17d1f57492e70127ad45e/wizesozib.pdfIn PDF document text
    • http://mnwebdesign.dk/userfiles/file/87757429967.pdfIn PDF document text
    • https://monyetjoget.com/contents//files/dowisijinevuno.pdfIn PDF document text
    • https://inverpalmas.site/aym_image/files/nudoxojoreluzogileke.pdfIn PDF document text
    • https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/ddbc85e6ab8b218f857aaf8ea0276391/vebarekamusonifus.pdfIn PDF document text
    • http://polymer-optix.de/userfiles/file/56838625462.pdfIn PDF document text
    • http://guss-ex.de/uploads/fck/file/pomutikibeletanir.pdfIn PDF document text
    • http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/160a1efbf15ba7---84824459484.pdfIn PDF document text
    • https://www.swissfillon.com/wp-content/plugins/super-forms/uploads/php/files/cda8763cbc55a9ded3ba1e86b0900be3/zewitisaganas.pdfIn PDF document text
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1609432c743936---viperewudapumugabunexaz.pdfIn PDF document text
    • http://beepost.vn/upload/userfiles/files/lepafijozijelogaxi.pdfIn PDF document text
    • http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c399f7266cb---sumopejaz.pdfIn PDF document text
    • https://xn--psg-9lac.hu/files/files/fejivovipubad.pdfIn PDF document text
    • http://nakajima-ya.com/upload/save_image/files/72742018906.pdfIn PDF document text
    • https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/6004315736bcbbdda90325fb019214fa/weroxotawedibej.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=minor+chord+progression+chart+pdfPDF 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_off0000ebd2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBD2 10844 bytes
SHA-256: 3a9f1fd3474fe202618571510eda2ac7c44f54e6e0e64f54f12a7d056301d724
font_01_sfnt_off00010494.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10494 18432 bytes
SHA-256: bcf83adb7a2d80e3030259990a6e4f7ed11fa225e9114b354d8f1d9da52813de
font_02_sfnt_off000134d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x134D0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1