Malicious PDF — malware analysis report

Static analysis result for SHA-256 02b05f920a9cff91…

MALICIOUS

PDF

102.7 KB Created: 2021-06-26 02:47:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: b7798901f24e35b92bb1f03c2725c636 SHA-1: cd8b2165f4617c1d029a42eda602dd5abeed6c05 SHA-256: 02b05f920a9cff91b4e81c898740bffd681d217cee666119fcf63b9500008b12
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many of which are hosted on compromised WordPress installations. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with a malicious document designed to trick users into downloading harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9773

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://veglifekc.org/wp-content/plugins/super-forms/uploads/php/files//97471879410.pdf
    • https://www.onestopnaturalstore.ca/wp-content/plugins/super-forms/uploads/php/files/j54dkec01vbbl5a6msniek6kfu/63821449345.pdf
    • http://iwish-cosmetics.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090dbd00f6e5---13669849891.pdf
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608857fc44c5e---jijukajigitaw.pdf
    • https://mumegram.com/userfiles/file/41774335731.pdf
    • http://grupomarsamo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a957130088---fezunamisasa.pdf
    • http://www.bridalchapel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160affc5c1c535---68877535564.pdf
    • https://gdr.co.il/wp-content/plugins/super-forms/uploads/php/files/45cb7687ea6924a6e5bad71ca8bdc75a/bimigibutevosolatokusepit.pdf
    • https://gionggiacam.com/ckfinder/userfiles/files/30674304281.pdf
    • http://www.wallisandemmanuel.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096bc589870d---42276265265.pdf
    • http://cosmic-kino.ru/sadm_files/poxodutetuw.pdf
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/160aa3c77aad47---76845084160.pdf
    • http://test.uebersetzungen-nesselberger.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609d2df69d857---2898864026.pdf
    • http://ehomeforeclosure.org/images/file/pisojesoverisuvawaj.pdf
    • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/ejf53f2ihlrjcvpmdr58luogqo/38010748345.pdf
    • https://arizonalightingsales.com/wp-content/plugins/super-forms/uploads/php/files/aa6eebd4efd20bc4d94b6534d0a79928/25189652122.pdf
    • https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b88cffd6633---tasibinulizagobareg.pdf
    • http://cricalliance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16076044608b9f---babezotudu.pdf
    • http://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c5a28e81b39---roxabex.pdf
    • http://otoozevran.com/resimler/files/82845493875.pdf
    • https://www.limratechnologies.net/wp-content/plugins/formcraft/file-upload/server/content/files/160c691dfc5180---gogipovisezux.pdf
    • https://cengilli.com/icerik_images/file/3800246938.pdf
    • https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/c8e37f4874ebacadfa5f0d64e8101c99/lawemaladikigibaf.pdf
    • https://popcouncilinstitute.org/wp-content/plugins/super-forms/uploads/php/files/9c6b926d87a59012879a23c9c2239d2a/bidagelapuporisen.pdf
    • https://pluviaterra.mx/wp-content/plugins/super-forms/uploads/php/files/dd89f82d567baab47a6b461de4b02026/nazibixunar.pdf
    • https://www.helpforbusymums.com/wp-content/plugins/super-forms/uploads/php/files/e2326605a80d94aa7072f45aebf14461/zewolofizunivolesawal.pdf
    • https://nuevocoach.co.uk/wp-content/plugins/super-forms/uploads/php/files/7305c41f1b3339ce06c1d2d11248e5c4/pariwobadiwusuwebidege.pdf
    • https://feedproxy.google.com/~r/Uplcv/~3/GLLx1DTH0VQ/uplcv?utm_term=the+enlightenment+was+characterized+by
    • 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_off00013055.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13055 16792 bytes
font_01_sfnt_off0001486c.bin
8535aadc5ea75ee7094ee413a159e7f37d75d45cfdabbe06ee7c5d75a6d87b9a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1486C 11060 bytes
font_02_sfnt_off000161d8.bin
95a246bff614d0171d3208881a901ba788253f8742a56e688e972d6354398979		 pdf-font-stream PDF embedded font (sfnt) at offset 0x161D8 16804 bytes

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