Malicious PDF — malware analysis report

Static analysis result for SHA-256 60e449994443a28b…

MALICIOUS

PDF

96.7 KB Created: 2021-08-01 05:14:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: bf14a8ebde6381fc211e937ce03eb98e SHA-1: b0e98e1fb1b33c58b2cade070d57001de447f163 SHA-256: 60e449994443a28b97feba3b133fdde0f496ea3e6a1b5f99e5e34dc9010f496f
156 Risk Score

Malware Insights

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

The PDF file contains a link farm pointing to numerous websites, many of which appear to be compromised CMS uploads. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or malware distribution. The presence of multiple external URIs and a link farm structure suggests an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9929

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 http://sshs61.com/clients/6/60/60e739d5a8cf4a6710e4f064fd99417d/File/kogataxodegolotemi.pdf In PDF document text
    • https://ivanamihic.com//files/47705246315.pdfIn PDF document text
    • https://cruiseship.cruises/wp-content/plugins/super-forms/uploads/php/files/vgg04f1k1scgevpjbl27qlmt37/64482053149.pdfIn PDF document text
    • http://chi-kara.net/userfiles/file/kibos.pdfIn PDF document text
    • https://shinyjewellers.com/wp-content/plugins/super-forms/uploads/php/files/q8qkueddslgfk0m6ghlvj67nbe/tutanipefodukexow.pdfIn PDF document text
    • https://panegovernance.com/ourprojects/chowki/UserFiles/file/wigudegobipadevo.pdfIn PDF document text
    • https://mvmdigital.gr/files/files/mulupefadigodivo.pdfIn PDF document text
    • http://salonlomi.pl/wp-content/plugins/formcraft/file-upload/server/content/files/16099eacabaa29---96374098609.pdfIn PDF document text
    • https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9294cb674f---bawuwogagu.pdfIn PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/eaf18466906a7bc66a998c4dc03b60c2/20820842774.pdfIn PDF document text
    • http://www.ausafrica.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16082554b9c8cc---benajebabajuwoze.pdfIn PDF document text
    • https://www.davidwoodpersonnel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bebe5a39f41---faluru.pdfIn PDF document text
    • https://shayangroup.net/wp-content/plugins/super-forms/uploads/php/files/f905e1caa06ffa08b259630d96fa6c68/regotude.pdfIn PDF document text
    • https://traveletrust.com/basefile/traveletrustcom/files/78246121355.pdfIn PDF document text
    • http://ampletrekking.com/userfiles/file/jubamosepevovenazolemip.pdfIn PDF document text
    • https://beytarimcilik.com/admin/editor_resim/file/ninetumalimuzatolazorines.pdfIn PDF document text
    • https://bucatariizidite.ro/printuri-fi/files/9399828955.pdfIn PDF document text
    • http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/160ac359a8d61e---fefokujebafifuduk.pdfIn PDF document text
    • https://www.citysecurity.org.uk/wp-content/plugins/super-forms/uploads/php/files/8justqlv045sekm8rkljo8s8gq/novokawolimasodatifugip.pdfIn PDF document text
    • https://www.adcgrain.com/wp-content/plugins/super-forms/uploads/php/files/b15fa22c2522fab89471df9f8839b32d/kejub.pdfIn PDF document text
    • http://zulassungsservice4you.de/bilder/file/jibopuj.pdfIn PDF document text
    • http://www.rebranded.tv/wp-content/plugins/formcraft/file-upload/server/content/files/1608afd1a25967---fexaxezitudilena.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606f64bd2a9ec---pamaxemi.pdfIn PDF document text
    • http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085b1c0315e0---kosevuxebigerofemobofipo.pdfIn PDF document text
    • http://chronocertif.com/userfiles/file/tejosezibe.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/Om9ozkHLxGw/uplcv?utm_term=fairmont+senior+high+school+wv+alumniPDF 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_off0001152c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1152C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00012d43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D43 10904 bytes
SHA-256: 72780c9f45a6b085fe5698b23fff71216be401105c1fbf1d883631de6d6184a6
font_02_sfnt_off00014661.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14661 17800 bytes
SHA-256: 6e69555f9a2487041b276800be288b5c692f2573561680691a563dfdeff5d1a7

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