Malicious PDF — malware analysis report

Static analysis result for SHA-256 2628096d79cd97ef…

MALICIOUS

PDF

212.1 KB Created: 2021-06-27 21:55:51 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 67fb4fe2a401918f3ff2ba85b9604810 SHA-1: 20ce0a433677948d0fe3e5e2b6bbaee5f7afb064 SHA-256: 2628096d79cd97ef5955d83245b2ee7dacf9b4977e6a5d1d753f36ea84a3196e
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links pointing to compromised WordPress sites, specifically within form upload directories, indicating a phishing or malware distribution attempt. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment. While no scripts were explicitly extracted, the nature of the links suggests a potential for JavaScript execution or exploitation within the PDF structure to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3089

Heuristics 4

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/1608b412216f80---rokenenubifinalirivefu.pdf PDF link annotation
    • https://dangeloremodeling.com/nbloom/fckuploads/file/44852977575.pdfIn PDF document text
    • https://carlojans.com/cms/file/74667485060.pdfIn PDF document text
    • http://foire-fromages-et-vins.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c89afe8bb8a---88057146492.pdfIn PDF document text
    • http://www.findvoters.com/userfiles/file/kuwurap.pdfIn PDF document text
    • http://dangkyidol.com/wp-content/plugins/super-forms/uploads/php/files/2suk0lfoireft1rgmr66bqs39i/76645703142.pdfIn PDF document text
    • http://apexibd.com/uploads/fck_uploads/file/fagakusetotile.pdfIn PDF document text
    • https://watfordfairtrade.org/app/webroot/img/files/mefisepexob.pdfIn PDF document text
    • http://catgarner.com/clients/873270/File/dokizarisef.pdfIn PDF document text
    • http://haithuanphat.com/uploads/files/vefawetidokasele.pdfIn PDF document text
    • https://eseninternational.com/uploads/files/73599246070.pdfIn PDF document text
    • https://k9-warrior.com/wp-content/plugins/super-forms/uploads/php/files/5decg89tr2oki8vo3oiold6shc/94374092509.pdfIn PDF document text
    • http://thm-holding.ru/wp-content/plugins/super-forms/uploads/php/files/c04924cb18a2ba96363b6b3bd969dc7e/33545950171.pdfIn PDF document text
    • http://www.rolstoellift.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608288c0ac955---zimoluzetedobawimibufuvo.pdfIn PDF document text
    • https://rhythmcprandfirstaid.com/wp-content/plugins/super-forms/uploads/php/files/a8e4cd9f704f16dbc5f2e10aa2f05ee0/kajolilonugaforab.pdfIn PDF document text
    • https://daulte.ch/ckfinder/userfiles/files/vawowap.pdfIn PDF document text
    • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608338ef6a5a1---vuxuvojojefoxag.pdfIn PDF document text
    • https://spheresignal.com/app/webroot/userfiles/files/taripisesididiru.pdfIn PDF document text
    • http://ne-moloko.ee/wp-content/plugins/super-forms/uploads/php/files/26ed68f22f2de9df6314adeb96c7a703/ralukebisowutif.pdfIn PDF document text
    • http://asesoriagarpe.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc64fe11f6b---lejavomegisala.pdfIn PDF document text
    • https://balajitutorial.com/admin/userfiles/file/40134066325.pdfIn PDF document text
    • https://refour.dk/wp-content/plugins/super-forms/uploads/php/files/62b50125595aaa69d33b4cc0c35b8aab/91089311526.pdfIn PDF document text
    • http://www.brennholz-heinlein.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb290a2048---85364645599.pdfIn PDF document text
    • https://yziact.fr/wp-content/plugins/super-forms/uploads/php/files/muqe05jgcdamsf4pu2o1hc8tm2/rezuwiwadevujezefumin.pdfIn PDF document text
    • https://avis-medical.ma/wp-content/plugins/super-forms/uploads/php/files/6860f807775091123879b1857eebd192/94772029599.pdfIn 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
stream_005_off00031ebe.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31EBE 28483 bytes
SHA-256: c2a128b874c42fd5efa627b02dd53b5f7232f97f987a28cd2ef496c80fde67d3
font_00_sfnt_off0002afb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2AFB7 10472 bytes
SHA-256: e88a874c436f1dd990a3e7f7a3769166ca796c236955fc956e98339505150af2
font_01_sfnt_off0002c77c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C77C 42076 bytes
SHA-256: 300c432556ddac0aeddf8828982597406619627341150ff3729e733db2c3183a

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