Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee46d11d19a401bc…

MALICIOUS

PDF

102.4 KB Created: 2021-09-07 12:06:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 6276c7cb98db7597dbf8b484f0b81837 SHA-1: fdf3bfa2cf33bfdbfb5a4ee0227190d6173887b7 SHA-256: ee46d11d19a401bcd49134237acb13e259dab19fcfe5f50067a2127a978dda30
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links pointing to compromised WordPress sites and other disposable hosting, suggesting a phishing or link-farming campaign. The embedded URLs likely lead to malicious websites designed to steal user credentials or deliver further malware.

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://medvor.ru/uplcv?utm_term=alphabet+arabe+traduit+en+fran%C3%A7ais+pdf PDF link annotation
    • http://tw-echen.com/uploads/files/202108260549547982.pdfIn PDF document text
    • https://diversified-nj.com/wp-content/plugins/super-forms/uploads/php/files/b8138085e2e72106b2b1f6285c436dab/tosase.pdfIn PDF document text
    • http://vrakskodamnetice.cz/file/jigelekezikemubelukibubi.pdfIn PDF document text
    • https://bettenbaehren.de/wp-content/plugins/formcraft/file-upload/server/content/files/16085576731496---wesixazawazasalogu.pdfIn PDF document text
    • http://ottotech.center/userfiles/file/tizefiniwibufexena.pdfIn PDF document text
    • http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f6b97d2e95---xinivejuludifelarimenonuf.pdfIn PDF document text
    • http://felixefontesadvogados.com.br/ckfinder/userfiles/files/jeruribowusaviselak.pdfIn PDF document text
    • http://birons.net/wp-content/plugins/super-forms/uploads/php/files/4b426fe264032a83a33571dba3787ab2/42291005783.pdfIn PDF document text
    • https://coluer.ir/documents/file/4729409111.pdfIn PDF document text
    • http://askort.pl/Upload/file/76575858657.pdfIn PDF document text
    • https://angkorphotographyguide.com/userfiles/file/senapiko.pdfIn PDF document text
    • http://www.stallionreadymix.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160706075d77f0---30824557921.pdfIn PDF document text
    • https://fullprotec.com/ckfinder/userfiles/files/tegirojidatasanitari.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/160cfdc422180e---wabobel.pdfIn PDF document text
    • http://inistor.com/ufiles/files/53329175395.pdfIn PDF document text
    • http://vina2002.com/uploads/files/moduxejez.pdfIn PDF document text
    • https://purebodycare.courses/wp-content/plugins/super-forms/uploads/php/files/deqsbqm0fhh0dp5872etho93l6/37345762778.pdfIn PDF document text
    • https://stiglic.sk/userfiles/file/84571545408.pdfIn PDF document text
    • https://ideylia.fr/uploads/file/56519216212.pdfIn PDF document text
    • https://www.mybizwebsites.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082b4bc5c30a---xitarixifujaxazaboxerojo.pdfIn PDF document text
    • https://responsible-tourism-alliance.com/content_file/files/kidapavanatujofopefufef.pdfIn PDF document text
    • http://benevolo.it/userfiles/files/jiwatuzigegenapopaxumex.pdfIn PDF document text
    • http://reneenicoleevents.com/clients/865995/File/29668065657.pdfIn PDF document text
    • http://kioskcondoweb.wpengine.com/wp-content/plugins/formcraft/file-upload/server/content/files/160761d28a8882---minubobow.pdfIn PDF document text
    • 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_off00011bb4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11BB4 10896 bytes
SHA-256: f5ee08038f0179c8bc733e68fad3712195f27b4d5e0fa2fd8e30bb23b5e73fd3
font_01_sfnt_off0001349f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1349F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00014cb1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14CB1 24116 bytes
SHA-256: e42a013ce204d26d7c7b4c8349bd2c0af709c08b195b7a9b65d0434f6476d937