Malicious PDF — malware analysis report

Static analysis result for SHA-256 59bb17c140e50e7b…

MALICIOUS

PDF

84.3 KB Created: 2021-07-06 21:23:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 62f571f8ac3249d19f340cf16e2ad7c8 SHA-1: 93656a0cd339974fd4772443a11d27cde0ecedc4 SHA-256: 59bb17c140e50e7b75e96731ab97d944dc6bee07a3313caadf06e2fbcabdbdf7
156 Risk Score

Malware Insights

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

The file was detected by ClamAV as Pdf.Phishing.Trojan and flagged by an ML classifier, indicating malicious intent. It contains numerous external URLs, many hosted on compromised WordPress sites or disposable domains, suggesting a link farm designed to redirect users to malicious content. The PDF's structure and the presence of multiple external links strongly suggest it's used as a lure for phishing or to distribute further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://drafthe.ru/uplcv?utm_term=fields+of+gold+chords PDF link annotation
    • http://www.chatanakonci.cz/userfiles/file/mapasetudekug.pdfIn PDF document text
    • https://alutat.com/data/file/4616017193.pdfIn PDF document text
    • https://janeunchained.com/wp-content/plugins/super-forms/uploads/php/files/kl39c730qr0thns5cg5dqelcg6/40812432913.pdfIn PDF document text
    • http://global-poseg.com/wp-content/plugins/formcraft/file-upload/server/content/files/160911c15ede73---nuropefufupipojigujaba.pdfIn PDF document text
    • https://eletvital.hu/uploads/files/41002823243.pdfIn PDF document text
    • https://robertmatzuzi-massagetherapist.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16097a28aa090e---winajemiluvirim.pdfIn PDF document text
    • http://kelvista.lt/images/files/moduvasesupugexu.pdfIn PDF document text
    • https://mrmobilewebsite.agency/wp-content/plugins/super-forms/uploads/php/files/a3d189fa0195d625a783755d2648adbb/7032154022.pdfIn PDF document text
    • http://tavernadelsnoguers.com/wp-content/plugins/super-forms/uploads/php/files/73a117b559588170a3b897da8bd72b2f/71753901923.pdfIn PDF document text
    • https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/0ab18af05ba8bbb8decee88d996bdc3b/sanelikekatofixo.pdfIn PDF document text
    • https://www.hungryalex.com/wp-content/plugins/super-forms/uploads/php/files/tl550hk2d68j94fgb6ag7jf4h3/72308894569.pdfIn PDF document text
    • http://in-dapt.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a1f19a3e01d---vafewametulanuvinolagimat.pdfIn PDF document text
    • https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/6ffsnh0ej7np0f8c15i25luv6a/zabixifarukodokuxamido.pdfIn PDF document text
    • http://sparkpro.lv/content/file/gijugumufi.pdfIn PDF document text
    • https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/77ce0c47113d54963d966c1cbbe80a6b/lewuvovetesasazida.pdfIn PDF document text
    • http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/d401403f0b8a90df3a83e651c4e88a23/10110267839.pdfIn PDF document text
    • https://admonks.ru/wp-content/plugins/super-forms/uploads/php/files/c7688608212dd7a9b2ea7cfa5f7834bc/85732182038.pdfIn PDF document text
    • http://www.sunargrup.com.tr/wp-content/plugins/super-forms/uploads/php/files/071henbjvg22cenl2d3q6ueur4/kivexusitufejanubenutose.pdfIn PDF document text
    • http://jogforbigt.com/clients/6/61/61f7a61d17da296148a50ccd59c4a139/File/mowewebevifiw.pdfIn PDF document text
    • http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/16073b8021b9c6---14882966355.pdfIn PDF document text
    • http://andreevmag.com/wp-content/plugins/super-forms/uploads/php/files/e12a987a14e772d19f5c7b292115cd34/87982950371.pdfIn PDF document text
    • https://markzone.az/wp-content/plugins/super-forms/uploads/php/files/15culiigme2n4h68seamcbp4o3/54404514281.pdfIn PDF document text
    • https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/2c3e2d1e6e25e6d3b43aac8abce6eeba/dipunavemiverufenitidinox.pdfIn PDF document text
    • http://www.siscard.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bd1496b8383---51471927971.pdfIn PDF document text
    • https://transport-vehicules.fr/userfiles/file/zafumobubenib.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_off0000e55d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE55D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fd74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD74 10368 bytes
SHA-256: 514aa4abb277266f4218000912523568016aafd8a048d0b5e40dae942bd104e7
font_02_sfnt_off000114b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114B3 17784 bytes
SHA-256: 4fbda82074d27113ac51b065a01a37fa5fe110efd829eb2af23cb0a27895f212

Open this report in the interactive analyzer, or submit your own file for analysis.