Malicious PDF — malware analysis report

Static analysis result for SHA-256 1cc14d0e4b8c6a8c…

MALICIOUS

PDF

97.5 KB Created: 2021-06-29 19:12:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: ac94a134856512110a2cdc54b806270b SHA-1: 7724a06b01c35a877f2936bde7bf5a1692a1de5b SHA-256: 1cc14d0e4b8c6a8c6333a654255898abe1565651f0b2acb3d953c12632513b24
156 Risk Score

Malware Insights

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

This PDF file contains a large number of links, many of which point to compromised websites or disposable hosting, indicating a link farm designed for malicious redirection. The ClamAV detection and ML classifier strongly suggest malicious intent, likely related to phishing or malware distribution. The presence of multiple PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9820

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://c-amc.com/upload/files/jajejuz.pdf In PDF document text
    • https://adm.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/887db07d74d1c8933adf4c0f1ee9f5be/sasubikimubuvor.pdfIn PDF document text
    • https://12shio2.com/contents//files/nibagatimozise.pdfIn PDF document text
    • http://vattucongtrinh.com/userfiles/file/bofesedupilatoja.pdfIn PDF document text
    • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/r5t326h1pieb5gatq51sinboa6/soviliboju.pdfIn PDF document text
    • http://www.climatisur.com/ckfinder/userfiles/files/53857234631.pdfIn PDF document text
    • https://www.caesarstravel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160729ce7270da---madagekegatotate.pdfIn PDF document text
    • https://promocionesnma.com/wp-content/plugins/super-forms/uploads/php/files/5fa86354a93ce9b005f838b84426af59/39114776065.pdfIn PDF document text
    • http://www.advokat.com/app/webroot/img/fck/file/tebodipon.pdfIn PDF document text
    • https://cmsschoolkg.org/userfiles/file/luvafotunedi.pdfIn PDF document text
    • https://www.teppiche-waschen-hamburg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160af9c8aa2448---fajawovazugojilosogubo.pdfIn PDF document text
    • http://exactblue.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0ab59451dc---dogobizemukoximekiviluko.pdfIn PDF document text
    • https://vickers-electronics.co.uk/wp-content/plugins/super-forms/uploads/php/files/86f6674616b3235fcdc9d7ba898c0f3c/nekudinalawageg.pdfIn PDF document text
    • https://www.heracles-hotel.eu/wp-content/plugins/super-forms/uploads/php/files/0b1q0bisbdu0id7c5sj2ltrmbq/zapaputudilokumumabat.pdfIn PDF document text
    • https://alshamiltrading.com/alshamilfiles/file/zajisozader.pdfIn PDF document text
    • https://www.ideaklinikbursa.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608206dc4c5eb---valuvomeroxikepiperupiwo.pdfIn PDF document text
    • http://circuitoinsulargc.com/documentos/file/bexijubevibugateduwovoji.pdfIn PDF document text
    • http://coytex.net//ckfinder/userfiles/files/8063173517.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160bdd7c5bd9c4---97388702050.pdfIn PDF document text
    • https://ankaratemizlikcim.com/depo/sayfaresim/file/445038294.pdfIn PDF document text
    • http://prof-cosmetics.com/upload/files/151242119.pdfIn PDF document text
    • http://mispuntossaga.com/campannas/file/33696903997.pdfIn PDF document text
    • http://phenix-security.fr/wp-content/plugins/formcraft/file-upload/server/content/files/160917a6b7eb28---14287957359.pdfIn PDF document text
    • https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/7u2qag2762lc4jtq6fn57dkfmq/robifozirevelebulagerob.pdfIn PDF document text
    • http://nc2e.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16073d33de9056---60610337805.pdfIn PDF document text
    • http://www.olympussverige.se/wp-content/plugins/super-forms/uploads/php/files/c2dgnmqcoqa83iu96ra3d1t6qt/98856534417.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=fast+and+furious+8+yts+downloadPDF 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

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011988.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11988 17276 bytes
SHA-256: d3beea0effeebf8888217e22887fb3326614f6adc1cf157a8d9c14d4ce4b0fbd
font_01_sfnt_off000146e1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x146E1 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00015ef8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15EF8 10700 bytes
SHA-256: 9210a2644747e90090433783d436dfaa08e5ffd508dd737e588435000fa6c162

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