Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd0cf16834ccc67c…

MALICIOUS

PDF

469.1 KB Created: 2021-06-29 06:50:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: a93b03630cff08e4dea64370db53f538 SHA-1: d03a78403384f4cfefb0bd3964948c410459c82a SHA-256: dd0cf16834ccc67cc723c326bfef9a7ebb786f1609ecc9c673275fd4cd5df652
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains numerous links, many pointing to compromised CMS upload storage, suggesting an attempt to host or distribute malicious content. The embedded URLs, such as 'https://synerhu.ru/uplcv?utm_term=getting+started+in+technical+analysis+by+jack+schwager', are likely part of a lure to trick users into downloading further malicious files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7612

Heuristics 5

  • 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
  • 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://synerhu.ru/uplcv?utm_term=getting+started+in+technical+analysis+by+jack+schwager PDF link annotation
    • http://www.sunaryem.com.tr/wp-content/plugins/super-forms/uploads/php/files/j3cki0iud761aod6rd96pqtpf0/62928440670.pdfIn PDF document text
    • http://chickendaylacrescenta.com/uploads/files/fixolepopaduvejiluw.pdfIn PDF document text
    • https://protradingindia.net/userfiles/file/ledajuduzamosuxaxuxaxewar.pdfIn PDF document text
    • http://www.linkkorea.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160b37d424b91c---87065665259.pdfIn PDF document text
    • http://feast.to/upd_file/79817764672.pdfIn PDF document text
    • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/j5dqcn3snln3rchqug7t8m8dsc/6283209408.pdfIn PDF document text
    • http://hitecds.com/userfiles/file/lixemurowidisi.pdfIn PDF document text
    • https://www.hinogas.com/wp-content/plugins/super-forms/uploads/php/files/d3qe7kpfa2jl8re06jk9nidgrh/73584161390.pdfIn PDF document text
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608fa36638e9d---nalaxiduziravi.pdfIn PDF document text
    • https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/62219f57fd306c3717a1c841c2a95a48/ranafaruf.pdfIn PDF document text
    • http://alarcon-v.com/editor_upload_image/file/66228257297.pdfIn PDF document text
    • http://sl-light.ru/design/img/upload/file/67986886500.pdfIn PDF document text
    • http://dmkaudit.sk/101/upload/file/41875340333.pdfIn PDF document text
    • http://shqinze.net/admin/upimg/file///62905816228.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/7fv0c42isclf89c7m524lhfpn3/tifen.pdfIn PDF document text
    • http://orchid-daikanyama.com/userfiles/file/71479807629.pdfIn PDF document text
    • https://lightupalife.org.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160bd85e279c50---22985692966.pdfIn PDF document text
    • https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/ce42122bb19f9a9bfa02f24eee88b78b/rafig.pdfIn PDF document text
    • https://www.bocamvigliesrooms.com/wp-content/plugins/super-forms/uploads/php/files/1be581473ba9ae6b98f416fa944d8f1d/gejuvojo.pdfIn PDF document text
    • https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160abcac2bf6f9---86655326731.pdfIn PDF document text
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/39d2e42784f1fa0de573ee14f724eda0/romojaxek.pdfIn PDF document text
    • https://southtours.com/wp-content/plugins/super-forms/uploads/php/files/am69vkrgvqihsb1lk860tbmn2v/78846119806.pdfIn PDF document text
    • http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608321ab95cb4---pupabini.pdfIn PDF document text
    • https://mandalaconfeccao.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609c8fcf9abcb---3170021967.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_off0006df9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DF9B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0006f7ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F7AD 19344 bytes
SHA-256: 454ce657191848290d3c92221cc4cef3cbe6ebc14fd754a97afcf9f971eeb4e0
font_02_sfnt_off00072a19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72A19 11132 bytes
SHA-256: dd54f2d283a9c8f082f3e6aba242ca18c428ac62cbbde3766990327ab9a3a136

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