Malicious PDF — malware analysis report

Static analysis result for SHA-256 747dc9f2b03f027e…

MALICIOUS

PDF

74.2 KB Created: 2021-06-27 22:08:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 6d06eebc982b9e081c739b8ed68a5ac9 SHA-1: 6e47de6fd05175dbdff1f538c676218e47c43257 SHA-256: 747dc9f2b03f027e0ebd83c94746904ca2ccda92a1d93d0a7a964e4afe730a75
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URLs, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users. The presence of PDF-specific heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' reinforces the attack pattern of using the PDF as a lure to external, potentially malicious, sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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://garglob.ru/uplcv?utm_term=all+about+market+timing+pdf PDF link annotation
    • https://mut-zur-veraenderung-hambuch.de/userfiles/file/56584826781.pdfIn PDF document text
    • http://cursosadistanciayonline.com/medios//files/38055165810.pdfIn PDF document text
    • http://mouaumfb.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f226ad209e---gewesujotubenu.pdfIn PDF document text
    • https://goldengrowers.com/wp-content/plugins/super-forms/uploads/php/files/5b696895f415bd5a65ad0a12338aa77e/gikotemitetulixivelati.pdfIn PDF document text
    • http://metabolit-plus.ru/files/file/75008781843.pdfIn PDF document text
    • https://fibaquitaine.fr/cebatrama/userfiles/files/tozitodatex.pdfIn PDF document text
    • https://www.frontierexim.com/wp-content/plugins/super-forms/uploads/php/files/81kgg9sqkihtd6u2nmm67vc56u/dogazowe.pdfIn PDF document text
    • http://www.commandinglife.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f360802444---82282732758.pdfIn PDF document text
    • https://fallsplat.se/file/23080987935.pdfIn PDF document text
    • http://jmvlpslimited.com/ci/userfiles/files/15948487121.pdfIn PDF document text
    • http://www.victorian-manor.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160747639ddb2f---fosugo.pdfIn PDF document text
    • http://ngpsusa.com/wp-content/plugins/super-forms/uploads/php/files/d9r5hn82610jbqkqjjma69u40q/64234316900.pdfIn PDF document text
    • https://inchiriereelicoptere.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606fec3aaabf3---zuxusipapoziw.pdfIn PDF document text
    • http://www.majorisinvestimentos.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16092385b120a1---zakogifekumimemij.pdfIn PDF document text
    • http://anhuizpyy.com/upload_fck/file/2021-4-29/20210429232843400920.pdfIn PDF document text
    • https://lentes123.com/aym_image/files/75014792715.pdfIn PDF document text
    • http://alnoorcity.com/userfiles/file/tofulusojaxubemakusu.pdfIn PDF document text
    • https://hsegroup.ru/wp-content/plugins/super-forms/uploads/php/files/2n2q872l4153925p869e576kl4/38594917262.pdfIn PDF document text
    • https://nicemexico.net/wp-content/plugins/formcraft/file-upload/server/content/files/1608374d85ec76---12667589227.pdfIn PDF document text
    • http://kaufdeinauto.de/wp-content/plugins/formcraft/file-upload/server/content/files/160721985504e2---18733619198.pdfIn PDF document text
    • http://beautybybelief.com/admin/images/file/tametimexegovuko.pdfIn PDF document text
    • https://travels-ukraine.com/wp-content/plugins/formcraft/file-upload/server/content/files/16089a6d603dd6---jovitizijapexuwesukojulox.pdfIn PDF document text
    • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/9458b29850c7177e9ee4a558ee411cf6/46320273924.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_off0000c285.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC285 10984 bytes
SHA-256: eb6cc747a44c1e2cfc93a695844ae19ff994bee8598384f1a8ceab79adc85c74
font_01_sfnt_off0000db9b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDB9B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f3ad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3AD 15696 bytes
SHA-256: a8ac5668ea073df4251aa6104281b6544a4bbd380ed36ddd51014fc8ab1e14ac

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