Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea274719d2f22f57…

MALICIOUS

PDF

92.2 KB Created: 2021-06-30 07:15:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 3e725b6d372f70ce6b406fefe768c7a6 SHA-1: 862eed80d97c0c29e3c5b027a20cf1edec7a6e09 SHA-256: ea274719d2f22f579d2428713684337579855897dc40aef4636fd1789da71f6a
156 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics as malicious, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The document functions as a link farm, containing numerous URLs pointing to compromised websites and disposable hosting, likely intended to lure users into phishing scams or malware downloads. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9942

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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=martin+luther+king+jr+letter+from+birmingham+jail+pdf PDF link annotation
    • https://alrashed-alsaleh.com/userfiles/files/kejuvajizobudodozakodip.pdfIn PDF document text
    • http://newdimension.su/userfiles/file/kozilopok.pdfIn PDF document text
    • https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/340b2f1a5d1c94a9d72e8f5f50521379/zulipeburudujo.pdfIn PDF document text
    • http://yishiweb.com/upfiles/files/20210608_114817.pdfIn PDF document text
    • https://alismobile.co.uk/wp-content/plugins/super-forms/uploads/php/files/0dc54c07c9b3c22780704711c4b33808/rotizabi.pdfIn PDF document text
    • http://sad-azov.ru/wp-content/plugins/super-forms/uploads/php/files/9b53187fd76babf0aeb6b00a6e1dee7c/63763490613.pdfIn PDF document text
    • http://terapeutickemasaze.eu/wp-content/plugins/formcraft/file-upload/server/content/files/1607bf3905e5ff---48137579830.pdfIn PDF document text
    • http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607fce8a1bae5---ligaluruzumagupimidegif.pdfIn PDF document text
    • https://chocoinmobiliario.com/wp-content/plugins/super-forms/uploads/php/files/a752b3452206a5e8024ae3e5749a2727/57955866790.pdfIn PDF document text
    • https://dentinale.eu/wp-content/plugins/super-forms/uploads/php/files/12b4a07dbc8439c59e63a9fc8a3ba158/mojanipawuwerazejudol.pdfIn PDF document text
    • http://seoulsquare.com/userfiles/file/24760995784.pdfIn PDF document text
    • http://china-zub.ru/userfiles/file/90699278665.pdfIn PDF document text
    • http://alternativefitness.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608a3ca9bb427---25073247269.pdfIn PDF document text
    • https://www.rydalmereprestige.com.au/wp-content/plugins/super-forms/uploads/php/files/1bslqcs348dso57395m0ep509p/61841958311.pdfIn PDF document text
    • http://itaindustrial.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1608566a3d6e9a---28426269258.pdfIn PDF document text
    • http://broadviewlibrary.org/uploaded_bvlib/file/zudasewizukusuno.pdfIn PDF document text
    • https://thekolkatapackersmovers.com/ckfinder/userfiles/files/bafemikekolerozofupobapok.pdfIn PDF document text
    • https://massagetheory.ca/wp-content/plugins/super-forms/uploads/php/files/b3011f8349859fa295540506cd1c776e/dumowizilaper.pdfIn PDF document text
    • https://erinmillssmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/88astcvjp5ubjjndtoqm3k05a1/27247344918.pdfIn PDF document text
    • https://kimtuong.vn/isc/public/files/fckupload/file/56749008136.pdfIn PDF document text
    • https://bestmiamiturf.com/wp-content/plugins/super-forms/uploads/php/files/3049df22f2b072a89b1efc7ee67802a0/mutesojo.pdfIn PDF document text
    • http://assushop.com/userfiles/assushop.com/file/jiduxerufe.pdfIn PDF document text
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607149b335960---tuvumepekaponugutelenos.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_off0001054c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1054C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011d5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D5E 16960 bytes
SHA-256: 2083d4b648772e6a5676c41deb814f87d4a647fb9985bca7a85e35e8103952f0
font_02_sfnt_off000149b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x149B6 11232 bytes
SHA-256: 96bd41f4bfa737837e48eaf17937883c6b856d28b8a43d820b3ab8ca6580a196

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