Malicious PDF — malware analysis report

Static analysis result for SHA-256 e14cab414f7e893c…

MALICIOUS

PDF

78.1 KB Created: 2021-08-28 06:09:56 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 226804a73aafde7eefe5031ae8fe06db SHA-1: 80b027e60bcc43e13843a7e473c612e93fa21345 SHA-256: e14cab414f7e893cef6ae37f793af6f015e2e650d231500d7cc2a26aed0c86c9
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 and a machine learning classifier as malicious, with ClamAV detecting it as a phishing trojan. It functions as a link farm, containing numerous URLs that point to various domains, some of which appear to be compromised CMS uploads or hosted on disposable infrastructure. The primary purpose seems to be directing users to external, potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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://alshamiltrading.com/alshamilfiles/file/zalipaviliwatugiwen.pdf In PDF document text
    • http://studiobardinisrl.com/userfiles/files/kefisu.pdfIn PDF document text
    • http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/160882b9cd821c---somogazunileg.pdfIn PDF document text
    • https://pensionatiitalianiinportogallo.it/wp-content/plugins/super-forms/uploads/php/files/435476a3382a4613410f09e59a029ab5/72873603212.pdfIn PDF document text
    • http://springswellness.net/wp-content/plugins/formcraft/file-upload/server/content/files/1607f56e88a1f5---64325894770.pdfIn PDF document text
    • http://nicenpos.com/userData/board/file/78203999363.pdfIn PDF document text
    • https://loctra.net/userfiles/file/masemukijogexiganotigezuv.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/prcl06bo7nfh8hqtq47kr035h5/75164566780.pdfIn PDF document text
    • https://tdfstore.it/file/69856833553.pdfIn PDF document text
    • http://elm3rad.com/file/bumixojuveseguleve.pdfIn PDF document text
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d41754e66c0---pixeziputakev.pdfIn PDF document text
    • https://agribusiness.pk/wp-content/plugins/formcraft/file-upload/server/content/files/16102a8d7c4c67---78557154920.pdfIn PDF document text
    • http://preiss.at/upload_files/files/naxubepiteporavujira.pdfIn PDF document text
    • https://giustofiori.it/file/zabetegoxuxevukidipe.pdfIn PDF document text
    • https://postele-z-masivu.sk/ckfinder/userfiles/files/54049095641.pdfIn PDF document text
    • http://weilandensemble.nl/ckfinder/userfiles/files/60575511765.pdfIn PDF document text
    • https://pnp-studio.com/fckeditorfiles/file/dokiwoliz.pdfIn PDF document text
    • https://bloomeng.com/uploads/wenogezipuju.pdfIn PDF document text
    • https://alhurwallpaper.com/Files/files/19448887941.pdfIn PDF document text
    • http://feach.ie/images/uploads/file/rukamuwo.pdfIn PDF document text
    • https://www.darrellstuckey.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609b7eceb5e62---boxajojus.pdfIn PDF document text
    • http://deurwater.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cb8c2e689c---6686854944.pdfIn PDF document text
    • https://rjiminfra.com/wp-content/plugins/super-forms/uploads/php/files/73a8c2dd0a9e2ffacc4d68c403a9ab41/3501325081.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/ngfLrbzwjls/uplcv?utm_term=ought+sentence+in+englishPDF 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

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c97c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC97C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e193.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE193 10252 bytes
SHA-256: b0e8c76d76174acbc4f045879e714c12b2441cee0a287968eebf73294578e5fa
font_02_sfnt_off0000f89a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF89A 19488 bytes
SHA-256: 6816a709f17320e4b19e981e1d2d405b1182658e292171b32aff1873b58d22b8

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