Malicious PDF — malware analysis report

Static analysis result for SHA-256 47e740a8537634b6…

MALICIOUS

PDF

70.0 KB Created: 2021-09-21 01:30:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: ef6fb9a59462966a32a05260d56f5da8 SHA-1: 99e55eff601471568d902fa08e91fe6c5e954010 SHA-256: 47e740a8537634b6ce9011589df2e9f9b1ae4d877b09b25b0a412313b65aca17
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous embedded URLs pointing to disposable domains, indicating a link farm designed to redirect users to potentially harmful content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' strongly suggests this malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9975

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
  • 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://infrive.ru/uplcv?utm_term=my+name+ringtone+online PDF link annotation
    • http://pro-customer.de/userfiles/file/81651730273.pdfIn PDF document text
    • https://marupyara.com/fotos/userfiles/file/xolofexaberaxozawuwujexo.pdfIn PDF document text
    • https://shen-su.eu/gfx/userfiles/files/punomakorivarefatukupifep.pdfIn PDF document text
    • https://sledovani2.gpshlidac.cz/www/userfiles/files/xovege.pdfIn PDF document text
    • http://xn--3e0b556bhrbowi6undva.com/ckupload/files/48711488629.pdfIn PDF document text
    • http://miskolciharsona.hu/pictures/file/77616415028.pdfIn PDF document text
    • http://samtle.net/ckupload/files/71906079445.pdfIn PDF document text
    • http://neoneofitou.com/ckfinder/userfiles/files/vavatariwomexojulon.pdfIn PDF document text
    • http://stin-verdon.fr/assets/Image/files/nitubebusaw.pdfIn PDF document text
    • https://ptogel2.com/contents/files/pepopulodelujowov.pdfIn PDF document text
    • http://tomekorea.com/userData/board/file/pusuguxafi.pdfIn PDF document text
    • http://gelateriacool.it/userfiles/files/buxitoxupi.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/b524925ffd10d228bda20b1d476405a4/69383983572.pdfIn PDF document text
    • https://vernadoc.com/wp-content/plugins/super-forms/uploads/php/files/fd92d116c3aa1659dd8952045990c737/tepatodo.pdfIn PDF document text
    • http://ibconsulting.it/userfiles/files/zudisiliz.pdfIn PDF document text
    • http://hanlacsclub.com/ckupload/files/17869635726.pdfIn PDF document text
    • https://ikincielinmak.com/upload/ckfinder/files/13559523986.pdfIn PDF document text
    • https://mytekas.com/UserFiles/file/18332553865.pdfIn PDF document text
    • http://tinhdauvietnam.vn/upload/files/21292103161.pdfIn PDF document text
    • http://sanyosushiglendora.com/uploads/files/98014515838.pdfIn PDF document text
    • https://ptogel1.com/contents/files/82229772596.pdfIn PDF document text
    • http://stressmanagement-karriere.de/userfiles/file/jiwudivupisonemowaduvusu.pdfIn PDF document text
    • https://bodzlomu.com/userfiles/file/30186633068.pdfIn PDF document text
    • http://ajk-opakowania.eu/upload/fck/file/29167238613.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_off0000b55c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB55C 10392 bytes
SHA-256: 313fae663fcec806bd2579023c36dee2477f7cfa8aaa6c82b1931bbaba6ff5cf
font_01_sfnt_off0000cccf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCCF 14856 bytes
SHA-256: d704c96ef55486309471621e406dfa4bd18cb74cb0b6dc1314094a46bae5d206
font_02_sfnt_off0000f232.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF232 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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