Malicious PDF — malware analysis report

Static analysis result for SHA-256 2e17425e936c7024…

MALICIOUS

PDF

84.2 KB Created: 2021-06-27 18:29:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-14
MD5: 624ef4af6de35876277eb53ef553364b SHA-1: 9767bca950bcc0ee3dbe7817c71a9dfa3eeda372 SHA-256: 2e17425e936c70241063898f9a8aaa3ae5ae55b2d85d05d32398d250ffbe3f11
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF file was flagged as malicious by ClamAV and an ML classifier. It contains a large number of links, many pointing to compromised WordPress upload directories and disposable hosting, suggesting it functions as a link farm. The presence of 'utm_term=free fifa 19 coins generator' in one URL indicates a potential lure for users seeking free in-game currency, which is a common phishing tactic.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9964

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 http://lapenya.cat/imgjovesnaves/file/71564195790.pdf In PDF document text
    • http://www.huntsvillepr.com/files/files/wezivurusabom.pdfIn PDF document text
    • http://domholidays.com/userfiles/file/narezuxutexeboz.pdfIn PDF document text
    • https://www.dentaltaxpros.com/wp-content/plugins/super-forms/uploads/php/files/53dce666ec37ae438aeda59dc1068d67/tutapaf.pdfIn PDF document text
    • http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608f45463b77e---35693100110.pdfIn PDF document text
    • http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/16081d8053c3af---faxebezoru.pdfIn PDF document text
    • http://www.peopleoftheheath.com/wp-content/plugins/formcraft/file-upload/server/content/files/160baed47434f4---fidixadelidiluzezavi.pdfIn PDF document text
    • https://acornschoolcharleston.org/wp-content/plugins/super-forms/uploads/php/files/bb8f463bc1642d95b4a334fc94d0fe12/kakonigemu.pdfIn PDF document text
    • http://broadmoor80.com/clients/866172/File/4990415029.pdfIn PDF document text
    • http://njuhome.pl/ckfinder/userfiles/files/71691167870.pdfIn PDF document text
    • http://agendatourvietnam.com/hinhanh/file/21217425795.pdfIn PDF document text
    • https://amursvoidom.ru/media/files/lelox.pdfIn PDF document text
    • http://europeanprofservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/160afe66fcc0c8---lolajuguzibotulazageb.pdfIn PDF document text
    • https://tcufroghouses.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093c5c32a354---piworad.pdfIn PDF document text
    • http://gtshotel.it/images/file/jekujetazopetaribu.pdfIn PDF document text
    • https://mmagame.com/userfiles/file/xurenatu.pdfIn PDF document text
    • http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/160732a7a0ca08---deberorubexowetugu.pdfIn PDF document text
    • https://clubesolbra.com/uploads/files/38029990865.pdfIn PDF document text
    • https://ahi.com.ua/wp-content/plugins/super-forms/uploads/php/files/4cfc623368c35ffc726dbb91011cbde4/kefebedemasoduvapozaje.pdfIn PDF document text
    • https://completecollegestrategies.com/wp-content/plugins/super-forms/uploads/php/files/b5bb8da6aaa601efa5212f77131783ff/wagubapivinujajo.pdfIn PDF document text
    • http://www.bash.cl/media/file/84818723774.pdfIn PDF document text
    • https://hcs1000.org/wp-content/plugins/super-forms/uploads/php/files/1f45064855a4cf2a697e18aa803c482a/riwerifipasaxa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=free+fifa+19+coins+generatorPDF 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_off0000e6ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE6AC 17544 bytes
SHA-256: 68bc123d63793dc9b0f50a5f8380ee1763da5287d14f2ba37792a8580284f73d
font_01_sfnt_off000112fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x112FD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012b14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12B14 10664 bytes
SHA-256: 599a1fe29d802a8dc1d908c670352aca1f9eebfae4ef28606ee0a0f00e98dd10