Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ee4e60e303792a9…

MALICIOUS

PDF

93.5 KB Created: 2021-07-02 01:54:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-13
MD5: 71cd0f3aecc5260ed080b1dbb8441a8a SHA-1: 6520ebcd154d537fa8648beacd778be0dc86fc7d SHA-256: 5ee4e60e303792a988b28673dca9332fef2ea3af8f43106ef991096245ef9eb4
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains numerous links to external websites, many of which are hosted on compromised CMS upload directories. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM heuristics suggests the document is part of a link farm designed to distribute malware or conduct phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c636c1b3f63---walomuri.pdf In PDF document text
    • http://orosweb.hu/ckfinder/userfiles/files/nixavuwupefigatokufuj.pdfIn PDF document text
    • https://www.vigo.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/160b0aeae16aca---24822225882.pdfIn PDF document text
    • http://animationcoach.com/userfiles/file/87779218467.pdfIn PDF document text
    • https://topinsolventa.ro/userfiles/file/jeluzewat.pdfIn PDF document text
    • https://ecomassage.pt/wp-content/plugins/super-forms/uploads/php/files/h0c69hoocjthls0q441vbupb33/4413476004.pdfIn PDF document text
    • http://3duct.com/wp-content/plugins/formcraft/file-upload/server/content/files/160897509bc790---7219562596.pdfIn PDF document text
    • http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/j57croc86peadbprkf4i529ql2/45054060727.pdfIn PDF document text
    • http://al-bandak.com/userfiles/file/wekijeduw.pdfIn PDF document text
    • https://webmenuplus.com/images/file/dulujabemudubujolen.pdfIn PDF document text
    • https://aduanaldelvalle.com/userfiles/file/36970252223.pdfIn PDF document text
    • https://gfow.om/wp-content/plugins/super-forms/uploads/php/files/97qe0ltrkml12rd0e4ghgqhuc0/kugorunupokadivotikebodif.pdfIn PDF document text
    • https://home18.ru/wp-content/plugins/super-forms/uploads/php/files/110739efeb861caec9c84f91d164ebc1/69412257073.pdfIn PDF document text
    • http://imaginove.eu/data/Files/lulevex.pdfIn PDF document text
    • https://www.budgetskemaet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/160c438e516d9e---97230805441.pdfIn PDF document text
    • https://vetranhtuongmamnon.vn/wp-content/plugins/super-forms/uploads/php/files/3r025t0njestg1f35125aedv0t/rumamoronutiwasupe.pdfIn PDF document text
    • http://bridgesonthepark.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608e4ee081003---11546882660.pdfIn PDF document text
    • http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/160984af5e15f9---75664812250.pdfIn PDF document text
    • https://vandolderskb.com/images/usr/wuxozalusosubakekewe.pdfIn PDF document text
    • https://f1com.ge/wp-content/plugins/super-forms/uploads/php/files/3df178a434b088d52d5f93489b45dbc7/10360754657.pdfIn PDF document text
    • http://www.johnknox.ch/wp-content/plugins/formcraft/file-upload/server/content/files/160b1d6f373f79---84227852400.pdfIn PDF document text
    • http://studiotecnicodavico.eu/userfiles/files/xinavimoxugamidafol.pdfIn PDF document text
    • https://sumangold.net.vn/wp-content/plugins/super-forms/uploads/php/files/snj8rc46ipar5ag9ko8eepg1k4/97899842106.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/YTWXjIUwRh0/uplcv?utm_term=home+renovation+budget+template+excel+freePDF 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_off00010687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10687 11192 bytes
SHA-256: 9a36736db84bd1e39f33709058e9c101d9c45e6c8392500ad85804e0698d2d17
font_01_sfnt_off0001203c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1203C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001384e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1384E 17884 bytes
SHA-256: f5d54e417cc2b854b2bb857a79c9b36c1d87ab3d43534a993419f6f2ee51769f

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