Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae1ea468199db078…

MALICIOUS

PDF

86.2 KB Created: 2021-09-20 02:06:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 5619c1cf329e7b30612c088c3fb42ce4 SHA-1: 67b0ede1754efaf86048eb1ee2237f6ff0baa8c5 SHA-256: ae1ea468199db0783af33063a390c288bd3ed5771376ad40bfa453d76ce8d9ef
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as Pdf.Phishing.Trojan. The document contains a large number of embedded URLs, many pointing to compromised websites or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the overall detection profile indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

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://cructi.ru/uplcv?utm_term=zombie+derby+2+hacked PDF link annotation
    • https://jyapa.com/jhuoyue/uploadfiles/98538732641.pdfIn PDF document text
    • https://landlorddebtadvisory.com/wp-content/plugins/super-forms/uploads/php/files/768730cecaf220304b9cf64b858318a6/74192162214.pdfIn PDF document text
    • http://shinyoungvalve.com/userData/board/file/wukevas.pdfIn PDF document text
    • http://ktcz.eu/files/files/23896669611.pdfIn PDF document text
    • http://ghibms.com/userfiles/files/81091005261.pdfIn PDF document text
    • http://ghettaetamionarchitetti.it/userfiles/files/jorexobaparemawutomiz.pdfIn PDF document text
    • http://alothongtin.com/upload/FCK/file/87022294991.pdfIn PDF document text
    • http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16143c6d6293e3---97256910746.pdfIn PDF document text
    • http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/161327e06a1acd---1944028806.pdfIn PDF document text
    • http://mirutte.com/newsfiles/files/pofaso.pdfIn PDF document text
    • https://i-intelli.com/ckfinder/userfiles/files/lexakudizevekikajapowos.pdfIn PDF document text
    • https://bykevin.com/wp-content/plugins/super-forms/uploads/php/files/a7c7b2413f9309ef634a9d6f3af643b9/41307422084.pdfIn PDF document text
    • http://giorgimpianti.com/userfiles/file/66613961170.pdfIn PDF document text
    • http://fonnepal.org/userfiles/file/55659455106.pdfIn PDF document text
    • https://rts-wm.com/ckfinder/userfiles/files/ganikugun.pdfIn PDF document text
    • https://atiksigorta.com/files/gafijukoxed.pdfIn PDF document text
    • http://www.gc-antey.ru/ckfinder/userfiles/files/84254036458.pdfIn PDF document text
    • http://wellnesszeewolde.nl/site/data/ws/files/xusofane.pdfIn PDF document text
    • http://prosefkuchare.cz/userfiles/rufelefibiwupexatex.pdfIn PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/16137e56e97804---50947970490.pdfIn PDF document text
    • http://valeneighbors.com/userimages/foboliwifalopolasupev.pdfIn PDF document text
    • https://batdongsandothanh.vn/luutru/files/55251900786.pdfIn PDF document text
    • http://chinhsuasolieu.com/media/files/78216210842.pdfIn PDF document text
    • https://sim2007.com/files/guvaboruforog.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_off0000ea3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA3C 18016 bytes
SHA-256: 0ebd99713b1c425df8ea9926f40956fc4fd3b6e40518898e48fb69d29da7a08b
font_01_sfnt_off00011913.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11913 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0001312a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1312A 10648 bytes
SHA-256: ee2d7eb63be8196c07f2e80dee325b137a1dfc2b4c1598384e8967d373977e13

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