Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e69a5250b925f09…

MALICIOUS

PDF

81.6 KB Created: 2021-08-18 08:29:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: fd5061a8465df3a20a167e85faff28ff SHA-1: 85e70da1e874314f368a1208036fe18cbf018bf3 SHA-256: 0e69a5250b925f090552f0ef55ed1cd2dca55cc328a79d55edee5817e3854b32
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous links pointing to compromised websites and disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of a link farm designed to lure users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://garglob.ru/uplcv?utm_term=how+to+write+a+resignation+acceptance+email PDF link annotation
    • http://alnadaoil.com/userfiles/file/gerowasezodivuragovalifim.pdfIn PDF document text
    • https://www.nobleorthodontic.com/wp-content/plugins/super-forms/uploads/php/files/8f2308f12ce61de27f91c6c7c6af76f2/kagaked.pdfIn PDF document text
    • https://visionbrindes.com/admin/fckeditor/userfiles/file/43617239928.pdfIn PDF document text
    • http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb44d47bcb3---80173582556.pdfIn PDF document text
    • https://alfa-clining.ru/wp-content/plugins/super-forms/uploads/php/files/79e26674069e82eff3b195ad8e8bbd55/83677352841.pdfIn PDF document text
    • http://abwingscolley.com/uploads/files/43020264844.pdfIn PDF document text
    • http://smepil.com/ckeditor/userfiles/files/negixe.pdfIn PDF document text
    • http://analogsys.com/uploaded/file/1266284259609587a42985e.pdfIn PDF document text
    • https://senzedigicraft.com/wp-content/plugins/super-forms/uploads/php/files/57ea62719d54f5237560dea2283a1d25/96988665855.pdfIn PDF document text
    • http://webinaris.org/ckfinder/userfiles/publics/files/vifipotebinadifot.pdfIn PDF document text
    • https://sogelec-eng.com/files/ckfinder/files/65151246504.pdfIn PDF document text
    • http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cc8279312b---togoritese.pdfIn PDF document text
    • http://serendipityorlando.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e54f061f74---gezuvixisope.pdfIn PDF document text
    • http://boisehighclassof1965.com/clients/879780/File/zagujemuvixajilafedo.pdfIn PDF document text
    • https://airshow-bg.com/file/81177040607.pdfIn PDF document text
    • https://cdmsig.com/ckfinder/userfiles/files/resoxis.pdfIn PDF document text
    • https://codecs.ro/images/file/66232135505.pdfIn PDF document text
    • http://www.inhd.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16089469c6749e---vexekakitomal.pdfIn PDF document text
    • https://floridaholidayplanner.com/wp-content/plugins/super-forms/uploads/php/files/a9802a3c77b61c24c0022c95aec63d63/12507662305.pdfIn PDF document text
    • http://munsusa.org/userfiles/file/20210605144730.pdfIn PDF document text
    • http://andlupa.com/userfiles/file/70092245711.pdfIn PDF document text
    • https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/1609e830680843---jipefatewax.pdfIn PDF document text
    • https://www.bouldersudbury.org/wp-content/plugins/formcraft/file-upload/server/content/files/160b20392adcf3---datukizar.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_off0000dac6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAC6 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f2d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2D8 16504 bytes
SHA-256: 2d142b918017d32f55c8a855db5d7ef487216725a65a849afd700f11b72982b4
font_02_sfnt_off00011dcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11DCB 10792 bytes
SHA-256: c1242faf61b383926ed4579edf2b72336571c1698792afe7d2accfaf6a7b22fe

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