Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2defc05e28d79a0…

MALICIOUS

PDF

92.1 KB Created: 2021-09-08 03:05:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12
MD5: ee787fa5f2e2050b2ce164226c219967 SHA-1: 135722b5e380b051ecc12248932397b6b30fafa8 SHA-256: f2defc05e28d79a0d6309301b5cce877523c65bb588eb2cd8dff4dc2f7fceca3
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a link farm pointing to multiple compromised websites, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. Although no scripts were extracted, the structure and embedded URLs are indicative of a malicious document designed to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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://swimproject.eu/wp-content/plugins/super-forms/uploads/php/files/00616d9efa5c9a2975e7a9885dc80eeb/lanedemafadozamegaretobij.pdf In PDF document text
    • https://healthmatters.me/userfiles/file/95096518595.pdfIn PDF document text
    • http://southfieldhigh1973.com/clients/2/27/27a5067865c8334ad4a5a1fd7642c928/File/sodozesivikazukodevij.pdfIn PDF document text
    • http://studiotecnicobonoli.com/userfiles/files/7597891726.pdfIn PDF document text
    • https://noks.cz/wp-content/plugins/formcraft/file-upload/server/content/files/160b49925359a7---perepilazopagewalonemu.pdfIn PDF document text
    • https://ethnicminorities.heephong.org/ethnicminorities/cmsadmin/ckfinder/files/68927615488.pdfIn PDF document text
    • http://asesorgubernamental.com/images/file/wusigijugokoloniwu.pdfIn PDF document text
    • http://cy2hand.com/userfiles/sadowumedazexejenufuzix.pdfIn PDF document text
    • https://nabsangram.com/userfiles/file/gabodolebeboluravanovi.pdfIn PDF document text
    • https://minutesnap.com/wp-content/plugins/super-forms/uploads/php/files/73748cb12da141012ed22e0bca8c5e59/dubadazabugana.pdfIn PDF document text
    • http://www.hotel-margherita.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d2ca7a839e0---80929870449.pdfIn PDF document text
    • https://amezdigital.com/wp-content/plugins/super-forms/uploads/php/files/4111bcc3bd751d7a3f487abeaca8668f/28960661275.pdfIn PDF document text
    • https://kassa-evotor.ru/wp-content/plugins/super-forms/uploads/php/files/ne8gbbq5u02j2qgc5dfpaq6rs2/54936084624.pdfIn PDF document text
    • http://teusz.pl/UserFiles/file/wurenatebesaxavunep.pdfIn PDF document text
    • http://chrisnoblelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/kujozij.pdfIn PDF document text
    • https://endeligmandag.no/e-brev/data/div/61309671198.pdfIn PDF document text
    • http://www.phonefixcomo.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070a64d66be1---28314405264.pdfIn PDF document text
    • http://www.nbrownies.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160d585dcb15dc---duxaledufejewozasujevoso.pdfIn PDF document text
    • https://kermanrooz.com/img/files/99354157174.pdfIn PDF document text
    • http://instant-image.net/UserFiles/Site/File/sulewuzavivamipijozibiv.pdfIn PDF document text
    • http://jump360.co/upload/files/20210628081354.pdfIn PDF document text
    • https://atl-50.com/files/file/2000640666.pdfIn PDF document text
    • https://sellos-mecanicos.com/wp-content/plugins/super-forms/uploads/php/files/e1dc82ec00296625b7107159edb1f5e9/remobinesabelurafibagow.pdfIn PDF document text
    • http://www.cuerpomenteyespiritu.es/wp-content/plugins/formcraft/file-upload/server/content/files/160a28154676f1---tazibasoxiduw.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/Om9ozkHLxGw/uplcv?utm_term=britax+marathon+clicktight+owners+manualPDF 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_off0000f88e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF88E 11112 bytes
SHA-256: 5484bba2f549c19c87f279e1570669d40b1781efd47cf7c5a332a7c5b84b854f
font_01_sfnt_off00011273.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11273 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012a85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A85 21396 bytes
SHA-256: 168472bea762170ecba7de74393a835ed61519ea30517ce6594fbba3072226f0

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