Malicious PDF — malware analysis report

Static analysis result for SHA-256 d0378bff2a0b4eff…

MALICIOUS

PDF

84.3 KB Created: 2021-09-09 05:21:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 73e9583f3434fa9a9e823a8d10721f43 SHA-1: 023d2647abab0f4ceb7a64f3dd960dbad2678b67 SHA-256: d0378bff2a0b4effb4f6a2958c2ca67f193df9f5518be73604aed1e9820adb31
156 Risk Score

Malware Insights

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

This PDF was identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. The document functions as a link farm, directing users to multiple external websites, some of which are hosted on compromised CMS platforms. The presence of numerous links, including those with UTM parameters, suggests an attempt to lure users to potentially malicious destinations for phishing or malware distribution.

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 http://amwordpress.org/wp-content/plugins/formcraft/file-upload/server/content/files/16131cefc69f4e---17635389353.pdf In PDF document text
    • https://kingdomofgodmn.org/userfiles/files/fevinavilurelefuma.pdfIn PDF document text
    • https://www.leasing.net.in/ckfinder/userfiles/files/kobogudezekujasu.pdfIn PDF document text
    • http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/f7057d9a9a07554c8c7e4b5e7b71d64a/29004965478.pdfIn PDF document text
    • https://strefaokazji.pl/uploaded/file/29907932987.pdfIn PDF document text
    • https://www.burit.net/wp-content/plugins/formcraft/file-upload/server/content/files/1613927c51fe26---tapenibutonadawiwa.pdfIn PDF document text
    • http://diversecityuk.com/userfiles/file/75817101604.pdfIn PDF document text
    • https://aznamaste.com/ckfinder/userfiles/files/gisaxevudefa.pdfIn PDF document text
    • http://kdbelektrotechniek.nl/uploads/file/36382086721.pdfIn PDF document text
    • http://ryukatsu.com/userData/board/file/2706470629.pdfIn PDF document text
    • https://derey.nl/app/webroot/files/userfiles/files/29986564771.pdfIn PDF document text
    • http://tdbm.vn/upload/files/xalav.pdfIn PDF document text
    • http://botosani.ro/img/uploads/file/morori.pdfIn PDF document text
    • https://samirkumarpaul.com/ckfinder/userfiles/files/duvik.pdfIn PDF document text
    • http://studiospazioambiente.it/userfiles/files/18184180773.pdfIn PDF document text
    • http://conservationenergy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16132fac08e615---vogulezidazamilugov.pdfIn PDF document text
    • http://assotechne.eu/userfiles/files/87915988839.pdfIn PDF document text
    • http://condosworld.com/abisol1/userfiles/files/7766388563.pdfIn PDF document text
    • https://bohemiamaestro.com/webpagebuilder/ckfinder/userfiles/files/roxaguwinuba.pdfIn PDF document text
    • http://novafish.it/userfiles/files/jaliximuxe.pdfIn PDF document text
    • https://learnrkbin.jugalbandiresearch.com/ckfinder/userfiles/files/nenakekusew.pdfIn PDF document text
    • http://ebara.com.hk/ckfinder/Zenith/userfiles/files/wexigas.pdfIn PDF document text
    • http://amidoux-peintures.com/ckfinder/userfiles/files/10509828132.pdfIn PDF document text
    • http://hockjoohin.com/admin/uploads/file/61104418649.pdfIn PDF document text
    • https://mintowncoffee.net/uploads/images/files/vigezewupapage.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=internet+de+pc+a+android+por+usbPDF 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_off0000e2a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE2A3 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000faba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFABA 10652 bytes
SHA-256: 4fbae4ba140f23dac4e1a8a964c75d5605c5d7559a87da14eacb7196b55b51f2
font_02_sfnt_off00011301.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11301 18824 bytes
SHA-256: 55dd89839a2787b31ef67328f53091be836cc6084954c3e67dd0889f1d82a626

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