Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eee9a9af66d0f6a…

MALICIOUS

PDF

81.8 KB Created: 2021-08-19 12:21:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 50724b647d89302b2e4780083d67c8c8 SHA-1: 9dd555afa2a92f2434a6a8ca82a40772233b6172 SHA-256: 5eee9a9af66d0f6af53e3985fa823f10963f842ae69e6fb94f66f3910a252975
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier. It contains numerous embedded URLs, many of which point to compromised WordPress sites, suggesting a link farm or phishing campaign. The document body is unreadable, but the heuristics indicate a deliberate structure for hosting external links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://queure.ru/uplcv?utm_term=how+to+change+throttle+position+sensor+ford+focus PDF link annotation
    • http://halvani.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a79320cbfa7---kofavizaruxowijakuratuj.pdfIn PDF document text
    • https://primeodontorj.com/wp-content/plugins/super-forms/uploads/php/files/ccd347673709550e2857fc093cad6e73/56810021774.pdfIn PDF document text
    • https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/98eaa1a55f70a2779882a4ac460977f0/rofikirajabisidujeguv.pdfIn PDF document text
    • https://curewelldiabetes.com/userfiles/file/97977509722.pdfIn PDF document text
    • http://www.kissdocs.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160ab711d03529---nebuvokapiwazu.pdfIn PDF document text
    • http://humanitool.ru/userfiles/file/17834125965.pdfIn PDF document text
    • https://www.spoton.pet/wp-content/plugins/super-forms/uploads/php/files/522obv1j08qdsdip9jpi551qsq/piwubimijodug.pdfIn PDF document text
    • http://yasaitogo.com/uploads/files/47919002004.pdfIn PDF document text
    • https://medsplus.us/admin/images/file/zenidusogoraxajikuzuf.pdfIn PDF document text
    • http://timatey.kz/wp-content/plugins/super-forms/uploads/php/files/iptfctdp964ker4dtgmpv633s2/89753802454.pdfIn PDF document text
    • http://alsumiri.net/wp-content/plugins/super-forms/uploads/php/files/c4aeb79bb1190a6a7702735a0fc9e528/12456938328.pdfIn PDF document text
    • https://www.mercedesbenzofaustinservice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092ebb663ca1---luzukalikejenomevunovudi.pdfIn PDF document text
    • http://hoangnamjsc.com/upload/files/fogisunipumawim.pdfIn PDF document text
    • http://www.stadion-zarya.ru/ckfinder/userfiles/files/kebafafamevisikanajizawib.pdfIn PDF document text
    • https://floridaholidayplanner.com/wp-content/plugins/super-forms/uploads/php/files/413fe82a7d2f243b9f99ef31f59f961b/80684570289.pdfIn PDF document text
    • http://autoscuolepintozzi.it/userfiles/files/tokunabolurabukoxobaga.pdfIn PDF document text
    • https://ijpdua.com/contents//files/navami.pdfIn PDF document text
    • http://szyuangang.com/UserFiles/file///numarivav.pdfIn PDF document text
    • https://iescolumbus.org/wp-content/plugins/super-forms/uploads/php/files/1db80a6168e627a21b7a9d420e0dd8d8/12046848653.pdfIn PDF document text
    • https://cristiandellavedova.com/wp-content/plugins/super-forms/uploads/php/files/7dd22e265e0479512c8d7d1ce6e819f9/19896668643.pdfIn PDF document text
    • http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/160f8c55c4e040---7405893569.pdfIn PDF document text
    • http://gilbertthomasreunion.com/clients/5/5f/5f56fe696be94dde62972871c8a9bc28/File/retupujivenegasepenume.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_off0000dad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAD0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f2e2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2E2 16540 bytes
SHA-256: 0d525ee3c10dd7fa046ee5e219936baf1e92cb30f8b581f7522f8740952ab55d
font_02_sfnt_off00011e02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11E02 11076 bytes
SHA-256: 82d783a8ea1acfbf8b1f202dd54cb7e0763c7347c3f6f55d49ee3a9fbd91a34e

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