Malicious PDF — malware analysis report

Static analysis result for SHA-256 fee09dc4a2d2f754…

MALICIOUS

PDF

82.6 KB Created: 2021-09-08 06:07:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: f77606ffd1ced87c73e2f05238e3f414 SHA-1: b24ce373441ce0d542e70683b842643d760cd2a3 SHA-256: fee09dc4a2d2f754b8cf082aa5a005e6755eb35d0799a7d7dc058269364e5965
164 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains a link farm pointing to multiple compromised WordPress sites, suggesting an attempt to distribute malicious files or redirect users to phishing pages. The presence of a 'download button' lure further supports the malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9974

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://totalyoumovement.com/wp-content/plugins/formcraft/file-upload/server/content/files/16129ef72192ba---dinazet.pdf In PDF document text
    • http://foodchemsino.com/d/files/rosobesetavadedasisesi.pdfIn PDF document text
    • https://mymovingestimate.com/wp-content/plugins/super-forms/uploads/php/files/2e495a39a910ba1284da369e866229f0/17546111351.pdfIn PDF document text
    • http://smartcookieacademy.com/wp-content/plugins/formcraft/file-upload/server/content/files/16085ca1a2925a---14983670173.pdfIn PDF document text
    • https://castel.ro/userfiles/file/zowuzosinozom.pdfIn PDF document text
    • https://tmtteks.com/files/25893799955.pdfIn PDF document text
    • https://bursakaynak.com/userfiles/file/sovit.pdfIn PDF document text
    • https://nanyangtextile.com/userfiles/file/83820866509.pdfIn PDF document text
    • http://kolaykanal.com/userfiles/files/dikor.pdfIn PDF document text
    • http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160b05e65813bc---86643312401.pdfIn PDF document text
    • http://stlnsk.ru/uploads/file/nakalodarawekuxuvu.pdfIn PDF document text
    • http://oppedisanorobertosrl.com/userfiles/files/84897477849.pdfIn PDF document text
    • https://erinmillssmilesdentistry.com/wp-content/plugins/super-forms/uploads/php/files/3utpel8gbaes9eb4q770ksbf25/nuvevadebonegexufa.pdfIn PDF document text
    • http://portalkucharski.pl/app/webroot/media/files/gawibobavaloko.pdfIn PDF document text
    • https://mintowncoffee.net/uploads/images/files/58443286492.pdfIn PDF document text
    • http://mingmitrcoffee.com/user_img/files/67679712572.pdfIn PDF document text
    • https://www.vbclighting.com/wp-content/plugins/super-forms/uploads/php/files/3c96b2ccf4f13e31ca43a85a4d579361/11413909301.pdfIn PDF document text
    • http://business-plan-capalpha.fr/mbp/upload/images/images/upload/ckfinder/43894476674.pdfIn PDF document text
    • http://eatoceanic.iorderfoods.com/uploads/files/nolewiwumilenejukazuluvam.pdfIn PDF document text
    • https://www.pfgpartners.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160856731b9e00---numagifopefusekasigej.pdfIn PDF document text
    • http://www.gcsystem.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160cad95c37ce5---lokesuzat.pdfIn PDF document text
    • http://mirembeestate.co.ug/wp-content/plugins/formcraft/file-upload/server/content/files/161317ad16af12---87198230744.pdfIn PDF document text
    • http://ilksolar.com/Images/Media/files/60231530910.pdfIn PDF document text
    • http://www.predia.cz/userfiles/file/13209256189.pdfIn PDF document text
    • http://www.qookspot.kitchen/wp-content/plugins/formcraft/file-upload/server/content/files/1609f2a904b9cc---xujejanozawatemewek.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=microsoft+movie+maker+tutorial+pdfPDF 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_off0000dbc0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBC0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f3d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3D2 18308 bytes
SHA-256: d419e2e155837467b564a07e617b44b33b84916ec9c5c9cf2e59246d354312d2
font_02_sfnt_off00012300.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12300 10928 bytes
SHA-256: dda4670f405c50886f1e4382d4aafa2fb935cf53df0424eddeaedfb6ad135a9d