Malicious PDF — malware analysis report

Static analysis result for SHA-256 e63acec584e68409…

MALICIOUS

PDF

76.3 KB Created: 2021-07-18 02:32:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-21
MD5: ea656ee1dfa625d0b725ae3e469bccd9 SHA-1: 42540acbd295596e53235f2815c3411c58be5389 SHA-256: e63acec584e684098345f35d7df3c80e31a722481bad0e23304f9bec9450336d
154 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. It contains numerous links pointing to compromised WordPress uploads and other disposable hosting, suggesting a link farm designed to redirect users. The ML classifier also indicated a high probability of maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6966

Heuristics 5

  • 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
  • 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://securitydirect.it/wp-content/plugins/super-forms/uploads/php/files/b395fd2f3504455aab461ffda186536e/11062950415.pdf In PDF document text
    • https://apotekatia.ba/fajlovi/31565039928.pdfIn PDF document text
    • https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16093a24bb37af---59308938721.pdfIn PDF document text
    • http://allaboutdowney.com/userimages/73600573224.pdfIn PDF document text
    • https://yasacompany.com/upload/files/pozijepu.pdfIn PDF document text
    • https://seitonsolutions.com/ci/files/pojivupiwafatebavomuj.pdfIn PDF document text
    • https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/cddpkg0esnjb1ut6odg99625au/95186250457.pdfIn PDF document text
    • https://balbok.net/admin/ckfinder/userfiles/files/26981683859.pdfIn PDF document text
    • https://www.geosuiteonline.de/wp-content/plugins/formcraft/file-upload/server/content/files/1608aa40cdd1df---27572383630.pdfIn PDF document text
    • https://baconbites.com/wp-content/plugins/super-forms/uploads/php/files/r8g220avqug770ui0tb00hrir1/86394232695.pdfIn PDF document text
    • https://lashmakerpro.it/wp-content/plugins/super-forms/uploads/php/files/vqsselnc7vled0bdav5hbp5hr4/tixupup.pdfIn PDF document text
    • http://xn----gtbercbfedtm3b.xn--p1ai/admin/ckfinder/userfiles/files/kiwubugitovasolami.pdfIn PDF document text
    • http://hurtglass.pl/upload/file/gaxovuloda.pdfIn PDF document text
    • http://vector-luczak.pl/new/fck_user_files/file/7993203815.pdfIn PDF document text
    • https://event-connections.net/wp-content/plugins/formcraft/file-upload/server/content/files/1606f14a896077---87275841426.pdfIn PDF document text
    • https://sindonis.com/userfiles/file/modivamamevu.pdfIn PDF document text
    • https://schreinerheusi.de/wp-content/plugins/formcraft/file-upload/server/content/files/160df76970a9c1---rumogasamefogodosimoku.pdfIn PDF document text
    • https://eduinfinite.com/wp-content/plugins/super-forms/uploads/php/files/30e59edf06630a32fead9abf361a7936/37666539987.pdfIn PDF document text
    • http://clarksville.net/wysiwygfiles/file/12107412698.pdfIn PDF document text
    • http://sacoorhealth.pt/site/upload/file/sewiputezugita.pdfIn PDF document text
    • https://autosaloncenter.com/uploads/file/tobukutakududasuribonip.pdfIn PDF document text
    • http://adveotec.com/img/file/95130828744.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=how+to+attach+pdf+to+excel+spreadsheetPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e1a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1A2 16944 bytes
SHA-256: aea1f6fec772e19765d29083185c3576183c79184f3443efcda78e83fbf4c832
font_01_sfnt_off00010dd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10DD9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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