Malicious PDF — malware analysis report

Static analysis result for SHA-256 600d8394f8d7cbd1…

MALICIOUS

PDF

99.0 KB Created: 2021-08-15 07:00:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: 508096996f7ce65474320c9ac03cb952 SHA-1: 41e2ee63cef611f7ba9d8ebbb75b7af098edefdd SHA-256: 600d8394f8d7cbd1fdf1801f6f1bbed35a302679648a9ec8182dac732042a87a
156 Risk Score

Malware Insights

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

This PDF was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains numerous links, many pointing to compromised CMS uploads and disposable hosting, suggesting a link farm designed to redirect users to malicious sites. The embedded URLs and the nature of the heuristics indicate an attempt to exploit users via malicious links, likely for phishing or further malware delivery.

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://www.pennlighting.com/wp-content/plugins/super-forms/uploads/php/files/783c9598a88aba4cbeac31c9b851e8f2/pudegijetudozepexobunot.pdf In PDF document text
    • http://accurateverdicts.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ae20a83b1c7---27364316212.pdfIn PDF document text
    • http://trackeg.com/en/wp-content/plugins/formcraft/file-upload/server/content/files/160a77353490f0---ribulamizumifunufax.pdfIn PDF document text
    • http://www.vivelamusica.es/wp-content/plugins/formcraft/file-upload/server/content/files/1607584ef11d9f---pafepot.pdfIn PDF document text
    • http://lso-msm.fr/userfiles/file/56387662767.pdfIn PDF document text
    • http://ziepniekkalns.lv/wp-content/plugins/formcraft/file-upload/server/content/files/160717b2bb63af---riwesikikudugasaxaxem.pdfIn PDF document text
    • https://avgdesign.com/userfiles/file/sepajezonuxelusekob.pdfIn PDF document text
    • http://nanumed.ro/uploads/files/19824422666.pdfIn PDF document text
    • http://tkhomedeco.com/assets/uploads/ckedit/files/20210622195443.pdfIn PDF document text
    • https://wickedcheesy.com/images/file/11707948924.pdfIn PDF document text
    • https://canadiancontractorservices.com/wp-content/plugins/super-forms/uploads/php/files/ddul5hq7uesmvtidu9fra28nr3/finogarukesefojepenemuk.pdfIn PDF document text
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610c3fb9407e6---kevajurepulasufufad.pdfIn PDF document text
    • http://oodow.cn/upload/file/210621021023357195f57gnx4k9wuz.pdfIn PDF document text
    • http://furniture83.com/upload/files/75378968022.pdfIn PDF document text
    • http://www.191seo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a55194b2bf---35395444870.pdfIn PDF document text
    • http://www.rkcomdesignservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607b468a8f64b---madaxobatera.pdfIn PDF document text
    • https://aquatrustfina.com/userfiles/file/kabos.pdfIn PDF document text
    • https://www.colegiodesafio.net/home/wp-content/plugins/formcraft/file-upload/server/content/files/160e68a7c8fe49---vorunafepi.pdfIn PDF document text
    • http://studiopedrazzini.eu/userfiles/files/felodarut.pdfIn PDF document text
    • http://flatadministration.com/uploades/fckeditorfile/85280269416.pdfIn PDF document text
    • http://techbis.pl/files/file/12673309284.pdfIn PDF document text
    • https://www.inkfactory.pk/wp-content/plugins/formcraft/file-upload/server/content/files/160be40895bb3f---wimamorirufuxeloxisagisax.pdfIn PDF document text
    • https://selltoob.in/ci/userfiles/files/lezivakabexuvam.pdfIn PDF document text
    • https://horgaszvelem.hu/ckfinder/userfiles/files/72912565700.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/1xuhb7AK25c/uplcv?utm_term=calor+cedido+y+absorbido+ejercicios+resueltosPDF 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_off00011933.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11933 10772 bytes
SHA-256: 1a79dd95bd5b7f7b86bb8e731606add333abc40bc9ad9cf81d441e36399c7162
font_01_sfnt_off0001321f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1321F 19284 bytes
SHA-256: 2b44b6af6ed5a28a2bcd4a2c74e7de8b7ce9f290eb7db81708667b0dcb3e5b93
font_02_sfnt_off0001633c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1633C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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