Malicious PDF — malware analysis report

Static analysis result for SHA-256 5cc3667892af24d7…

MALICIOUS

PDF

113.3 KB Created: 2021-06-26 06:05:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-08-25
MD5: 9966f9a99adde7646dc31a9128ff30e8 SHA-1: 5cb66e33e8f7dd2323943ad275670c3ca2e39164 SHA-256: 5cc3667892af24d7496ba30e2972e84d79de32dd06c1c25df70ca6de9f0a6029
156 Risk Score

Malware Insights

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

This PDF was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links pointing to compromised websites and disposable hosting, suggesting a phishing or malware distribution scheme. The document body is unreadable, but the presence of external URIs and compromised CMS upload links indicates an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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.phoenixdentalacademy.co.uk/wp-content/plugins/super-forms/uploads/php/files/78ff7e9151938f004f1c48a3cf488583/70350018092.pdf In PDF document text
    • https://creationstationdance.com/wp-content/plugins/formcraft/file-upload/server/content/files/16070fc8b1bf08---87275710733.pdfIn PDF document text
    • https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/201g8bd8re8inns7a4hu5on0b1/80007633485.pdfIn PDF document text
    • http://cgt-fo-csc.fr/wp-content/plugins/formcraft/file-upload/server/content/files/1608c82f31138c---miridademadipibedijo.pdfIn PDF document text
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/6eb7ac992c7eab80a1526bf941cd53e2/katakatojenutigovefub.pdfIn PDF document text
    • http://abimobiliare.pl/pliki/File/fekab.pdfIn PDF document text
    • http://am-assets.com/aom/magnolia/userfiles/file/2123776274.pdfIn PDF document text
    • https://doitsolutions.co/wp-content/plugins/super-forms/uploads/php/files/92a8587efcfde0657223f1fbc4dcb8a0/79541984708.pdfIn PDF document text
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/7828d6a56e1be3487e334d6c425dc200/56765457229.pdfIn PDF document text
    • http://angelcabrera.com/FCKfiles/file/74608321033.pdfIn PDF document text
    • http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c1dbb1ac1a---2611715746.pdfIn PDF document text
    • https://ifacemount.com/wp-content/plugins/super-forms/uploads/php/files/p7reumgbd32d85dtqo5jqh33pu/88566706461.pdfIn PDF document text
    • http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1609556d0b3591---82649762866.pdfIn PDF document text
    • https://stefandes.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cd1b31ecab4---97725894583.pdfIn PDF document text
    • http://myucmas.com/userfiles/file/leliwidifivufibuxoxe.pdfIn PDF document text
    • https://beaufortbond.com/wp-content/plugins/super-forms/uploads/php/files/5d5f579f01eb7bb8c426719c605a1ef3/62351405541.pdfIn PDF document text
    • http://dobrasekacka.cz/userfiles/file/89681713113.pdfIn PDF document text
    • https://canvasations.com/wp-content/plugins/super-forms/uploads/php/files/hfh019envg70bc7q478n6vfbe2/33929580916.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/3vuEKuznOb8/uplcv?utm_term=sindrome+demencial+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_off000153f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x153F9 10588 bytes
SHA-256: 9f9dfdea7659f1121d5f450660c3d45d6c289cd8f7952615870531f41a55dfa8
font_01_sfnt_off00016c12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x16C12 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00018424.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x18424 21408 bytes
SHA-256: f7707e04a598549abcafa7918ea180d0f0c9ada09274bb183836be07f34e2d48

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