Malicious PDF — malware analysis report

Static analysis result for SHA-256 f74d8d48a8d0a90f…

MALICIOUS

PDF

56.8 KB Created: 2021-09-21 07:38:11 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: c62eb7bef59d26cdc91bb142e805c73e SHA-1: 4254357f66819f3995ef3fc3d371cd988060af8b SHA-256: f74d8d48a8d0a90f0ea07e7b884c6e5887d35deb72a1808435a770d753f880f1
124 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan'. The file also exhibits characteristics of a link farm, with numerous distinct hosts and disposable domains, suggesting an attempt to obscure the ultimate destination of the user. The ML classifier also indicated a high probability of maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7061

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 https://lesrimaudieres.com/images/uploads/file/mulilumanumemurexa.pdf In PDF document text
    • https://movie2book.com/userfiles/file/nelerakipev.pdfIn PDF document text
    • http://christschoolblr.in/userfiles/file/76177011633.pdfIn PDF document text
    • https://www.mercato.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/161304d11e4d24---danonevigaxowefupa.pdfIn PDF document text
    • http://krallarintavugu.com/upload/file/fesekexubewer.pdfIn PDF document text
    • http://eg-connect.com/uploads/editorfiles/file///75663637555.pdfIn PDF document text
    • https://www.hermanosvalerorecio.com/ckfinder/userfiles/files/95788115831.pdfIn PDF document text
    • http://h-p-n.fr/catalogue_dynamique/file/61596158756.pdfIn PDF document text
    • http://concilianavarra.com/userfiles/files/23642317793.pdfIn PDF document text
    • http://satisfytech.com/ck/upload/files/19255334647.pdfIn PDF document text
    • https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/1613ace3996262---93049482863.pdfIn PDF document text
    • https://capecoralliving.com/media/file/tamoterajebuxu.pdfIn PDF document text
    • http://closehorses.com/userfiles/file/fogebodumuliridado.pdfIn PDF document text
    • http://churchontherockuk.org/home/churchontherock1/public_html/userfiles/files/46343401893.pdfIn PDF document text
    • https://kanat.com/upload/ckfinder/files/96932232802.pdfIn PDF document text
    • https://bizimpin.com/calisma2/files/uploads/60002434264.pdfIn PDF document text
    • http://kamerton.nl/clientfiles/xofivagiwaja.pdfIn PDF document text
    • http://only-svet.ru/upload/files/taxaduxozuxo.pdfIn PDF document text
    • https://www.terraton.com.my/ckfinder/userfiles/files/24237637353.pdfIn PDF document text
    • https://aprenda-atdi.com/uploads/files/bidovuta.pdfIn PDF document text
    • http://rkmaster.ru/uploads/files/56945443195.pdfIn PDF document text
    • http://liveisagenix.com/ckfinder/userfiles/files/besibiribiminirujifawo.pdfIn PDF document text
    • https://officialbacknumber.org/editor_up/23099565950.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=lajukan+internet+digi+androidPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c514.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC514 10488 bytes
SHA-256: 6e98d2449da9ad9bdf839753094aeb2da4f2b068f91cbc267465a90fc1a25279

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