Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6dfe64ad6ca28f0…

MALICIOUS

PDF

78.1 KB Created: 2021-09-04 12:14:46 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: 9a3ce9f7e83e52f86fa75869c8a1ab2b SHA-1: 43d1ececab4873371278c08822a9e25988bb7c3c SHA-256: d6dfe64ad6ca28f091e038e3f334793d27a61dc7dc8ad5e8c81f9d6cbef87605
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF was detected as malicious by ClamAV and an ML classifier, indicating it is likely a phishing or malware distribution lure. The numerous embedded URLs point to a link farm hosted on various domains, many of which appear to be compromised or disposable. The file's structure and the presence of external URI heuristics suggest it is designed to redirect users to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5019

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://lbhodgereunion.com/clients/3/38/38e1f81cb1ac74d12d86c8ba87866b9f/File/86821524704.pdf In PDF document text
    • http://absolutelyneon.com/userfiles/file/83388804352.pdfIn PDF document text
    • http://compie.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1612a6bf8def55---33354241765.pdfIn PDF document text
    • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/7a28e1c3cd0bddff34605e7f972553ba/pelavoxabaxovagafusumevel.pdfIn PDF document text
    • https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cbfd2db1268---gumojo.pdfIn PDF document text
    • http://judyzscotties.com/clients/1/1f/1f1ef5c9f72ce0e5bea5babf356718c6/File/nipewobojuvapira.pdfIn PDF document text
    • http://shukokai-voves.fr/userfiles/file/wakonafadenuj.pdfIn PDF document text
    • https://togeltop.net/contents/files/farimebulel.pdfIn PDF document text
    • http://www.risingstars.com.tr/wp-content/plugins/formcraft/file-upload/server/content/files/16100618a42fb9---95294372691.pdfIn PDF document text
    • http://lapenya.cat/imgjovesnaves/file/vexazetizav.pdfIn PDF document text
    • http://ozona.pt/wysiwygfiles/file/99666279168.pdfIn PDF document text
    • http://gsoam.ge/wp-content/plugins/formcraft/file-upload/server/content/files/1608e9ee3e0a0b---dawofupetazaxavusozofisu.pdfIn PDF document text
    • https://freedomhypnosisnyc.com/wp-content/plugins/super-forms/uploads/php/files/9b574a941bdc702d8ac0bfb2f3596e10/14661807210.pdfIn PDF document text
    • http://wtmongolia.com/materials/file/25606978834.pdfIn PDF document text
    • https://prana.video/wp-content/plugins/super-forms/uploads/php/files/jpksf1t8k4gm2557479msd4iqs/21441392282.pdfIn PDF document text
    • https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/qmtj1bmiigo3vo8iarcaivclcn/kuxesuvezomij.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607dee0841afc.pdfIn PDF document text
    • http://tahyuh.com/uploads/files/202108300600483750.pdfIn PDF document text
    • http://polenes.cl/userfiles/file/venururuvewatewawun.pdfIn PDF document text
    • http://4reality.cz/userfiles/files/23452644308.pdfIn PDF document text
    • https://www.simcoerecovery.net/wp-content/plugins/super-forms/uploads/php/files/sbcs7octi5gtb2q0m19jv6fst4/danimisemigefivoni.pdfIn PDF document text
    • https://khabul.mn/mmpa/userfiles/files/70804152021.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/ngfLrbzwjls/uplcv?utm_term=stenographer+book+pdfPDF 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_off0000f33c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF33C 10780 bytes
SHA-256: db02721bae29a1c07854d0b6ef3cd7ba57b538e51c63d0501d752da1bd97d1d2
font_01_sfnt_off00010b97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B97 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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