Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e2e5d366a1d3795…

MALICIOUS

PDF

63.7 KB Created: 2021-09-11 23:52:55 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: d259c28651788e631b9a45414064d466 SHA-1: 7637d35b169676c9970edf28134135c2b769700d SHA-256: 8e2e5d366a1d37959fd9e1440f93234bbae76ecadf20687ac8ef3f71bf317f2e
124 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8566

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 http://kahasat.cz/data/file/voxedorogedisorubuli.pdf In PDF document text
    • https://cytairtool.com/test/userfiles/file/20210908_60193.pdfIn PDF document text
    • http://photonart.nl/phpcmsys/file/68623224064.pdfIn PDF document text
    • http://j-club.eu/userfiles/file/56235627748.pdfIn PDF document text
    • http://meyergarden.com/ckfinder/userfiles/files/xikosopepojunole.pdfIn PDF document text
    • http://xn--22cjbbm2eyae3ehabdb4kqdtae3dxnnc1fhf.com/user_img/files/parobepudedidavubufewax.pdfIn PDF document text
    • http://polyacer-ecp.com/userfiles/files/20210909_003753.pdfIn PDF document text
    • http://dreamwith.gni.kr/ckupload/files/59359249607.pdfIn PDF document text
    • https://tecnibat.net/uploads/archivos/67378208889.pdfIn PDF document text
    • https://masihpt2.com/contents/files/35268166312.pdfIn PDF document text
    • http://savoie-outils-coupants.com/ckfinder/userfiles/files/7103718503.pdfIn PDF document text
    • http://naoshima-habitant.com/images/blog/file/dumikubap.pdfIn PDF document text
    • http://samurairamenbar.com/uploads/files/55946451959.pdfIn PDF document text
    • http://identik.hu/editor_up/1506160570.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/ramaxonu.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612faadbb467a---29684727223.pdfIn PDF document text
    • http://neuchina.org/userfiles/file/69156634456.pdfIn PDF document text
    • http://wittymall.com/multimedia/userfiles/file/6525898270.pdfIn PDF document text
    • http://tevukasveza.lt/ckfinder/userfiles/files/valesefebosutuve.pdfIn PDF document text
    • https://servauto.fr/img/user/file/35926259363.pdfIn PDF document text
    • http://clean-ecology.com/Upload/files/fitunebonaxesak.pdfIn PDF document text
    • https://cuichi177.com/uploads/files/202109011345235261.pdfIn PDF document text
    • http://www.rafaellucenaehijos.com/ckfinder/userfiles/files/91175839792.pdfIn PDF document text
    • https://sanipro.ma/app/webroot/uploaderfiles/87654842732.pdfIn PDF document text
    • http://ipoz.pl/userfiles/file/sepenulevuwaf.pdfIn PDF document text
    • https://mallncart.com/userfiles/files/depalogalivuvafivovir.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=best+free+iptv+app+for+firestick+2020PDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000da8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA8C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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