Malicious PDF — malware analysis report

Static analysis result for SHA-256 89f2b7ae20a4daa2…

MALICIOUS

PDF

70.3 KB Created: 2021-09-24 11:27:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 7c41e73e324583dd8582db95d93d82ec SHA-1: 227b553a66658036a7c016642cb6a262e0baaf58 SHA-256: 89f2b7ae20a4daa2796be484cd68ecd49254000ef3f222d31e87a669fa1a657e
124 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm on disposable hosting, with numerous embedded URLs pointing to potentially malicious domains. The presence of these links suggests the document is designed to redirect users to phishing sites or download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7833

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://medvor.ru/uplcv?utm_term=ex+with+benefits+full+movie+free+watch PDF link annotation
    • http://doremimarlikinsaat.com/userfiles/file/4137607035.pdfIn PDF document text
    • http://sakulchaiplace.com/Uploads/file/17921254219.pdfIn PDF document text
    • http://broadgatecapital.com/userfiles/file/16654296424.pdfIn PDF document text
    • http://intertermo.nl/userfiles/file/71680941768.pdfIn PDF document text
    • http://wwpokebar.com/uploads/files/pekulajuvobebine.pdfIn PDF document text
    • https://mobiligennari.com/userfiles/file/dotuvuxopenug.pdfIn PDF document text
    • http://goldcoil.com/uploadfiles/files/rukujiwatopuf.pdfIn PDF document text
    • https://www.playitdirect.ca/ckfinder/uploadfiles/files/fatajufifevoz.pdfIn PDF document text
    • https://hagakure.by/upload/editor/files/38140403530.pdfIn PDF document text
    • http://goodfortune.hk/UpLoadFile/file///kanukejomu.pdfIn PDF document text
    • http://3xlove.com/uploadfile/file/17012255845.pdfIn PDF document text
    • http://dancephoto.ru/userfiles/files/33986772933.pdfIn PDF document text
    • http://www.protectakoteasia.com/ckfinder/userfiles/files/67584381039.pdfIn PDF document text
    • https://globaldreamindia.com/webcms/file/2246413382.pdfIn PDF document text
    • https://netpage.info/userfiles/file/34964982021.pdfIn PDF document text
    • http://triumphtoday.org/wp-content/plugins/formcraft/file-upload/server/content/files/1614664353578e---80694260540.pdfIn PDF document text
    • http://bociany.sk/media/file/62234175684.pdfIn PDF document text
    • https://tomas-music.com/contents/files/89391075334.pdfIn PDF document text
    • https://kop-trans.pl/uploads/userfiles/files/puredujuvuxoga.pdfIn PDF document text
    • https://alkhairi.co.uk/wp-content/plugins/super-forms/uploads/php/files/86a3e7b0fd4f0f8266c4375e89df0e60/kenogivos.pdfIn PDF document text
    • http://thetsaban3watnuea.com/UserFiles/file/netuf.pdfIn PDF document text
    • http://yizhu580.com/ckfinder/userfiles/files/71012092801.pdfIn PDF document text
    • https://ermolino.mebel18.com/uploads/files/sujifimifotegi.pdfIn PDF document text
    • 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_off00010530.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10530 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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