Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3208b15b2bf3e3e…

MALICIOUS

PDF

58.6 KB Created: 2021-09-08 19:31:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-02
MD5: 936d4a91ccc049686a1f963bf85d7fc6 SHA-1: 1d5fe0416185dad97a0cfec4f2b7b0395dab955d SHA-256: c3208b15b2bf3e3e359074233a6e6f1cd697b272761b602fa3e9d1e18d2022bc
132 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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 and contains embedded JavaScript. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5046

Heuristics 5

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://huntic.ru/uplcv?utm_term=resume+sample+for+job+application+pdf+philippines PDF link annotation
    • https://tuabogadoangel.com/wp-content/plugins/super-forms/uploads/php/files/ac421ff0a74b19f3c25e4bc4491c9385/bijutowelas.pdfIn PDF document text
    • https://aiwcecckolkata.org/FCKeditor/file/wojokokubow.pdfIn PDF document text
    • http://bordahusfeldolgozo.hu/editor_up/51974324638.pdfIn PDF document text
    • http://gold-carsales.com/js/upload/files/mokebagefudevowawikevepaw.pdfIn PDF document text
    • http://waxiangyuan.com/upload_fck/file/2021-9-8/20210908000806860375.pdfIn PDF document text
    • http://brucemayrockinstitute.com/assets/ckfinder/core/connector/php/uploads/files/95145290834.pdfIn PDF document text
    • http://apsons.eu/files/file/54749648758.pdfIn PDF document text
    • http://xn--9i1b14lwsg1seumdzsx.com/upload/fckeditor/file/wunuroteteniwexaz.pdfIn PDF document text
    • https://www.tocbirsen.org.tr/ckfinder/userfiles/files/49320629446.pdfIn PDF document text
    • http://stl-hk.net/userfiles/96305136396.pdfIn PDF document text
    • http://dush-kz.ru/uploads/fck/file/fipomidomijufa.pdfIn PDF document text
    • http://goksirlambinowice.pl/img/upload/files/zoxigalakebetenas.pdfIn PDF document text
    • http://hublihorse.com/uploads/userfiles/files/perulepojirafaroburavem.pdfIn PDF document text
    • http://tw-tms.com/uploadpic/xw/files/60990516291.pdfIn PDF document text
    • http://doubler-son-capital.com/photos/files/58541126374.pdfIn PDF document text
    • http://good163.cn/Uploadfiles/files/fepuze.pdfIn PDF document text
    • http://parentini.it/userfiles/files/kamelixujoxepotavukavafu.pdfIn PDF document text
    • https://sakura-bashi.com/uploads/files/202109041748362012.pdfIn PDF document text
    • http://ingpiazza.eu/userfiles/files/fupolitezagi.pdfIn PDF document text
    • http://otestmanager.com/club/data/userfiles/file/20210908071319.pdfIn PDF document text
    • https://pakistanchristiancongress.org/userfiles/file/rekidifiz.pdfIn PDF document text
    • https://edu-mate.kr/_UploadFile/Images/file/gojajumavinikalipezijut.pdfIn PDF document text
    • http://discarga.com/wp-content/plugins/formcraft/file-upload/server/content/files/161358a6b46924---95020395870.pdfIn PDF document text
    • http://aytekinpolatel.com/image/files/33787266253.pdfIn PDF document text