Malicious PDF — malware analysis report

Static analysis result for SHA-256 84f47eae57de28a2…

MALICIOUS

PDF

73.5 KB Created: 2021-09-05 15:52:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: dc4dc01b10ddb1cdb25961e3798b1eb3 SHA-1: 995361f3ad5ff2220cee8ecee943544d90f77fdd SHA-256: 84f47eae57de28a220a882f5850ef8748885d0b977143e4227d168c6de880c8a
154 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ClamAV and an ML classifier. It contains numerous links, many pointing to compromised WordPress sites and disposable hosting, indicating a link farm designed to redirect users. The presence of these links suggests an attempt to distribute malicious content or conduct phishing operations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7568

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
  • 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://yhbinternational.com/userfiles/file/47699226640.pdf In PDF document text
    • http://termocity.by/pics/files/kozabeges.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610dced69ea52---52664631071.pdfIn PDF document text
    • http://mmsmarin.com/imgimage/file/nemudukixobo.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16071c381efe01---15149328286.pdfIn PDF document text
    • http://hyperasp.net/userfiles/file/35965466301.pdfIn PDF document text
    • https://sellerflows.com/wp-content/plugins/super-forms/uploads/php/files/5794b6a91df4f8e1585ce3938610b7da/35243892116.pdfIn PDF document text
    • https://traiteur-troyes-mariage-buffet-aube-10.blaisot-traiteur.fr/ckfinder/userfiles/files/wisabifuza.pdfIn PDF document text
    • http://freemansphotography.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b981bbb4f05---xazematuwisimifapuwe.pdfIn PDF document text
    • http://alemotta.com/resources/original/file/gezokasajipurudaxalefi.pdfIn PDF document text
    • http://marcth.pl/media/fck/file/86501465181.pdfIn PDF document text
    • https://costabravas.com/uploads/localidades/files/foketina.pdfIn PDF document text
    • https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/06f861e512ad01bda9ae883fdd671af0/4790349147.pdfIn PDF document text
    • http://mitcostruttori.it/userfiles/files/5829780627.pdfIn PDF document text
    • http://aitrans.cn/UploadFile/file/F1202108110730097476.pdfIn PDF document text
    • http://bogaarchitetti.it/userfiles/files/44349151051.pdfIn PDF document text
    • https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/8ffe1fccbac3f691134975b1adadb725/kenatatetu.pdfIn PDF document text
    • http://www.infranetltd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612fa89921c4a---17667653088.pdfIn PDF document text
    • http://brmhn.com/userfiles/file/20210629140403_77lhmx.pdfIn PDF document text
    • https://advancedbusiness.co/wp-content/plugins/super-forms/uploads/php/files/ec3070f131d2cc72a9dbd0eef96e386b/64305274819.pdfIn PDF document text
    • http://amongelite.com/ci/userfiles/files/78772321624.pdfIn PDF document text
    • http://svenstavik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adeb6c5a993---11701617533.pdfIn PDF document text
    • http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/160b325b1d3639---24856638345.pdfIn PDF document text
    • http://kavernoklub.com/campannas/file/lovodigamanawulopiji.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=south+african+k53+learners+test+papers+pdfPDF 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_off0000fada.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFADA 11288 bytes
SHA-256: 72fc96b6f5ff0fc8b4f511eda6049a39170d326a7d54b11f8999e3fefdacac00

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