Malicious PDF — malware analysis report

Static analysis result for SHA-256 02a89dec7c3fb815…

MALICIOUS

PDF

42.4 KB Created: 2021-06-28 23:47:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-25
MD5: 8ca6a12605e22da505bc33d5b7e28c1b SHA-1: 08925dd15f4e57c6f7599ae34c226cdb58d112d5 SHA-256: 02a89dec7c3fb8157c62bf2ede2f720d6db4babc5f2f832142a94c397d3c566d
174 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, many hosted on compromised CMS upload directories and uses an image-based lure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7092

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 42 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • 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 https://philabc.ru/uplcv?utm_term=cooking+top+sirloin PDF link annotation
    • http://aaaexpressheating.com/userfiles/file/zepuguwesaxegoposop.pdfIn PDF document text
    • http://zawayakw.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3112e601d7---52627799837.pdfIn PDF document text
    • https://mattress-leader.com/media/damulinotelonesoworef.pdfIn PDF document text
    • http://palyavalaszto.hu/teszt/upload/file/jepazeroferi.pdfIn PDF document text
    • http://www.sunarozlem.com.tr/wp-content/plugins/super-forms/uploads/php/files/90anqh6bug5rpb49bbm1oqe7n3/rurexaxosuzi.pdfIn PDF document text
    • https://centrobrands.com/wp-content/plugins/super-forms/uploads/php/files/a5473106370219dd54e4a997432b47a3/roreduderira.pdfIn PDF document text
    • http://www.leesii.com/wp-content/plugins/formcraft/file-upload/server/content/files/160826f3d65110---nojapegetekemezutuzufab.pdfIn PDF document text
    • https://performanshost.com/calisma2/files/uploads/xexatejufopudiwenudopo.pdfIn PDF document text
    • http://dmhu.eu/uploads/uplib/file/fawuz.pdfIn PDF document text
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160cbd5410e014---ruvuwubujatifufi.pdfIn PDF document text
    • https://www.audifonosdoshoydos.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bb3923868ce---kiriregedikogumefiwa.pdfIn PDF document text
    • http://abwingsbuffalo.com/uploads/files/zisorolarulozesuzoxu.pdfIn PDF document text
    • http://ithaca1962.com/clients/41687/File/jisuvavabojazomigutujuzo.pdfIn PDF document text
    • https://arizonalightingsales.com/wp-content/plugins/super-forms/uploads/php/files/119652c5f7a32ad661ede4073bf92b38/tabije.pdfIn PDF document text
    • http://ruoumoc.com/upload/files/75365472347.pdfIn PDF document text
    • https://webmodels.studio/wp-content/plugins/formcraft/file-upload/server/content/files/160706fbab75f3---85235794191.pdfIn PDF document text
    • http://www.ashtralmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/160809164a8c5b---dageso.pdfIn PDF document text
    • http://www.k-24.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cb91f93f37f---dovos.pdfIn PDF document text
    • http://www.morrisjones.co.uk/EditorImages/file/83326747032.pdfIn PDF document text
    • https://gmonlinestore.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607cdebb7eba3---42977229825.pdfIn PDF document text
    • https://trsbarriersdirect.com/wp-content/plugins/super-forms/uploads/php/files/cvs4e4smq88pa52ln23au5o0kj/81593932616.pdfIn PDF document text
    • http://www.hussco-steel.com/husscofiles/files/10040903986.pdfIn PDF document text
    • https://takiminsahada.com/wp-content/plugins/super-forms/uploads/php/files/j96fk9m4dhvi5trnf1fg3sd1k0/raderujuzunij.pdfIn PDF document text
    • https://allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/d96bf96b5d2c4f88dea35ea358ee890c/pafafumawakozumatalivivis.pdfIn PDF document text

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