Malicious PDF — malware analysis report

Static analysis result for SHA-256 1af0bfe127798db4…

MALICIOUS

PDF

63.7 KB Created: 2021-06-06 13:17:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6b9ae5b68a62d67ac050fad1b863059f SHA-1: f89c9e39c6cebb25302d40211bdd81750d6c4ac0 SHA-256: 1af0bfe127798db4b51752f4d8a9a20c5837be1ba2b26da1c0b03e7f493d5738
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF file is classified as malicious, exhibiting characteristics of a phishing lure. It contains a link farm pointing to compromised WordPress sites, likely intended to trick users into downloading further malicious content. The presence of multiple external URIs and a high ML score supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8602

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 https://smidgel.ru/uplcv?utm_term=bol+radha+bol+movie+full+hd+video+songs+download PDF link annotation
    • https://gradeagroup.com/wp-content/plugins/super-forms/uploads/php/files/o2hhdf8gugvqm1vcmqka7t4h5o/fewugasaxoroxoxeguk.pdfIn PDF document text
    • https://sasalidayanisma.org/uploads/file/tixijipamiwupil.pdfIn PDF document text
    • https://www.gsccn.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a60b9b274e1---nijewazupurafiwogodox.pdfIn PDF document text
    • http://ngor2-3.com/file_media/file_image/file/zutasezibobepukinobi.pdfIn PDF document text
    • http://fashioncenterpoint.com/wp-content/plugins/super-forms/uploads/php/files/dfe380a628859206455f6bd29ef0d706/lazekemoxosesatevu.pdfIn PDF document text
    • http://consulcongress.it/uploads/assets/file/65272563130.pdfIn PDF document text
    • http://rusiuojigalvoji.lt/wp-content/plugins/formcraft/file-upload/server/content/files/1606f8702576d9---nanupevujomu.pdfIn PDF document text
    • https://bokseinstituttet.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1608684c8de921---34055488845.pdfIn PDF document text
    • http://hellnocancershow.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609c8c1bd4215---limopuvujor.pdfIn PDF document text
    • http://c2mag.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ef6e7ddc48---19140016838.pdfIn PDF document text
    • http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16081971404320---sosezezu.pdfIn PDF document text
    • http://www.kmclogistics.com/wp-content/plugins/super-forms/uploads/php/files/c40956f8c12a6906e98b96a11d308f12/gejolejaveg.pdfIn PDF document text
    • http://amirafouad.com/uploaded_files/file/84785073241.pdfIn PDF document text
    • https://www.financedeclined.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16094555f5f0eb---rulalurejobigufigizetug.pdfIn PDF document text
    • http://www.sempresaude.net/wp-content/plugins/formcraft/file-upload/server/content/files/16099b4da02d70---93139965151.pdfIn PDF document text
    • https://amerismithenterprises.com/wp-content/plugins/super-forms/uploads/php/files/c4fbfb4cc7fdfb32aac5d6a086efc1ca/32791406435.pdfIn PDF document text
    • https://alianzatours.com/imagenes/file/kewakajemuze.pdfIn PDF document text
    • http://goref.ru/files/file/tuvesubibofipubis.pdfIn PDF document text
    • http://gingerwooddesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b3f6fe9fce1---83474656440.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e26d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE26D 5664 bytes
SHA-256: f7e85543d1565b03b9bf6376f9bcf59ebbf122741d702485f619cfd085211225

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