Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d0e1a7033c97998…

MALICIOUS

PDF

63.7 KB Created: 2021-09-03 21:07:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-22
MD5: a9c18b45d2631fb96dc893dac3b6ea61 SHA-1: 643599ac17e50aa6d43c5a4042baa7340dfb8d49 SHA-256: 0d0e1a7033c97998db994a182e07331209d7d423a98437e75c82f2def226cd17
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, indicating a phishing or malware distribution intent. It functions as a link farm, with numerous embedded URLs pointing to compromised WordPress sites, likely serving as landing pages for malicious content. The presence of multiple distinct hosts and the use of UTM parameters suggest a coordinated effort to redirect users to potentially harmful destinations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7270

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ketchas.ru/uplcv?utm_term=manual+transmission+remote+start PDF link annotation
    • http://irmascaritasdejesus.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/160756341e13fb---mixilinewuredagovoj.pdfIn PDF document text
    • https://www.rath-catering.de/wp-content/plugins/formcraft/file-upload/server/content/files/1606cd3b51ba9a---11696223795.pdfIn PDF document text
    • http://taikenplan.jp/ckfinder/userfiles/files/884648105.pdfIn PDF document text
    • http://www.loockuniformes.com.br/home/wp-content/plugins/formcraft/file-upload/server/content/files/160a231de3012d---bivakowuje.pdfIn PDF document text
    • https://jahanchart.ir/data/files/file/lokodosuvap.pdfIn PDF document text
    • http://humanitool.ru/userfiles/file/satosanukamiwusudo.pdfIn PDF document text
    • http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/4hkm3u8aih5rblloutakvtuj67/nabidez.pdfIn PDF document text
    • https://huaienclinic.com/uploadpic/files/vapojurunupitefefameji.pdfIn PDF document text
    • http://manninareunion2012.com/clients/0/03/03b30fdf9aaeeba733afadbef254ff7b/File/sipugipetipukezesuk.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/0f5d1327e4c5373c2d2a6622c88ee6ba/xasenilumusaxujoz.pdfIn PDF document text
    • http://fondationmonetoile.org/clients/0/0e/0ecfe6182781ff486fe5156d2e85c11d/File/21718568750.pdfIn PDF document text
    • https://cvsc.co/userfiles/file/7623657286.pdfIn PDF document text
    • http://korealabels.com/ckfinder/userfiles/files/jaxadem.pdfIn PDF document text
    • http://qataminational.com/uploaded_files/userfiles/files/muzikigasinetojetumobotur.pdfIn PDF document text
    • http://allegroescrow.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ccbec380519---87482810906.pdfIn PDF document text
    • http://parkwestresidences.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3eb6fb9d95---4343459818.pdfIn PDF document text
    • http://lifestyleufa.ru/wp-content/plugins/super-forms/uploads/php/files/69e752c4572180e570b43ace0e0bcdd2/sufuwo.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a6244ae4f17---gevizimasojewowa.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/161031fb871135---vurozawazuwebosifup.pdfIn PDF document text
    • https://phuquiland.com/upload/files/85531138674.pdfIn PDF document text
    • https://dm288.com/slicice/file/balipudutadusekanox.pdfIn PDF document text
    • http://zaintik.org/files/galeria/files/wovovazonak.pdfIn PDF document text
    • https://alianzatours.com/imagenes/file/15464349333.pdfIn PDF document text
    • https://alajuusa.ee/media/contents/file/86564330513.pdfIn PDF document text
    • https://www.projectorrentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/16121669adac20---retufexupikarinik.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_off0000debf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEBF 10364 bytes
SHA-256: 93cae5f1b9f438b78b5e7dbdb9f33496707077a02d6f0d38e81b42d165c51c17