Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d67b627d9c4e6e5…

MALICIOUS

PDF

73.6 KB Created: 2021-09-05 06:57:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: f69ecca23bfe396052bb2e97820b90e5 SHA-1: e862e7b353e186fab2d66cb6d9a8118fea9142bf SHA-256: 0d67b627d9c4e6e5ffcd1f2c9b4de8785636a7a5e4605fa88062d8a311dedb1b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to external websites, many hosted on compromised WordPress sites, suggesting a link farm or phishing lure. The ClamAV detection and ML classifier strongly indicate malicious intent, likely for distributing further malware or conducting phishing. Although no scripts were explicitly extracted, the PDF structure and embedded URLs are indicative of malicious activity.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9885

Heuristics 6

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://synerhu.ru/uplcv?utm_term=kenmore+refrigerator+manual+model+106 PDF link annotation
    • http://pck.malopolska.pl/wp-content/plugins/super-forms/uploads/php/files/054a8ba36e5e6d9f41c6e73a99d65db8/sewejivuv.pdfIn PDF document text
    • http://bbpcosmetics.com/admin/upFiles/2021-6/file/natuxe.pdfIn PDF document text
    • http://kanchanaspa.com/ckfinder/userfiles/files/87339171071.pdfIn PDF document text
    • http://metamorfoza-krosno.pl/userfiles/file/63523664532.pdfIn PDF document text
    • http://ventmetal.ru/userfiles/files/wutumefenumomebebisago.pdfIn PDF document text
    • https://buddingheights.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607f2f2e034e4---20478385043.pdfIn PDF document text
    • http://zabradli-znerezu.cz/userfiles/file/29975006646.pdfIn PDF document text
    • http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/16082ec75c9b81---zejumixuza.pdfIn PDF document text
    • https://www.partyshuttlebus.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16080384581b7f---vilamolegig.pdfIn PDF document text
    • https://cualuoihoanmy.com/uploads/userfiles/file/24962455064.pdfIn PDF document text
    • https://neavocats.com/wp-content/plugins/super-forms/uploads/php/files/92292df3788a6d1c03da4e3d865b104e/63913396270.pdfIn PDF document text
    • http://sh8ke.com/wp-content/plugins/formcraft/file-upload/server/content/files/16099b757c7e66---zabofupurovit.pdfIn PDF document text
    • http://hiddenroots.org/clients/19739/File/toruveraf.pdfIn PDF document text
    • http://www.driftime.ee/wp-content/plugins/formcraft/file-upload/server/content/files/160c61cd2865a0---50969989593.pdfIn PDF document text
    • http://www.playerclub.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160bf03388745e---tusepenemowabenela.pdfIn PDF document text
    • http://baharemadinah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607064d021bbc---mofuwatalujewimenadir.pdfIn PDF document text
    • http://cn-daomeng.com/upload/userfiles/files/dc919d7deb75b910dd658d062683ad41.pdfIn PDF document text
    • https://www.andyselfstorage.co.uk/wp-content/plugins/super-forms/uploads/php/files/o35ffmu9j20cc3dq881bhighpj/tobuvemenajomeg.pdfIn PDF document text
    • http://objetivovender.com/wp-content/plugins/formcraft/file-upload/server/content/files/160aecfd88746a---75197736035.pdfIn PDF document text
    • https://izharfoster.com/wp-content/plugins/formcraft/file-upload/server/content/files/16090786808daa---kolavojikatenex.pdfIn PDF document text
    • http://www.forteks.com.br/admin/ckeditor/ckfinder/userfiles/Images/39042796247.pdfIn PDF document text
    • http://businessplan-capalpha.fr/mbp/upload/images/images/upload/ckfinder/13817643462.pdfIn PDF document text
    • http://truthtube.com/UserFiles/file/9845061451.pdfIn PDF document text
    • https://ortechindustries.ca/ci/userfiles/files/temitizidokiri.pdfIn PDF document text
    • http://cephedanismani.com/images/pages/file/vuzekiwirelede.pdfIn PDF document text
    • http://reanda.com/jingkelun/userfiles/files/20210723005157.pdfIn PDF document text
    • http://amphorabeautyclub.com/campannas/file/tororurama.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000be87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBE87 15864 bytes
SHA-256: a3908db4590f6d28d988849faba0c3ab9db043aaabb8d345bcbcbd6b6c171876
font_01_sfnt_off0000e722.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE722 10960 bytes
SHA-256: 2a989768b33395ba9dda0a6ea923aaa9193816a29c7c613edbec67a9995454e5
font_02_sfnt_off00010062.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10062 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

Open this report in the interactive analyzer, or submit your own file for analysis.