Malicious PDF — malware analysis report

Static analysis result for SHA-256 9d2c0d00be930ddf…

MALICIOUS

PDF

87.8 KB Created: 2021-08-25 03:27:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 293e2bb4d37ab41049b7701599ac356a SHA-1: 6895d17daccecd53ee4b6c51486f6cbac37ad0ce SHA-256: 9d2c0d00be930ddf1d19ed985307e32a6018da88f9b0f1fb28ef575b49f45998
156 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to compromised WordPress sites and disposable hosting, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware distribution. No scripts were extracted, but the structure and URL patterns are indicative of a malicious PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9987

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
  • 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 http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1606f1282f1198---gepunamifam.pdf In PDF document text
    • https://taperagi.com/contents//files/xenekikexotum.pdfIn PDF document text
    • https://pasarantogel2.com/contents//files/vijijo.pdfIn PDF document text
    • http://amphorabeautyclub.com/campannas/file/tikatijifeze.pdfIn PDF document text
    • http://alburigiott.it/userfiles/files/bubudimujolida.pdfIn PDF document text
    • http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ae0a14be86---walozasi.pdfIn PDF document text
    • http://amy-tsai.com/images_express/userfiles/files/76896628542.pdfIn PDF document text
    • http://thanuyentea.com/ckfinder/userfiles/files/joxipigomufotiseposeniwif.pdfIn PDF document text
    • http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/16093f57a88f4c---zegogitujolusuros.pdfIn PDF document text
    • http://xn--80akij1ajew.xn--p1ai/wp-content/plugins/formcraft/file-upload/server/content/files/160d45a6903f50---kegadekomu.pdfIn PDF document text
    • http://herborgthailand.com/file_media/file_image/file/muzivazuborasifevugoki.pdfIn PDF document text
    • http://clear-es.net/yamituki-n/uploads/files/todizitegogefagir.pdfIn PDF document text
    • http://vodnik48.ru/content/file/7202971243.pdfIn PDF document text
    • http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/e29aae020f3e6648473b32e312e20b92/89555152684.pdfIn PDF document text
    • https://gruntbudowa.pl/files/file/89305726750.pdfIn PDF document text
    • http://mooneyes.pl/userfiles/file/31005584898.pdfIn PDF document text
    • https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/0bd1d68901d77c0e29a998db2bbaa3c9/62603510014.pdfIn PDF document text
    • http://dotacjedlaoze.pl/userfiles/file/18314715973.pdfIn PDF document text
    • http://fitviewer.de/files/file/34588872849.pdfIn PDF document text
    • http://cayxaotamphan.net/userfiles/image/file/98103291498.pdfIn PDF document text
    • http://photographybynami.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608ced2c71cee---bagogosazaxon.pdfIn PDF document text
    • http://ebslang.net/_UploadFile/Images/file/28979620627.pdfIn PDF document text
    • http://studioingtassinari.eu/userfiles/files/50813759317.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/zMnd8XtcwSM/uplcv?utm_term=yoga+for+reproductive+organs+male+pdfPDF link annotation
    • 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_off0000f22a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF22A 17228 bytes
SHA-256: 8aae8877333259ed202c6d71b1dd4949a8f063dad2e324b23292b8b740875952
font_01_sfnt_off00011f25.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F25 11112 bytes
SHA-256: 68932d57139469275aa364b984625a2b468919661e59f89ef04f4346c8fc4495
font_02_sfnt_off000138dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x138DD 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1