Malicious PDF — malware analysis report

Static analysis result for SHA-256 0e8d6a123685daa4…

MALICIOUS

PDF

73.1 KB Created: 2021-08-16 17:05:00 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: 7366b1ec8432ec9afc8bae342f01f630 SHA-1: 44b5f45b63138db71ab1321719dd10ddead080e0 SHA-256: 0e8d6a123685daa4c09a08568449e81312dfd5ef9340f427297c86e2aa952369
156 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. It contains numerous links, many pointing to compromised CMS upload directories or disposable hosting, suggesting it functions as a link farm. The primary goal appears to be directing users to potentially malicious external websites, likely for phishing or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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 https://englewoodgrassfarm.com/wp-content/plugins/super-forms/uploads/php/files/fd7e2e3cafea653d3ec2cb1c61b9d304/waboxu.pdf In PDF document text
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160d6086e68c06---43131187708.pdfIn PDF document text
    • https://ohcsi.com/ckfinder/userfiles/files/13962026711.pdfIn PDF document text
    • http://ziconiavip.com/uploadfck/file/wodosutesonugakufewi.pdfIn PDF document text
    • https://airxps.com/userfiles/files/xivenatiganox.pdfIn PDF document text
    • http://yasairamenbar.com/uploads/files/68039463304.pdfIn PDF document text
    • https://flylights.pl/wp-content/plugins/super-forms/uploads/php/files/d4ref7t702lvvtb3aqr1d8t2a7/36652141600.pdfIn PDF document text
    • https://www.birdandwildlifeteam.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a6265b4361---91279854567.pdfIn PDF document text
    • https://nothingbutsafetyglasses.com/userfiles/file/77327895344.pdfIn PDF document text
    • http://cricalliance.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a3d3f76c32---11312521227.pdfIn PDF document text
    • http://amandatravel.com/userfiles/file/girenizefaxozizimarezediz.pdfIn PDF document text
    • http://altaprecision.com/userfiles/file/pifafefukemobu.pdfIn PDF document text
    • http://arcos-eff.it/userfiles/files/kekowurotufu.pdfIn PDF document text
    • https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/27hkoqbdbkeq4thakhnj8152d3/zoluweritupute.pdfIn PDF document text
    • https://stef-nancy.fr/upload/document/65714698944.pdfIn PDF document text
    • http://www.iuoelocal870.com/kaizen/ckfinder/userfiles/files/12978331840.pdfIn PDF document text
    • https://bleikss.com/userfiles/file/3547579451.pdfIn PDF document text
    • http://semihkerpiccilervesupersound.com/upload/file/lejagof.pdfIn PDF document text
    • http://evabody.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160781a540cee0---fugojalisekuwomuwedate.pdfIn PDF document text
    • http://www.realisthotel.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b4a581bccdf---45360174883.pdfIn PDF document text
    • http://dytac.hk/userfiles/fekoredigirajo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=harrison+bergeron+questions+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_off0000bfa5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFA5 11004 bytes
SHA-256: f8f65a865aa36b0aed7d931f733067b701ce91da4657eb70bb17f7dfc5b84e1a
font_01_sfnt_off0000d898.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD898 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000f0aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0AA 15208 bytes
SHA-256: 18d3f4b916cd5bb0771c9181df97a9842d8f5278d5f78fa3107074b7a118d9a5

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