Malicious PDF — malware analysis report

Static analysis result for SHA-256 a6884130f9651dcd…

MALICIOUS

PDF

70.7 KB Created: 2021-09-15 19:45:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 4b6fb88753b6a5da3a63e5c15e295ca2 SHA-1: f1d9c65b879a794089a9cd45156005b0a4acb8f0 SHA-256: a6884130f9651dcdf514974fa379fd37722183c2d964e7ce8916372f13ad09b0
154 Risk Score

Malware Insights

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

The PDF file was identified as malicious by ML classifiers and ClamAV, indicating a phishing or trojan threat. It contains numerous embedded URLs, many pointing to compromised CMS upload directories or disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of these links and the overall structure strongly indicate an attempt to distribute malware or conduct phishing attacks.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7495

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://magic-ray.shop/uploads/files/tibedu.pdf In PDF document text
    • http://www.alexgis.com/siteuploads/editorimg/file/rofuxixo.pdfIn PDF document text
    • https://festivalecolo.ca/wp-content/plugins/formcraft/file-upload/server/content/files/161311297725c2---59918834242.pdfIn PDF document text
    • http://5thaveseniors.org/userfiles/file/jewukitaduf.pdfIn PDF document text
    • https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/bd4e0878cf1a33e4d78f50b2fe6c2588/xiwugalafadowa.pdfIn PDF document text
    • http://xn--brneneskontor-landsforening-b0c.dk/userfiles/file/gixatiselo.pdfIn PDF document text
    • https://selispin.com/calisma2/files/uploads/nakarakiwo.pdfIn PDF document text
    • http://www.dkmodels.net/ckfinder/userfiles/files/35845373930.pdfIn PDF document text
    • https://sketchup360.vn/wp-content/plugins/super-forms/uploads/php/files/a2d1bqqoeh2bufdqdm9d1ao15v/zizoxilidi.pdfIn PDF document text
    • https://www.techsrollout.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c427f4df08---votakozopavatib.pdfIn PDF document text
    • https://gs-hemeringen.de/ablage/userfiles/files/96257628445.pdfIn PDF document text
    • https://tivicom.vn/upload/files/40870413293.pdfIn PDF document text
    • https://juhaszautovill.hu/userfiles/file/ridunalawokemedadakuku.pdfIn PDF document text
    • http://cleannshieldflorida.com/wp-content/plugins/super-forms/uploads/php/files/6addafe22ce795450f45af8f78a949f6/xupozuraguwexulebola.pdfIn PDF document text
    • https://elitestrategyglobal.com/wp-content/plugins/super-forms/uploads/php/files/dc528254db84d9acd992374d3e7747ea/livizofezuzives.pdfIn PDF document text
    • https://mbzgogo.xyz/web/img/podborky/files/10921333086.pdfIn PDF document text
    • https://inverpalmas.com/aym_image/files/65653882991.pdfIn PDF document text
    • http://worshipedia.net/sites/default/files/file/66327447751.pdfIn PDF document text
    • http://thegioimercedes.com/upload/files/98408110298.pdfIn PDF document text
    • http://oishisushigd.com/uploads/files/kosivoguz.pdfIn PDF document text
    • http://zadonskiy.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1613de50fbfda7---79592366732.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=harry+potter+and+the+order+of+the+phoenix+gomoviesPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cef1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCEF1 17296 bytes
SHA-256: 4704a4afff0337356ec9e3bf5614a00346a47a174b4bfb778660e7cdf095d8a1
font_01_sfnt_off0000fb1f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFB1F 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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