Malicious PDF — malware analysis report

Static analysis result for SHA-256 edaada1861c3d8f7…

MALICIOUS

PDF

88.3 KB Created: 2021-09-19 15:07:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: 0cfbd2c7629e07a3ebe05bc6171ec70d SHA-1: 7225abe25e9aeb2295bbb630f9827b3d691ae0ee SHA-256: edaada1861c3d8f7f26860edab3ad1629636fe371c6f8225190b3f10f9b26e69
164 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier as malicious. It contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS uploads or disposable hosting, indicating a link farm designed to redirect users to malicious content. The embedded JavaScript likely facilitates the redirection or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9835

Heuristics 7

  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://renovfab-menuiserie.com/userfiles/file/49122916908.pdf In PDF document text
    • http://novena99.com/uploads/files/202109062145238349.pdfIn PDF document text
    • https://tepihtrava.rs/files/31045395272.pdfIn PDF document text
    • http://bharatandcompany.in/ckfinder/userfiles/files/gulopixabelamegix.pdfIn PDF document text
    • http://website-design-company.in/dev3/damodar/ckfinder/core/connector/php/userfiles/files/mifabod.pdfIn PDF document text
    • http://www.louthadventures.ie/wp-content/plugins/formcraft/file-upload/server/content/files/1612edbf663994---66920026619.pdfIn PDF document text
    • https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/54731c4b6e90ede14957fe684c8dd710/43596830588.pdfIn PDF document text
    • http://carscaso.com/js/upload/files/kozotexesiwimagoxigad.pdfIn PDF document text
    • http://www.rosabrockenhaus.ch/ckfinder/userfiles/files/95750508654.pdfIn PDF document text
    • http://opuspoint.com/ckfinder/userfiles/files/suregonifoputoziwozo.pdfIn PDF document text
    • http://jtravel.clickis.kr/FileData/ckfinder/files/20210916_596099D0C93D0927.pdfIn PDF document text
    • https://anakaygame.net/calisma2/files/uploads/81676985596.pdfIn PDF document text
    • http://a-swiss.com/upload/userfiles/file/noxawejifamuwijuwoganal.pdfIn PDF document text
    • https://amagi.la/wp-content/plugins/formcraft/file-upload/server/content/files/1613fe876a6263---kosafada.pdfIn PDF document text
    • https://getadoc.in/ckfinder/userfiles/files/62841680888.pdfIn PDF document text
    • http://terapie-psi.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16132d7b7462ca---63862396948.pdfIn PDF document text
    • http://coming-c.com/userfiles/file/25970034469.pdfIn PDF document text
    • https://www.vek-bg.com/app/templates/js/ckfinder/userfiles/files/mipemogujedipanejuvobi.pdfIn PDF document text
    • http://effekt-film.de/files/file/pupog.pdfIn PDF document text
    • http://www.gobarging.com/uploads/textareas/file/32778944408.pdfIn PDF document text
    • http://sahrugs.com/userfiles/file/konezenuvewofepabej.pdfIn PDF document text
    • https://bkairconditioner.cloud4demo.com/uploads/files/7123224686.pdfIn PDF document text
    • http://ibconsulting.it/userfiles/files/48840735228.pdfIn PDF document text
    • http://around-sicily.net/userfiles/file/79816115320.pdfIn PDF document text
    • https://dispomydeal.com/wp-content/plugins/super-forms/uploads/php/files/97f58a4a8ea1475f3ad6f2300ce356dd/19719200200.pdfIn PDF document text
    • https://generalaudit.pl/eurostyl/photos/file/31562701649.pdfIn PDF document text
    • http://autosklo.sk/pictures/file/96520349543.pdfIn PDF document text
    • http://doubles301.jp/files/ckeditor/files/buxuwigupavozefite.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=shakuntala+devi+full+moviePDF 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_off0000f313.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF313 10684 bytes
SHA-256: 43cfcda9cdff84e910257113d23bf45fea41e1068c0942e0aa7a5f85ffc9913b
font_01_sfnt_off00010b65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10B65 18552 bytes
SHA-256: a277e15863babf9cd6d0f0f960e65c61c579f01cf641987ea5b5ab016f478688
font_02_sfnt_off00013bc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13BC4 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1