Malicious PDF — malware analysis report

Static analysis result for SHA-256 92f7d2d72c8a74c6…

MALICIOUS

PDF

85.7 KB Created: 2021-07-16 21:43:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: b6d7c1638f53ccf662672431fc45b3fe SHA-1: 2c804b49b2a78c474010a3c8178d65d98a8015b2 SHA-256: 92f7d2d72c8a74c6b9199734503ea51129866bb3c638bd2c0250a66ecf55f2f1
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to compromised or disposable hosting domains, indicating a link farm designed to redirect users. The ClamAV detection and ML classifier strongly suggest malicious intent, likely phishing or malware distribution. Although no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with techniques used to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9970

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://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/c9a2f7485023b8e66c12a60426076141/44398776428.pdf In PDF document text
    • http://www.kymkarajok.net/tiedostot/files/82247791610.pdfIn PDF document text
    • http://vasilii-orlov.fun/wp-content/plugins/super-forms/uploads/php/files/a702048ad710b6299a0acfcde205af43/duxasuzelap.pdfIn PDF document text
    • https://larioenergy.net/uploads/file/gejezujulefovomilut.pdfIn PDF document text
    • http://schouteninterieurwerk.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16085c7268b5ea---suraturelowojogunutelizez.pdfIn PDF document text
    • http://ahxxzx.com/userfiles/202106/file/20965915071.pdfIn PDF document text
    • http://laboratoriodiprogettazione-ve.it/userfiles/files/girikafirat.pdfIn PDF document text
    • https://aadhaarretail.com/administrator/imagetemp/file/34989872595.pdfIn PDF document text
    • https://metroguards.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160f149207460f---59695653882.pdfIn PDF document text
    • http://www.abcklima.hu//data/editorfile/dojuniloro.pdfIn PDF document text
    • https://watfordfairtrade.org/app/webroot/img/files/girakuzuwolimesatupabo.pdfIn PDF document text
    • http://www.birapart.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609a9a47c4231---99891457494.pdfIn PDF document text
    • http://www.insurancedirectcanada.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160af837d182c5---poxutilikevitosul.pdfIn PDF document text
    • https://ludifrance.fr/userfiles/file/rabenafilapafatad.pdfIn PDF document text
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/c3cd3d733601e5204c119b8386b358cd/gufizijeba.pdfIn PDF document text
    • http://www.lugashotel.com/data/editorfile/vejijigu.pdfIn PDF document text
    • https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/ea8d642468a82d2d0fa6a5e5f37b3983/jetajaxoxoraxosaburum.pdfIn PDF document text
    • http://polipack.ru/content/file/22500558353.pdfIn PDF document text
    • http://magooferta.pl/uploads/fck/file/nurojerodekotadu.pdfIn PDF document text
    • https://maryamghiasi.com/images/upload/files/65102463995.pdfIn PDF document text
    • http://asremajazi.com/uploads/files/46346501896.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/FevRqgeaUVY/uplcv?utm_term=mathematical+modeling+problems+for+high+school+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_off0000ebb8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBB8 11200 bytes
SHA-256: 31ca8c9e68a87a74c27bd857825439b78e620e2004439e43a4e00cf8a3ebbcf6
font_01_sfnt_off00010546.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10546 16884 bytes
SHA-256: 8b079b1e9cee8ec794cf67e08b276e3b98eb66ca376e71f411855b4089fa9956
font_02_sfnt_off00013170.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13170 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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