Malicious PDF — malware analysis report

Static analysis result for SHA-256 0782b9127647cdc1…

MALICIOUS

PDF

81.4 KB Created: 2021-09-01 18:36:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-05
MD5: a68ed2690d961cbea62f87dad6c65862 SHA-1: 1b7d34dd57f60f8e81869def8e803adedd8495ac SHA-256: 0782b9127647cdc1f1634e1cea90476aa5dc878f7582381427c395a4e51bcc5b
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many pointing to compromised WordPress sites, suggesting a phishing or malicious redirection scheme. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to lure users to malicious content or downloads. No scripts were extracted, but the structure and URL findings are sufficient to classify this as a malicious link farm.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/36a1f0c6d1e532becaeec516981c09e1/55088225801.pdf In PDF document text
    • http://topimmigrationlawyer.org/ckfinder/userfiles/files/91390667369.pdfIn PDF document text
    • http://albatrossmrn.com/konadnew/userfiles/file/jidugukik.pdfIn PDF document text
    • https://ontime-taxi.kg/wp-content/plugins/super-forms/uploads/php/files/bbea84a6cf2afa32dec886128b56b7eb/84879174794.pdfIn PDF document text
    • http://www.sarajevo-inn-grunewald.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f424f38aab---69159997711.pdfIn PDF document text
    • https://masterpieces-mallorca.com/wp-content/plugins/super-forms/uploads/php/files/76e1e1724cbaba9adcd43910369365e6/338519586.pdfIn PDF document text
    • http://vikingpaint.com/user_file/file/zakoxenalos.pdfIn PDF document text
    • http://hrt-foto.hu/_user/file/1150638597.pdfIn PDF document text
    • http://global-insurance-broker.de/downloads/bebesemotudesikejex.pdfIn PDF document text
    • http://www.ponderosafestival.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b591a761ec7---remavuwegogifuruxo.pdfIn PDF document text
    • http://jfac.kr/ckfinder/userfiles/files/96396956590.pdfIn PDF document text
    • http://z-i-f.ru/userfiles/file/tuvevukenefu.pdfIn PDF document text
    • https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/dc09cae7e93d1751e60dd159a0a98492/fujululalobam.pdfIn PDF document text
    • https://ardiinerkh.mn/uploads/userfiles/files/96761306564.pdfIn PDF document text
    • http://herve-coiffure.ci/files/jupepuzapijozokipukanegig.pdfIn PDF document text
    • https://aldapa.eus/files/galeria/files/76031879038.pdfIn PDF document text
    • http://giustizianuova.it/userfiles/file/vugekajugas.pdfIn PDF document text
    • http://kjphotocon.org/data/userfiles/files/tutotop.pdfIn PDF document text
    • https://cakesandcupcakes.net/userfiles/files/wowasekonaropigonizoju.pdfIn PDF document text
    • https://amalighting.com/wp-content/plugins/super-forms/uploads/php/files/c8db451860cb9091c211fdd025595fb6/64666752636.pdfIn PDF document text
    • http://dyglas.com/userData/board/file/58530869606.pdfIn PDF document text
    • http://studioarchterreni.it/userfiles/files/61804677957.pdfIn PDF document text
    • https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/161071db831b3d---luxupipusaxa.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=contrast+paragraph+examplesPDF 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_off0000d917.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD917 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f12e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF12E 10740 bytes
SHA-256: 0f1bdb138b36d31a483bea70d553b37fffb87cf1dd4f358344b4b94794a35dec
font_02_sfnt_off000109c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x109C2 17960 bytes
SHA-256: e04ab7ff521676f38c0f328cb8632416bc75135d7be8bf3f49d5529c724ff8de

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