Malicious PDF — malware analysis report

Static analysis result for SHA-256 93178ee6fd64809d…

MALICIOUS

PDF

85.3 KB Created: 2021-07-27 02:24:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 87ac77ca6e2fccf620c30e4771ac8aba SHA-1: a355c7ee14ce00fc14f6d9c81ea08a5551965784 SHA-256: 93178ee6fd64809d6cb66312c4d83815d6e89bdf4bc806e14485915acc8c80ec
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links to compromised CMS uploads and disposable hosting, indicating a link farm designed to redirect users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. Although no scripts were explicitly extracted, the nature of the links and the PDF structure point towards an attempt to exploit users via external resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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 http://narnivet.com/userfiles/files/vodozewobititatolekewep.pdf In PDF document text
    • https://wentworthre.com/wp-content/plugins/super-forms/uploads/php/files/b1c4435e191292fcefc95e31800fe4ca/74627481396.pdfIn PDF document text
    • https://vaytieudungtragop.com.vn/wp-content/plugins/super-forms/uploads/php/files/ujrkv2lfvteggnqcn0g974m0rg/99105598006.pdfIn PDF document text
    • https://ballestermultiservicios.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e8b8a24ef0---tosoxolutufobaroler.pdfIn PDF document text
    • http://driver-jazda.pl/upload/file/topaxib.pdfIn PDF document text
    • http://ehsclassof64.com/clients/b/bf/bfa5c4411462ceee4a19e543862d902c/File/bumodelafaladubalapigav.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/bbm5kl5dse11jkanoefvqseu31/10311120232.pdfIn PDF document text
    • http://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ad2cd61156---numupimigeluxajeja.pdfIn PDF document text
    • https://www.unicodesystems.com/wp-content/plugins/super-forms/uploads/php/files/2q9hvdqbr0r92kvofst6g9ijp6/92755050350.pdfIn PDF document text
    • https://www.numberoneporthill.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16075f71967e18---mefifojurokanuj.pdfIn PDF document text
    • https://mttrasportisrl.it/dati/upload/file/pelizikumawunoxobo.pdfIn PDF document text
    • https://ambientltg.com/wp-content/plugins/super-forms/uploads/php/files/a2838dc84a169eedeb70c9dc8b70cd07/xumaxovo.pdfIn PDF document text
    • https://cplastik.cz/data/cms/file/nilusidifu.pdfIn PDF document text
    • http://www.northeastmarquees.com/wp-content/plugins/super-forms/uploads/php/files/bd3d0914f82851d5ee3851375cd584fb/kadepitodujovati.pdfIn PDF document text
    • http://mobilesamara.com/img/files/file/51064475127.pdfIn PDF document text
    • https://www.bluegreenshouseboats.in/wp-content/plugins/formcraft/file-upload/server/content/files/160b77e5a20716---kipoxitiwod.pdfIn PDF document text
    • https://franchiseharbor.com/files/files/gokexuresit.pdfIn PDF document text
    • http://akgikorea.com/file_upload/fck_upfile/file/44562350775.pdfIn PDF document text
    • http://marsalanoleggio.it/userfiles/files/lusujaviwewodavepol.pdfIn PDF document text
    • http://slenderclub.cz/ckfinder/userfiles/files/53291390667.pdfIn PDF document text
    • http://zulassung4you.de/bilder/file/fatilaxedawisiven.pdfIn PDF document text
    • http://hoacanh.net/luutru/files/93031852180.pdfIn PDF document text
    • https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/0qgs6cv2jmh5chfa3flddvftqk/zapotopivofobimi.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/fzgW7-mxBc0/uplcv?utm_term=what+is+the+habitat+of+a+toco+toucanPDF 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_off0000ebe0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBE0 16320 bytes
SHA-256: bc2278cea4e890e7bd0093ceae6f03fe36d4b73702aa9e719e7ee2927c8003ad
font_01_sfnt_off000115d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115D2 10520 bytes
SHA-256: 2f6c7aaffd93447b2aa5dbeac4b13280a51f3fa86e6381577e5bf4e07f4df87f
font_02_sfnt_off00012dcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DCB 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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