Malicious PDF — malware analysis report

Static analysis result for SHA-256 945a47c4ecfe79ee…

MALICIOUS

PDF

84.4 KB Created: 2021-10-11 23:44:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: 9b4abf8a08230fe76c6fa7a9248d9d10 SHA-1: 4a2ab7a98f5172bc5786b17880928e60f11e47ba SHA-256: 945a47c4ecfe79ee1dd897330f03c1940da419611b1a30a36a0f71d4ee4c0cc5
156 Risk Score

Malware Insights

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

The PDF file contains numerous links, many of which point to compromised CMS uploads or disposable hosting domains, indicating a link farm designed to lead users to malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution via these links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://canoto.us/Images_upload/files/takelajedabemiguponumok.pdf In PDF document text
    • https://nieruchomosciturystyczne.eu/files/file/gunofivi.pdfIn PDF document text
    • https://nuevocoach.co.uk/wp-content/plugins/super-forms/uploads/php/files/bb6dbe0e0706a1d0a06be71f9e5832bb/lulokajet.pdfIn PDF document text
    • http://prograsifkalip.com/files/lijuzawavuvo.pdfIn PDF document text
    • http://www.trackls.com/application/ckeditor/ckfinder/userfiles/files/fewamifabejagasupe.pdfIn PDF document text
    • https://inprovitparaguay.com/ckfinder/userfiles/files/kabilazerujo.pdfIn PDF document text
    • https://sg-design.top/wp-content/plugins/super-forms/uploads/php/files/2107ca9effb1d3bb757d9fbacf2ebd86/xaxowifapevomaforen.pdfIn PDF document text
    • http://xn----7sbjvweekof5d.xn--p1ai/files/files/nuvegegupitapuk.pdfIn PDF document text
    • https://albertscience.com/ckfinder/userfiles/files/rolenewulirowar.pdfIn PDF document text
    • https://konzolstudio.ro/uploaded_files/file/ragenozimolawupugab.pdfIn PDF document text
    • http://whatcanidoforyou.eu/publish/file/voxefuket.pdfIn PDF document text
    • https://hotelite.in/userfiles/file/61691475718.pdfIn PDF document text
    • https://diagoldjewels.com/userfiles/file/ravigebix.pdfIn PDF document text
    • https://vas-vill.hu/userfiles/file/14918480054.pdfIn PDF document text
    • http://logistra.fr/ressource/site-image/files/larak.pdfIn PDF document text
    • https://www.saltriot.com/wp-content/plugins/super-forms/uploads/php/files/bb8f468eb1e0c1350eac630aa31f1924/55299972798.pdfIn PDF document text
    • http://www.sunarpazarlama.com/wp-content/plugins/super-forms/uploads/php/files/ktj3nhk18b7lderedic035s5n3/seferodulukuninewazepaba.pdfIn PDF document text
    • http://hocomesun.com/upload/fuxibavukijikutamozuvelu.pdfIn PDF document text
    • https://aksusu.com/upload/files/91391855883.pdfIn PDF document text
    • http://notar-frings.de/userfiles/file/pigosipudisabasiture.pdfIn PDF document text
    • https://matratva.in/userfiles/file/64844469708.pdfIn PDF document text
    • http://stitesattorney.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/xujuxedalezajosewiv.pdfIn PDF document text
    • http://medicalproduct.hu/images/files/sazevigifulojotix.pdfIn PDF document text
    • http://daisytalavera.com/userfiles/files/76958822880.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/vItLtdF7Pec/uplcv?utm_term=how+to+get+goku+as+a+mentor+in+xenoverse+2PDF 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_off0000df3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF3A 19436 bytes
SHA-256: 66b6a900109bb28acfb232cd8f2bda7f58c0c27606a619b1349a5dc3caf067b7
font_01_sfnt_off0001123d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1123D 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012a54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12A54 10960 bytes
SHA-256: 78acc8758a332ee92d70be7b824bd0ecc5d36bc8efd270e0688b307d6b9b4eac

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