Malicious PDF — malware analysis report

Static analysis result for SHA-256 c07e746e49cf2475…

MALICIOUS

PDF

94.0 KB Created: 2021-09-22 14:58:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: c94f3a7978a47c05c036ebb90a330e4e SHA-1: 09ba032754aa78e7fed175cab2bbd4af34086c01 SHA-256: c07e746e49cf2475237236540b68f25ccd29dc602358dc9f9afa124151134da2
156 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. It contains numerous links to external websites, many hosted on compromised or disposable domains, suggesting it functions as a link farm. The presence of embedded URLs and the nature of the heuristics strongly indicate that the primary purpose is to redirect users to malicious content, likely for credential harvesting or further malware deployment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9935

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://cructi.ru/uplcv?utm_term=magni+and+modi+god+of+war PDF link annotation
    • http://0575zl.com/userfiles/file/bujupatibagan.pdfIn PDF document text
    • http://togul.org/sites/default/files/file/jopibik.pdfIn PDF document text
    • http://moveisgarciadigital.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613fcc67aeade---18472659495.pdfIn PDF document text
    • https://ventana-sur.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613add11a06fb.pdfIn PDF document text
    • http://seksdagen.nl/userfiles/file/xodukaxafobojusawuvip.pdfIn PDF document text
    • https://www.kadeavenue.com/wp-content/plugins/super-forms/uploads/php/files/50a37fa5369f6bb89a5d855b33006886/53988339248.pdfIn PDF document text
    • http://marcus-1.com/FileData/ckfinder/files/20210906_9009CB4CAA1A914A.pdfIn PDF document text
    • http://avvocato-callegaro.it/public/file/dovaxurebunetonezi.pdfIn PDF document text
    • http://romengo.com/ckfinder/userfiles/files/rotukadilokimem.pdfIn PDF document text
    • http://csc0532.com/userfiles/file/20210911211012_f4x4bs.pdfIn PDF document text
    • http://yourtruck.be/upload/ckeditor/file/9295780355.pdfIn PDF document text
    • http://hglobaltour.com/FileData/ckfinder/files/20210907_459AF683F8A3DAFD.pdfIn PDF document text
    • http://daisytalavera.com/userfiles/files/rimebagol.pdfIn PDF document text
    • http://booklandbooks.com/userfiles/file/xewazedikulinururigufon.pdfIn PDF document text
    • http://www.singchai.co.th/ckfinder/userfiles/files/xebagozipabijorejipi.pdfIn PDF document text
    • http://tmkb.org.tr/ckfinder/userfiles/files/55396094437.pdfIn PDF document text
    • https://www.lokalesichtbarkeit.de/wp-content/plugins/super-forms/uploads/php/files/or2qf7cii0qogm2nut6gtmk0a7/fejalurefo.pdfIn PDF document text
    • https://www.mftelhas.com.br/adm/Editor/ckfinder/userfiles/files/tonumerojulajokotiziwix.pdfIn PDF document text
    • http://vrtaspol.cz/klienti/devel/sneznerolby.cz/ckfinder/userfiles/files/tegan.pdfIn PDF document text
    • http://ekorob.pl/userfiles/file/77777214329.pdfIn PDF document text
    • https://metrosecuritynepal.com/assets/userfiles/files/rovidagabedebejuw.pdfIn PDF document text
    • https://gogift-it.com/userfiles/files/6378010835.pdfIn PDF document text
    • https://steammining.com/userfiles/file/55642586679.pdfIn PDF document text
    • http://conniecorsentino.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/papikulewilosimimif.pdfIn PDF document text
    • 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_off00010567.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10567 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off00011d7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D7E 10332 bytes
SHA-256: 1440e83cb3bbd346900a32f8f3b76c8452a5f6d67b0ed9f90fb2a6c3396f6537
font_02_sfnt_off0001348a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1348A 20696 bytes
SHA-256: 7717cc2ea0dacd4fc4cd00530e807e15a1ac618bd52c8790a025008e48371724

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