Malicious PDF — malware analysis report

Static analysis result for SHA-256 be1bf8b40b6751b2…

MALICIOUS

PDF

78.5 KB Created: 2021-09-18 07:33:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 33af267790de1022c0f87ee3076425b2 SHA-1: e2a5e25d41d1d33e088e5e1f9aebf2b232f4da15 SHA-256: be1bf8b40b6751b29903acbfb7e7b093126f6538fe9a6c49d0cdcc1c397cdfcb
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file was detected as a malicious PDF by ML classifiers and ClamAV. It contains numerous embedded URLs, many of which point to suspicious domains and are likely part of a link farm designed to redirect users. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic indicates a deliberate effort to obscure the final destination, suggesting a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9982

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://majubesar.com/contents/files/54061045264.pdf In PDF document text
    • https://letstravelforacause.com/miet/assets/files/bebusiraxeribasujexusa.pdfIn PDF document text
    • http://cgl.lu/userfiles/files/rerokefolofunupimu.pdfIn PDF document text
    • http://numismatika-nbkpdy.cz/userfiles/file/gugojiwipuvigiw.pdfIn PDF document text
    • http://escuelasfutbol8.com/docs/files/komizutavolibonefawide.pdfIn PDF document text
    • https://unique.global/wp-content/plugins/super-forms/uploads/php/files/df5df7c94e1d7e344d1bab4b556d1a1d/6630865346.pdfIn PDF document text
    • http://drivescuolaguida.it/userfiles/files/26518180687.pdfIn PDF document text
    • https://audreyheselmans.com/_files/file/45085008113.pdfIn PDF document text
    • http://thanhnhomdinhhinh.net/uploads/files/85762906845.pdfIn PDF document text
    • http://world-housing.jp/ckfinder/userfiles/files/69665438790.pdfIn PDF document text
    • http://chrislahoda.ca/userfiles/file/57977713888.pdfIn PDF document text
    • http://paramountswimwear.com/userfiles/files/2541696242.pdfIn PDF document text
    • http://sweethomedelivery.com/ckeditor/ckfinder/core/connector/php/uploads/files/giwosopagoxovosiwa.pdfIn PDF document text
    • https://frasertechno.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613a84d57a889---67884633809.pdfIn PDF document text
    • http://outspokenholland.com/userfiles/fckFile/20210918093733.pdfIn PDF document text
    • http://irvinenott.co.uk/ckfinder/userfiles/files/fedoxetuwapofawusopu.pdfIn PDF document text
    • https://www.agcontraincendios.es/ckfinder/userfiles/files/xoruzezumawexijojajuwola.pdfIn PDF document text
    • https://pikhospital.com/ck_uploads/uploads/files/nilenajuriwagakixulif.pdfIn PDF document text
    • https://underworldgear.com/upload/users/files/84599340553.pdfIn PDF document text
    • http://mywymc.com/userfiles/file/82714351543.pdfIn PDF document text
    • http://ekstelekom.com/userfiles/file/bujawojarigerit.pdfIn PDF document text
    • https://feng-shuiworld.com/userfiles/file/jasukutij.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/fzgW7-mxBc0/uplcv?utm_term=shakti+shakti+full+episodePDF 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_off0000cdf0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDF0 10660 bytes
SHA-256: c43ad7c5afe35916683bdb3b2adcb4ce4a06e65ef5eb12040ae66dbeb493738c
font_01_sfnt_off0000e678.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE678 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off0000fe8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE8A 17788 bytes
SHA-256: 59d188a9cf2648e9b22515aba25fac74f1db2d32b98701d65aa380ee65fbd771

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