Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0d196922dfb530d…

MALICIOUS

PDF

85.1 KB Created: 2021-09-14 07:00:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-11
MD5: 3277c0e0f364186d6aa4eecbbee92c7b SHA-1: 0b3181f80429e50a0aecd53acbeffb626c55abfe SHA-256: e0d196922dfb530d13314fcac5d9f43e36714349bc6cf4aae12015984e148f57
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to disposable domains, a common tactic for phishing or distributing further malware. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and URL patterns suggest it's designed to redirect users to malicious content, likely a phishing page or a download site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

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://smidgel.ru/uplcv?utm_term=how+to+download+music+to+your+android+device PDF link annotation
    • http://tweedehandswikkelaar.nl/app/webroot/files/userfiles/files/bugirajigenapebobuw.pdfIn PDF document text
    • https://www.revistadefiesta.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e0a370494f---mupadadubabuxigogoserino.pdfIn PDF document text
    • https://angel-juicer.com/FileData/ckfinder/files/20210911_8553650AB4D07F6C.pdfIn PDF document text
    • https://betenagro.com/sites/default/files/file/goguduvolagolavi.pdfIn PDF document text
    • https://jaunimodienos.lt/wp-content/plugins/super-forms/uploads/php/files/ihde3s4j52tqrl38pg76qvpm9q/77448381649.pdfIn PDF document text
    • https://reparationmobile.net/userfiles/file/rutekenumonomekoj.pdfIn PDF document text
    • http://www.c-l-r-p.com/admin/ckfinder/userfiles/files/62221178690.pdfIn PDF document text
    • http://linuxnewyork.com/draft/media/sakuwavuforasugesuso.pdfIn PDF document text
    • http://biondiairsystem.it/userfiles/files/40053030578.pdfIn PDF document text
    • https://togeltop.net/contents/files/88906246226.pdfIn PDF document text
    • https://windscrm.net/files/file/43051101865.pdfIn PDF document text
    • http://www.bufolari.com/public/immagini/file/63539357799.pdfIn PDF document text
    • https://eijo.in/ckfinder/userfiles/files/39340445416.pdfIn PDF document text
    • http://hichipper.com/hichipper/uploadfile/file/2021090101015873499.pdfIn PDF document text
    • https://strongpointmarketing.net/userfiles/file/31358691018.pdfIn PDF document text
    • http://www.mediagrand.hu/data/editorfile/80134027102.pdfIn PDF document text
    • https://evrenmentese.com/upload/ckfinder/files/xopakogovusejumanodoneto.pdfIn PDF document text
    • https://alpinashop.bg/files/46544029275.pdfIn PDF document text
    • http://airfa.it/userfiles/file/64191924790.pdfIn PDF document text
    • http://phyllisrubensteinlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/21336692881.pdfIn PDF document text
    • http://fnathservices.com/upload/file/2947667890.pdfIn PDF document text
    • http://guitarenko.fr/img/files/vozobi.pdfIn PDF document text
    • http://alpha-th.com/userfiles/file/lekotukirugamunariwudape.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_off0000e575.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE575 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fd87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD87 18644 bytes
SHA-256: c0fd6ab92185bc2e3698c660b57609ecb168587f3db81dfb0ba2ebb919883544
font_02_sfnt_off00012d98.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12D98 10888 bytes
SHA-256: ca0bcc60979cf0de216ac6474e9d90693cfaf1366324a80fc86e0c85308ac963

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