Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0e18f42f3b8b177…

MALICIOUS

PDF

81.5 KB Created: 2021-09-16 03:29:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-26
MD5: e92a778a3e181bbeaa872364f583e6c1 SHA-1: 54128848aa210307bdbd4f89a7ee6b1b08691945 SHA-256: f0e18f42f3b8b17721a173a1bd7413ce78a863468f1c413594a5f6ebe03b2efe
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs, many of which are associated with link farms and disposable hosting, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs are consistent with techniques used to redirect users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9960

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://coretry.ru/uplcv?utm_term=music+converter+android PDF link annotation
    • https://kermanrooz.com/img/files/jegetevafoberuxil.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/5035441443.pdfIn PDF document text
    • http://baggiez.net/userfiles/file/50149826843.pdfIn PDF document text
    • http://chinamakina.com/userfiles/file/11257391831.pdfIn PDF document text
    • https://amartzon.store/wp-content/plugins/super-forms/uploads/php/files/bfe4ebd8262c89dbf1195b24dc57dee7/37088937855.pdfIn PDF document text
    • https://leganordavigliana.com/uploads/file/93416157847.pdfIn PDF document text
    • https://tenshinorchids.com/FCKeditor_upload/file/wuxazizig.pdfIn PDF document text
    • https://dabanbep.tanglehadong.com/upload/files/35344875626.pdfIn PDF document text
    • https://cleanenergy.mn/uploads/files/wuwetefewapibex.pdfIn PDF document text
    • https://gres-k.cat/userfiles/file/82097166744.pdfIn PDF document text
    • https://adrfarysz.pl/userfiles/file/200353105.pdfIn PDF document text
    • https://keepingscore.org/userfiles/file/97137662785.pdfIn PDF document text
    • http://duplisite.com/userfiles/file/wegugototelowegobivob.pdfIn PDF document text
    • https://torrentclub.vip/wp-content/plugins/super-forms/uploads/php/files/stn1e7qchhtl1aqm7stog7sm7l/22827144132.pdfIn PDF document text
    • https://iasvn.org/Images_upload/files/67694699069.pdfIn PDF document text
    • http://cluboutletmoto.net/campannas/file/viketu.pdfIn PDF document text
    • http://longtra.vn/userfiles/file/81203932456.pdfIn PDF document text
    • http://www.primariasantana.ro/uploads/file/39402296433.pdfIn PDF document text
    • http://lienming-rubber.com/uploads/files/202109090308549197.pdfIn PDF document text
    • http://studiocalderini.it/userfiles/files/gepusitoxeropolekifem.pdfIn PDF document text
    • https://jajugroup.com/ckfinder/userfiles/files/87750900276.pdfIn PDF document text
    • https://inprovituruguay.com/ckfinder/userfiles/files/loxufapepegag.pdfIn PDF document text
    • https://safe-international.com/userfiles/file/xomemeku.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_off0000dbe7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBE7 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f3f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3F9 17508 bytes
SHA-256: a80152d4936c441c6efe9966554b2a51becd2fa0eabcd32a0493c6fa53c3cb13
font_02_sfnt_off000120ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120CE 10476 bytes
SHA-256: 6398ec3643c7b3b500f59aa8d9c12e278abddc04308f78519e5f70ac99bc53c7

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