Malicious PDF — malware analysis report

Static analysis result for SHA-256 41a50de7c618affb…

MALICIOUS

PDF

80.0 KB Created: 2021-10-13 01:50:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: 00ab73955227833fedd1f233ba4316ae SHA-1: cc3da595f611d47461f70ea6059610961e39e570 SHA-256: 41a50de7c618affbdf6a90662e6d81e1376147cb1a1f35a476e756862a3e2c01
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF was flagged by ClamAV as 'Pdf.Phishing.Trojan'. Heuristics indicate it is a link farm with many disposable hosts and UTM parameters, suggesting a phishing or malicious redirection attempt. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest it is designed to lead users to malicious websites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4647

Heuristics 4

  • 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
  • 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://koreaticketland.com/userfile/file/7267926206.pdf In PDF document text
    • https://irisapp.cn/uploadfiles/fckeditor/20211009/file/16337117222612.pdfIn PDF document text
    • http://kozhencherrymtc.org/userfiles/file/42357186818.pdfIn PDF document text
    • http://yipdeals.com/app/webroot/upload/files/xaxiriboviwaxu.pdfIn PDF document text
    • https://umartravel.com/files/xizodekijifoteguxusij.pdfIn PDF document text
    • https://tennis94.fr/img/pics/files/16584301062.pdfIn PDF document text
    • http://hijoin.hu/editor_up/40088453488.pdfIn PDF document text
    • http://www.c-l-r-p.com/admin/ckfinder/userfiles/files/45751816169.pdfIn PDF document text
    • https://valleyrentals.com/userfiles/file/63977885893.pdfIn PDF document text
    • http://www.solarwindependence.com/ckfinder/userfiles/files/90270073525.pdfIn PDF document text
    • http://j-line.ca/fck_upload/file/25583580038.pdfIn PDF document text
    • http://generaltubi.com/container/ckfiles/files/vovodanokene.pdfIn PDF document text
    • http://swapnakoodu.com/fck_uploads/file/26346771798.pdfIn PDF document text
    • https://naves.cz/res/file/76271662415.pdfIn PDF document text
    • http://fittbikese.hu/files/file/bekerezosokefepe.pdfIn PDF document text
    • http://www.accl-calibration.com/login/ckfinder/userfiles/files/nikebabogakor.pdfIn PDF document text
    • http://viajaconsciente.com/imagenes/userfiles/file/pebuvavobazunuzobovopap.pdfIn PDF document text
    • https://christembassybarking.org/wp-content/plugins/super-forms/uploads/php/files/b41f53545bc046faa03d0cc72bf503e0/25350712181.pdfIn PDF document text
    • http://orosweb.hu/userfiles/file/vosovadutofarojotaxijine.pdfIn PDF document text
    • https://datenglagi.com/contents/files/61287033922.pdfIn PDF document text
    • http://vinaktv.com/storage/ckfinder/files/xujaledojawixaperafol.pdfIn PDF document text
    • http://telesson.net/_UploadFile/Images/file/29357563894.pdfIn PDF document text
    • http://feedproxy.google.com/~r/MbOu/~3/cmwvf4RlXg4/uplcv?utm_term=best+site+for+cheap+gamesPDF link annotation
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fd06.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFD06 10832 bytes
SHA-256: c512ac177ea558a057d1021a6a16db66241006ccaa504e0a5b92b5c02c905358
font_01_sfnt_off0001161c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1161C 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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