Malicious PDF — malware analysis report

Static analysis result for SHA-256 947eb253e7c9134f…

MALICIOUS

PDF

70.3 KB Created: 2021-09-23 03:28:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-24
MD5: f1ab3dd7f474d98c49b3126fe8207517 SHA-1: 581227758a28d21bed74d4db8979a2076c2259dd SHA-256: 947eb253e7c9134f5056ea30291fdec9f72940b658a4e4fde48e29ba3a1716c4
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file was flagged by a machine learning classifier and ClamAV as malicious. It contains numerous embedded URLs, many of which are part of a link farm structure, suggesting a phishing or malware distribution attempt. The authoring application 'wkhtmltopdf' is unusual for a malicious PDF, but the overall structure and heuristic firings strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8398

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 https://huntic.ru/uplcv?utm_term=what+channel+is+gervonta+davis+on PDF link annotation
    • http://airmon.hu/images/files/pejodi.pdfIn PDF document text
    • http://vonschickenfremont.com/uploads/files/jizupe.pdfIn PDF document text
    • http://baobianhkhang.com/upload/files/tanabewe.pdfIn PDF document text
    • http://airsoft1.ro/files/file/befube.pdfIn PDF document text
    • https://pharma-tools.pl/galeria/file/pulanarinowegasusor.pdfIn PDF document text
    • http://red-persimmons.com/upfiles/editor/files/46805723491.pdfIn PDF document text
    • http://xn--80aafmoni2biho.xn--p1ai/admin/ckfinder/userfiles/files/12367922200.pdfIn PDF document text
    • http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1612f932361e75---32187733522.pdfIn PDF document text
    • http://chieucoingason.vn/files/jikevewurupifaki.pdfIn PDF document text
    • https://swagath.co/new/ckfinder/userfiles/files/71960986356.pdfIn PDF document text
    • http://yachts-trade.com/files/xebakusotejifekuwibo.pdfIn PDF document text
    • https://everywheregenes.com/uploadfile/qu26_qu106_com/files/ketaxepavelatawakuvorifuf.pdfIn PDF document text
    • https://sysyanginguvenlik.com/uploads/files/12009560199.pdfIn PDF document text
    • http://solarexperten.ch/fckeditor/editor/images/file/80248099754.pdfIn PDF document text
    • http://osayit.com/images/file/50980655304.pdfIn PDF document text
    • http://www.iciparis.ru/ckfinder/userfiles/files/1805144938.pdfIn PDF document text
    • https://congnghieptauthuyvietnam.vn/upload/files/zapajerenujezafoke.pdfIn PDF document text
    • https://baoholaodong24.com/userfiles/file/lezunexuxesewenon.pdfIn PDF document text
    • https://www.fmworks.com.tr/wp-content/plugins/super-forms/uploads/php/files/47huvjpdv8cuq2lgjqj774lol8/16081334280.pdfIn PDF document text
    • http://freeware-software-download.de/uploads/editor/file/93493477063.pdfIn PDF document text
    • https://mygrind.ie/userfiles/file/35438970595.pdfIn PDF document text
    • https://krassimirtaskov.com/userfiles/files/57669018999.pdfIn PDF document text
    • http://www.vikingmaterials.com/img/bigetogigefinujotizupopej.pdfIn PDF document text
    • http://1-champagne.com/blog_images/blog_/file/17375238908.pdfIn PDF document text
    • http://alfavs.eu/userfiles/file/8801346415.pdfIn PDF document text
    • http://daydreamspin.com/userfiles/file/menabarulotujo.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e219.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE219 19036 bytes
SHA-256: 77098f6d32ca7b710088e5469343379faaa70b5b37f87ea8c874d0d0d33d5993

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