Malicious PDF — malware analysis report

Static analysis result for SHA-256 e0bed202307bf4f1…

MALICIOUS

PDF

62.4 KB Created: 2021-04-11 18:23:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 4186bedc279288e6e9db4dc23a17832b SHA-1: 4eb43096b8ab773bcfb93f64f6844218dd0cf914 SHA-256: e0bed202307bf4f17db01868c099205c53e965da64636b4c1328ca6ae31f61de
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple heuristics, including a high ML score and ClamAV detection as a phishing trojan. The embedded links and the document body content suggest a lure for cracked software, specifically mentioning 'Kinemaster 4.2.0 cracked apk'. The PDF also functions as a link farm, directing users to various external domains, some of which host similar PDF files.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8124

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://www.osgeurope.com/sites/osg-corporate.dev/files/webform/99469138220.pdf
    • http://klm3fg.grhosting.cz/sites/default/files/webform/files/mimixinaxeralowevowijut.pdf
    • https://www.natsihwa.org.au/sites/default/files/webform/xexazud.pdf
    • http://pilgrimland.com/sites/default/files/webform/resume-uploads/52872338461.pdf
    • https://www.pharoxglobal.com/sites/default/files/webform/50635107556.pdf
    • https://www.natsihwa.org.au/sites/default/files/webform/81826716543.pdf
    • https://www.ofalloncasting.com/sites/default/files/webform/gegemapoxazokex.pdf
    • http://russian-ice-spb.ru/sites/default/files/webform/files/97818084314.pdf
    • https://www.uts.cw/sites/default/files/webform/suvexaxobufakup.pdf
    • https://www.enwidth.com/sites/default/files/webform/resumes/48862039041.pdf
    • http://oaklandchildcare.org/sites/default/files/webform/85278691340.pdf
    • https://grossenbacher.co.nz/en/system/files/avoidance-training-certificates/13471650610.pdf
    • https://www.a1touchsolution.nl/sites/default/files/56489371510.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://feedproxy.google.com/~r/Uplcv/~3/DOqCt-cVA4I/uplcv?utm_term=kinemaster+4.+2.+0+cracked+apk
    • https://campusrec.princeton.edu/system/files/webform/18758627140.pdf
    • https://ec.europa.eu/eip/agriculture/sites/default/files/webform/56905881998.pdf
    • https://ec.europa.eu/eip/agriculture/sites/default/files/webform/76225898136.pdf
    • http://scripts.sil.org/OFL

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d7d2.bin
1e803330e32c4c8a9a8b8809d66c9a41e607028fab06dce1d854b31bf707a642		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD7D2 5616 bytes

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