Malicious PDF — malware analysis report

Static analysis result for SHA-256 180a68b26d1a0657…

MALICIOUS

PDF

86.0 KB Created: 2021-09-18 02:52:08 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3)
MD5: adf9023a12008114dc614698fefce1fe SHA-1: aa09c0991434907e085e94ca18b555c09bfd0021 SHA-256: 180a68b26d1a0657aaafe60243f500fb5378558eaa8c341709c954df0ce48ff8
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was detected as a phishing trojan by ClamAV. It functions as a link farm, containing numerous embedded URLs that point to external PDF files hosted on various domains. The presence of a 'utm_term_redirector' heuristic suggests these links are intended to lure users to potentially malicious content or phishing sites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.3358

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://www.ih-consultant.com/ckfinder/userfiles/files/14069937488.pdf
    • http://amicalelaique-guyancourt.fr/ckfinder/userfiles/files/xelunujopimokubigekimiwet.pdf
    • https://mi-stores.com/basketballtotaal/images/editor/file/42741043040.pdf
    • https://pamukoglu.com/userfiles/file/57331801240.pdf
    • http://marketingnews.fr/images/file/21553907846.pdf
    • http://educasters.co/ckfinder/userfiles/files/98646775331.pdf
    • http://www.pointcookelectrician.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1613f080e442b8---penenosedago.pdf
    • http://clinton.abwingsmd.com/uploads/files/sotep.pdf
    • http://ablerexthailand.com/userfiles/files/gemifujukapubegubiji.pdf
    • https://textosolutionslinguistiques.com/upload/editor/file/gepewaximekamoxo.pdf
    • https://12shio3.com/contents/files/tiboninurikuguzagubuxigo.pdf
    • http://wsm.hk/images/uploadfiles/file/76221204014.pdf
    • http://apart1day.ru/file/lifelunikinemexevorafanek.pdf
    • https://stcc-sa.com/motakamel/Ups/files/moxonajaxakuzevofuz.pdf
    • https://recrut.com/files/files/59505825502.pdf
    • http://hfnhsw.com/upload/files/43515447397.pdf
    • http://geometrarontani.it/userfiles/files/pulikinakurigedanitedovof.pdf
    • http://bartuceviri.com/userfiles/file/97001812585.pdf
    • https://thietbigas.net/media/files/zuvumajilu.pdf
    • http://praguynakorn.com/praguynakorn/picture/datapro/files/joposanutit.pdf
    • http://studiolorenzoni.eu/userfiles/files/88554064831.pdf
    • https://gionggiacam.com/ckfinder/userfiles/files/fefipunadakir.pdf
    • http://komodovo.ru/upload_picture/lakamud.pdf
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=cuckoo%27s+nest+pdf
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010d00.bin
a10e6f99f9fa2692f3c9e1ed305a496762e7a33cd8764c22d0e5d223c8552dc3
pdf-font-stream PDF embedded font (sfnt) at offset 0x10D00 10468 bytes
font_01_sfnt_off0001250c.bin
9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
pdf-font-stream PDF embedded font (sfnt) at offset 0x1250C 16792 bytes