Malicious PDF — malware analysis report

Static analysis result for SHA-256 f450618df1c85d2f…

MALICIOUS

PDF

59.9 KB Created: 2021-09-26 13:28:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: aa36ccb33e258d712b04e6fc2a0b73fe SHA-1: f4a7566b27806123291adad0c2c3eb1d07d1a2da SHA-256: f450618df1c85d2fb53a2f2e6cc751400f6b468dd587b4cd7e7a4e62016cc38f
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document is identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a phishing lure. It contains numerous links pointing to compromised CMS uploads and disposable hosting, suggesting an attempt to redirect users to malicious content. The document's structure and heuristics indicate it is designed to trick users into clicking embedded links, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6508

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 59 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613c98563b8d1---52963299216.pdf In PDF document text
    • http://omgmediatank.com/userfiles/files/60045207753.pdfIn PDF document text
    • https://arsenev.verlauf-ekb.ru/admin/ckfinder/userfiles/files/setema.pdfIn PDF document text
    • http://aasghsflqsae.handylover.com/upload/files/xevurofutinabakuzani.pdfIn PDF document text
    • http://thomas-zigon.de/images/file/20510410609.pdfIn PDF document text
    • http://yjeverspeed.com/userfiles/file/rarixemafovuwudo.pdfIn PDF document text
    • http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e0d0441a8c---vopefekizamubevawaxa.pdfIn PDF document text
    • http://studio-orlandini.com/userfiles/files/49610064054.pdfIn PDF document text
    • https://luxartparquet.com/wp-content/plugins/super-forms/uploads/php/files/f1dbc3527f22a1a9b59e53333cce0a3a/49492513710.pdfIn PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/161436b3fea442---pesaver.pdfIn PDF document text
    • http://ksklinika.ru/ckfinder/userfiles/files/dixigabuxefav.pdfIn PDF document text
    • https://chandrakantmusicacademy.org/ckfinder/userfiles/files/99615423490.pdfIn PDF document text
    • http://zaun-produzent.de/userfiles/file/jaxogodulivamiv.pdfIn PDF document text
    • https://rainbowprinter.com/app/webroot/files/file/zozinabezakudo.pdfIn PDF document text
    • http://erainbowrealty.com/userfiles/file/majuvafovorakidi.pdfIn PDF document text
    • http://hoteldarim.ir/basefile/hoteldarimir/files/nujovumibivud.pdfIn PDF document text
    • http://nsmpublicschool.org/slbdavbatala/userfiles/file/gatokuzeresex.pdfIn PDF document text
    • http://totalfinance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613f58554beb2---13826335155.pdfIn PDF document text
    • https://eclipsetheaters.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614e64ea748d8---jufim.pdfIn PDF document text
    • http://xn--2-7sbddqrtdw3be6jua.xn--p1ai/userfiles/file/tigofurikekipapaviko.pdfIn PDF document text
    • http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613629d0445be---66022303015.pdfIn PDF document text
    • http://mc-opony.pl/files/file/naletuvotifavoriwemunumop.pdfIn PDF document text
    • http://www.meglobalinc.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/161395bef1eb1b---fezodevezebogawozozoxo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=one+piece+stampede+full+movie+watchPDF 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_off0000b057.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB057 11064 bytes
SHA-256: 20d6ad4467e7e2f87213cc12da09db37db5dd12626c1d2eaadf1c210a17e5e68
font_01_sfnt_off0000c9ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9FF 14356 bytes
SHA-256: e12d6001c2e35e27cc0a960d322edafdacc05f12e116b1b10549fff73f1250df