Malicious PDF — malware analysis report

Static analysis result for SHA-256 ee49ef71db9e09da…

MALICIOUS

PDF

83.0 KB Created: 2021-09-09 00:24:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 7e526a5a82160b725233cad586fab68a SHA-1: 2a6aeec68a2796f3f592b11eb2dc06ac84613e33 SHA-256: ee49ef71db9e09da49318f6d8728d8f8866a7baa828f33a17254f96e715a6692
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as a malicious PDF by multiple heuristics and a machine learning classifier. It contains numerous embedded URLs, many of which are part of a link farm on disposable hosting, suggesting a phishing or malware distribution attempt. The ClamAV detection as 'Pdf.Phishing.Trojan' further supports this assessment. No scripts were extracted, but the presence of external URIs indicates an attempt to redirect the user to malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8170

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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
  • PDF differential parser failed info PDF_DIFFERENTIAL_PARSE_FAILED
    The cross-check parser (pdfminer.six) failed on this file: PDF differential parser failed: PDFSyntaxError. Static heuristics still ran and any of their findings above are valid; only the differential cross-check signal is missing.
  • 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://garglob.ru/uplcv?utm_term=gods+of+egypt+2+full+movie+download PDF link annotation
    • https://inwestorfinanse.pl/userfiles/file/67982578796.pdfIn PDF document text
    • https://bharatiyabhashaparishad.org/ckfinder/userfiles/files/zojutaj.pdfIn PDF document text
    • http://homeopathyhongkong.org/files/vifokidimejewegojodovo.pdfIn PDF document text
    • https://www.tessilgiada.it/wp-content/plugins/formcraft/file-upload/server/content/files/161381a22217c9---74821730678.pdfIn PDF document text
    • http://chroscina.com/userfiles/file/givotebasadulojaj.pdfIn PDF document text
    • http://dydlhx.com/upfiles/file///94205345694.pdfIn PDF document text
    • http://aktifbant.com/resimler/files/ligurazenapu.pdfIn PDF document text
    • https://www.xyoaa.org/sites/default/files/files/levawojaritowirowelu.pdfIn PDF document text
    • http://daiichibus.vn/uploads/news_file/84524940953.pdfIn PDF document text
    • http://www.injamal.es/nueva/ckfinder/userfiles/files/5435820242.pdfIn PDF document text
    • http://www.greddy.com/admin/common/ckfinder/userfiles/File/59119630782.pdfIn PDF document text
    • http://chono.mn/uploads/userfiles/files/43779736230.pdfIn PDF document text
    • https://dom4m.de/userfiles/files/69737980732.pdfIn PDF document text
    • http://888chji.com/userfiles/files/36935503838.pdfIn PDF document text
    • https://bawauang.com/contents/files/xejibetidamewiwipuvale.pdfIn PDF document text
    • http://namngonviet.com/user-/files/64440122060.pdfIn PDF document text
    • http://apisicul.com/userfiles/files/dororazi.pdfIn PDF document text
    • http://tavaszitura.eu/userfiles/files/rivigajet.pdfIn PDF document text
    • https://goldenlinejsc.com/userfiles/file/42800865235.pdfIn PDF document text
    • http://abwninemile.com/uploads/files/48353484991.pdfIn PDF document text
    • https://alharithiforcameras.com/ckfinder/userfiles/files/xoxas.pdfIn PDF document text
    • https://www.bakkersvlaanderen.be/resources/plugins/ckfinder/userfiles/0/files/93061612803.pdfIn PDF document text
    • https://lyna-garage.com/htdocs/cljr/data/files/mokefugifevugar.pdfIn PDF document text
    • http://chongthamnguoc.vn/img/files/poxasofelalixudunejirofe.pdfIn PDF document text
    • http://abwrichmond.com/uploads/files/96796163674.pdfIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7e5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7E5 17612 bytes
SHA-256: 3a45296313927c0608187de570bdf86dfef368bd154f830f33b02dcac7c84596
font_01_sfnt_off0001154f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1154F 11264 bytes
SHA-256: 4cc8654a2c362af3c7f21687d1969cf6374b929d3ef3dbd33dac4b628ef9b77d
font_02_sfnt_off00012fb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12FB9 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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