Malicious PDF — malware analysis report

Static analysis result for SHA-256 8baaf12d84e8efa4…

MALICIOUS

PDF

93.8 KB Created: 2021-09-23 14:08:02 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-23
MD5: d1f7d56d8d1b4c894de92bd5c730e372 SHA-1: 6885c0a4b9281378797d7182c1a1fd671f4463f9 SHA-256: 8baaf12d84e8efa4009a829c0b1f38944d32c7fad548abb9a51a138df5313a23
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs, many of which point to potentially malicious domains, suggesting a phishing or redirection attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and URL patterns are consistent with malware delivery or phishing campaigns.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 5

  • 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
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://lexuspolymers.com/assets/ckfinder/userfiles/files/63997767380.pdf In PDF document text
    • http://peggylittlelawoffice.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/30050290853.pdfIn PDF document text
    • http://guidesdugrandlarge.fr/images/import/file/93460854849.pdfIn PDF document text
    • https://autopsrus.com/ckfinder/userfiles/files/69766120365.pdfIn PDF document text
    • https://eobliecky.sk/userfiles/file/28170366302.pdfIn PDF document text
    • http://xn--oy2b9bv81anouola.com/upload/file/202109201222490331.pdfIn PDF document text
    • http://pantanalmsnews.com.br/ckfinder/userfiles/files/41426236420.pdfIn PDF document text
    • http://klick-tipp.at/ckfinder/userfiles/publics/files/jazodaxilikurumuxowiva.pdfIn PDF document text
    • https://euronuts2009.ge/files/files/6791675041.pdfIn PDF document text
    • http://yidaig.com/uploadfile/file/20210918075017.pdfIn PDF document text
    • http://soosanfix.com/upload/fckeditor/file/gitefipadom.pdfIn PDF document text
    • http://www.petercar0937494634.com/upload/img/files/64326874998.pdfIn PDF document text
    • http://mim2010.ru/userfiles/file/kosoxo.pdfIn PDF document text
    • https://hensuyenpqa.traigiongthuha.com/ckfinder/userfiles/files/44949371530.pdfIn PDF document text
    • https://jamiatulbanat.in/wp-content/plugins/formcraft/file-upload/server/content/files/1614848593a2a6---61796175848.pdfIn PDF document text
    • https://998.geektic.com/geektic/files/91754200572.pdfIn PDF document text
    • https://portalkucharski.pl/app/webroot/media/files/zizawimalun.pdfIn PDF document text
    • http://fashionflutters.com/ckfinder/userfiles/files/59552697837.pdfIn PDF document text
    • http://genarchi.com/data/temp/file/wibol.pdfIn PDF document text
    • http://fullcolorspandoeken.nl/userfiles/file/53517629921.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/gitotibakujaxawim.pdfIn PDF document text
    • http://idealhca.com/admin/images/file/40695654418.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=free+among+us+playPDF link annotation
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In 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_off000108bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108BB 10596 bytes
SHA-256: d99054ddbdb83b9d2c7f16475a1b4256cd1444d34106560c38a9533e1e6e1ec1
font_01_sfnt_off000120f0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x120F0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00013902.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13902 18736 bytes
SHA-256: a068479cba7923bd6e8403e21b8d3dd7e7fdd580390dc04e62d38581658f9b34

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