Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ae2e0b84f593ade…

MALICIOUS

PDF

83.2 KB Created: 2021-09-13 22:15:29 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 866a78b710d9c38921767a069a2fa614 SHA-1: f41760bc81e3a032be584829c6e8bfd115479b51 SHA-256: 0ae2e0b84f593ade59449754f6567c894bbc3b71994ae044a9feb8e003370f03
170 Risk Score

Malware Insights

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

The PDF contains embedded JavaScript and multiple external URIs, including one pointing to a raw IP address, indicating a redirection or download attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The presence of a link farm on disposable hosting further supports a phishing or malware distribution scheme.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9860

Heuristics 9

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://majortaylorride.info/images/uploaded/file/josepudasugipimaxowiterux.pdf In PDF document text
    • http://fgosvo.ru/files/files/71914059471.pdfIn PDF document text
    • https://www.toptalentusa.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131d88e5b57f---79660930465.pdfIn PDF document text
    • http://tycoonmedical.com/userfiles/file/45178634070.pdfIn PDF document text
    • http://achilleferolla.it/userfiles/files/59706162112.pdfIn PDF document text
    • http://www.verneteco.com/ckfinder/userfiles/files/wewezom.pdfIn PDF document text
    • https://www.sensormaticltd.com/app/templates/js/ckfinder/userfiles/files/91994197318.pdfIn PDF document text
    • http://techcessgroups.com/userfiles/file/jizebokoduxefuneme.pdfIn PDF document text
    • https://mudrun.com/home/mud/public_html/ckfinder/userfiles/files/kavixodimizolegavuwal.pdfIn PDF document text
    • https://webmakler.org/userfiles/file/40877562675.pdfIn PDF document text
    • http://rockhouseschool.com/rockhouse/uploads/files/22849677509.pdfIn PDF document text
    • https://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/1853fb3935f673381e7b96625a40b445/93556540653.pdfIn PDF document text
    • http://auto-spec.ca/fck/file/bixevar.pdfIn PDF document text
    • http://eko-gospodarstwo.eu/files/file/tesiloni.pdfIn PDF document text
    • https://bfull.ru/uploads/files/wovotemu.pdfIn PDF document text
    • https://brazilairporttransfers.com/ckfinder/userfiles/files/38283964192.pdfIn PDF document text
    • https://www.hmgfinance.com/ckfinder/userfiles/files/xadefitevalikanad.pdfIn PDF document text
    • https://pelicanfinancialnetwork.net/ckfinder/userfiles/files/mevedutazikegepi.pdfIn PDF document text
    • http://fatamorgana.fr/uploads/assets/file/fixajelujavag.pdfIn PDF document text
    • http://www.roosprommenschenckelfoundation.nl/ckfinder/files/files/29505051995.pdfIn PDF document text
    • http://beverly.kopanramen.com/uploads/files/fojoziduw.pdfIn PDF document text
    • https://thegioibaobicarton.com/Images_upload/files/22575984863.pdfIn PDF document text
    • http://studioaeditecne.it/userfiles/file/pefegisimemuwozarede.pdfIn PDF document text
    • http://104.156.58.56/~web2inbox/wp-content/plugins/formcraft/file-upload/server/content/files/16139b43b36f86---vubesarebixemuvan.pdfPDF link annotation
    • http://malabarisproducoes.com/arquivos/files/45437718866.pdfIn PDF document text
    • http://brain-sh.tw/upload/file/nofanuxomatikenumo.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/3CAf4wW3hvY/uplcv?utm_term=bhoothnath+returns+full+movie+123moviesPDF 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_off0000d950.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD950 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f162.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF162 19756 bytes
SHA-256: bbe0d031b0230c31bb459427c6de053bd50d843c22eb7cec38352f4fc16a42ff
font_02_sfnt_off00012528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12528 11044 bytes
SHA-256: 22764a38a5bdaca6656d06408b91e2840c4a8d45eb2f605bf0a87f2113d89089

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