Malicious PDF — malware analysis report

Static analysis result for SHA-256 32ea89faae9023f4…

MALICIOUS

PDF

87.8 KB Created: 2021-09-17 23:37:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: e1eb6c7f3ac1e59edb6acfb1ef1bc51b SHA-1: 0b27aac40b2c0198ed5f263af48db8ddb517f123 SHA-256: 32ea89faae9023f44a651fd839b2b09f7271b1e1f23b2f579d2a75f289cb8009
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a high number of external links, many pointing to disposable domains, indicating a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly suggest malicious intent. The embedded JavaScript likely facilitates the redirection or execution of malicious content from the linked URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9956

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
  • 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.
  • 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 https://eminenceconstruction.ca/viking1/uploads/files/pewakowo.pdf In PDF document text
    • http://orchid-daikanyama.com/userfiles/file/vimevitipube.pdfIn PDF document text
    • http://szm.hu/userfiles/file/susovomap.pdfIn PDF document text
    • http://breakevenpoint.pl/uploads/editor/file/finolomuruxixirafabagon.pdfIn PDF document text
    • http://zssadkowice.pl/pliki/bebobavozoxuvo.pdfIn PDF document text
    • https://www.sensormaticltd.com/app/templates/js/ckfinder/userfiles/files/jirovix.pdfIn PDF document text
    • http://kasintorn.com/images/upload/files/36208343446.pdfIn PDF document text
    • http://xn----7sbabaajmdfbk3ddf3azka3b6a2r.xn--p1ai/ckfinder/userfiles/files/nexiduruzuvos.pdfIn PDF document text
    • http://magnumprint.ru/upload/files/28239873253.pdfIn PDF document text
    • https://textosolutionslinguistiques.ca/upload/editor/file/59265549063.pdfIn PDF document text
    • https://betalinktech.com/blmedia/file/pelovegiju.pdfIn PDF document text
    • https://asiastudy.in/ckfinder/userfiles/files/14151003951.pdfIn PDF document text
    • http://wm-meyer.de/meyer/admin/editor/ckfinder/userfiles/files/56879621809.pdfIn PDF document text
    • http://www.oteliapelsin.ru/ckfinder/userfiles/files/tumifuloroxadijepogasa.pdfIn PDF document text
    • https://bozoklar.org/ckfinder/userfiles/files/jijapopopiji.pdfIn PDF document text
    • https://diversifiedhumansolutions.com/wp-content/plugins/super-forms/uploads/php/files/57bfb68b55f13b416ccbdd3fb243c17e/96564692417.pdfIn PDF document text
    • http://leprofit.ee/cmsfile/contentfiles/niraja.pdfIn PDF document text
    • https://mcq.bmtinhoc.vn/InteriorWeb/images/images_news/files/89688927997.pdfIn PDF document text
    • http://angelojrobles.com/admin_initial_test/userfiles/file/42690661560.pdfIn PDF document text
    • http://irodaszer.lukinserv.hu/file/makolekuwepaz.pdfIn PDF document text
    • https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b20430cc04---79740948351.pdfIn PDF document text
    • https://bdata.vn/upload/files/rezofelenituzelonasekil.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/zMnd8XtcwSM/uplcv?utm_term=robux+code+websitePDF 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_off0000f351.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF351 18428 bytes
SHA-256: 581caf692bd82a08e313b90d91e8cb571527d76a47045265ba6747c86580f727
font_01_sfnt_off00012270.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12270 10424 bytes
SHA-256: d223de346e3055255ed37fbe1f20b237bceb4bf3e1a2748b91675649e06b2588
font_02_sfnt_off00013a53.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13A53 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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