Malicious PDF — malware analysis report

Static analysis result for SHA-256 afeab9f2d1926f23…

MALICIOUS

PDF

79.1 KB Created: 2021-09-19 05:44:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-16
MD5: af0fa0400ccae315f574721980c3d895 SHA-1: 38cea20cd1cc6c8248bc22b245c1e8a59555fee5 SHA-256: afeab9f2d1926f23c57c3ce32704b65360540aa975725897e4f809f7343ddd88
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for exploiting vulnerabilities or delivering malicious content. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' and the large number of extracted URLs suggest a phishing or redirection campaign. ClamAV detection further confirms the malicious nature of the file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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://archism.ru/uplcv?utm_term=do+i+need+to+play+nier+before+automata PDF link annotation
    • http://www.sainteuphrasia.com/www/js/ckfinder/userfiles/files/89181393482.pdfIn PDF document text
    • http://esistore.lu/userfiles/file/bixuvewixafelukanob.pdfIn PDF document text
    • http://tehnicgaz.eu/files/file/gewowimapixetatiguka.pdfIn PDF document text
    • https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/33f532aca7a4f113e399e662bfdcce49/tebiviw.pdfIn PDF document text
    • http://metroboxservices.com/upload/ckimage/files/saxajuzefotonusoga.pdfIn PDF document text
    • http://abdon.madteam.net/ckfinder/userfiles/files/pifati.pdfIn PDF document text
    • http://ip-golubev.ru/ckfinder/userfiles/files/jodaminutexixewewaxu.pdfIn PDF document text
    • https://zilalcooling.com/other_files/File/wuxodefejo.pdfIn PDF document text
    • https://siliconautomation.com/userfiles/file/jowamija.pdfIn PDF document text
    • http://sistarelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/56489154880.pdfIn PDF document text
    • http://gtlfuelmarine.com/userfiles/file/72730507969.pdfIn PDF document text
    • https://goodline.by/userfiles/file/87262626442.pdfIn PDF document text
    • http://nassagroup.org/app/webroot/js/ckfinder/userfiles/files/40119841053.pdfIn PDF document text
    • http://big-blue-bus.com/pics/fotos/1/file/wadodenotodekanunujuse.pdfIn PDF document text
    • https://ntpuvoice.com/ckfinder/userfiles/files/zurorilapagiti.pdfIn PDF document text
    • http://riversedgefm.com/files/file/71620849026.pdfIn PDF document text
    • http://vytvarnyobchod.cz/UserFiles/File/94282999011.pdfIn PDF document text
    • http://sakem.org/userfiles/files/51832121258.pdfIn PDF document text
    • https://jbdclothiers.net/emailer/userfiles/file/82862729174.pdfIn PDF document text
    • http://tgroupsrl.com/userfiles/files/18421286524.pdfIn PDF document text
    • http://sorokolaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/kelerusaf.pdfIn PDF document text
    • https://mrpressconsulting.com/UserFiles/file/48168150297.pdfIn PDF document text
    • 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_off0000cd54.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD54 18524 bytes
SHA-256: b7596deabf1420598b4ed67398973491606e74321af095597cb420afe93294de
font_01_sfnt_off0000fdeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDEB 10848 bytes
SHA-256: 2a59be6a49f04ad441f2ef6b5c7c0778990ea290bcb88996d324d51f27457acb
font_02_sfnt_off000116b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116B0 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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