Malicious PDF — malware analysis report

Static analysis result for SHA-256 906234fddf16a94e…

MALICIOUS

PDF

78.8 KB Created: 2021-09-13 13:49:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23
MD5: 84de60c2473ceae3382d67f171bdee24 SHA-1: 15b64263332f481a45fd1e26eac909a2f8882220 SHA-256: 906234fddf16a94e76d9cad38c5280f75038a07284c197f66b46dbbdf5a879f0
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, which is a common technique for delivering malicious content. The presence of numerous links, including one disguised as a game download, suggests a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly indicate malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9958

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 http://locthanhroyal.com/upload/files/merov.pdf In PDF document text
    • http://footstepfloor.com/upfiles/files/gemefudexu.pdfIn PDF document text
    • http://travelbilet.ru/sites/default/files/file/20839694764.pdfIn PDF document text
    • https://cryptoshift.be/anaeter_capital/siteadmin/userfiles/files/63649280411.pdfIn PDF document text
    • http://flixgolf.com/ckeditor/ckfinder/userfiles/files/vuwudukubowekuvulirebetit.pdfIn PDF document text
    • http://www.marsagri.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613b4857d65ca---72244136210.pdfIn PDF document text
    • http://mybed.tw/uploads/files/202109032225495351.pdfIn PDF document text
    • http://op-gold.com/ck_image/files/duwibesapugosip.pdfIn PDF document text
    • https://www.wemservice.com/ckfinder/userfiles/files/wixemepotesasibunep.pdfIn PDF document text
    • http://daltan.hu/userfiles/file/kinitokidijuximorinivule.pdfIn PDF document text
    • https://palet-school.com/files/files/73643643079.pdfIn PDF document text
    • http://dietetyka-24.pl/images/files/wukabejinewagotekudewo.pdfIn PDF document text
    • http://leaguengn.com/userfiles/file///jojola.pdfIn PDF document text
    • http://pcserviszlin.cz/ckfinder/userfiles/files/kuzinonikujutawe.pdfIn PDF document text
    • https://produse-zilan.ro/files/4398594573.pdfIn PDF document text
    • http://lynxauto.ru/userfiles/file/90957333347.pdfIn PDF document text
    • http://yoshitomo-kokubunji.com/jcfiles/file/71783214367.pdfIn PDF document text
    • http://gbfrjournal.org/pds/userfiles/files/23175173454.pdfIn PDF document text
    • https://dodomacnosti.net/data/file/99938673233.pdfIn PDF document text
    • http://goldenagegroup.vip/userfiles/file/bitexufe.pdfIn PDF document text
    • https://xcheck.vn/uploads/userfiles/file/suxizovoluxigegixu.pdfIn PDF document text
    • https://hotelmitrutarija.com/uploaded/files/67681828555.pdfIn PDF document text
    • https://imad0c0.com/js/ckfinder/userfiles/files/wulodonevurebud.pdfIn PDF document text
    • https://feedproxy.google.com/~r/skout/mBVl/~3/GLLx1DTH0VQ/uplcv?utm_term=pubg+lite+beta+apkPDF 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_off0000c9b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9B8 10268 bytes
SHA-256: 1e4cbd530e9b024724c17e1e68f41c03143be7916cd688d9c8c24416ad2d09ca
font_01_sfnt_off0000e0b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE0B1 20300 bytes
SHA-256: d7729a9096c8f29efa253bd3b1afeb16586eab72b20b0116606d4e711c8c42f6
font_02_sfnt_off000115ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x115EE 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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