Malicious PDF — malware analysis report

Static analysis result for SHA-256 1740f84920a9db39…

MALICIOUS

PDF

85.8 KB Created: 2021-09-17 17:44:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 6bbcd282279ffcf2d0eeab5e397945ab SHA-1: 1b041da36fb549c9f5ca4e0f1bb2da1ab0a0c2a0 SHA-256: 1740f84920a9db398c7b953f794f2ab9bd0eb29b2add74522a89dcc8f698421f
154 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a high number of external URIs, many of which are hosted on disposable domains. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The document's structure suggests it's designed to redirect users to various malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9985

Heuristics 7

  • 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.
  • QR-code redirect lure medium SE_QR_LURE
    Document instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
  • 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://garglob.ru/uplcv?utm_term=how+to+get+the+saved+wifi+password+in+android PDF link annotation
    • https://kham.vn/userfiles/file/tiliraposupilefotajoratel.pdfIn PDF document text
    • https://rubin2000-distribuitorshop.ro/userfiles/file/sewexisa.pdfIn PDF document text
    • http://luckyassessoria.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1613dbad2a3920---bobonuvudim.pdfIn PDF document text
    • http://jacsonsfurniture.com/userfiles/file/53278282421.pdfIn PDF document text
    • http://nwatchonline.com/userfiles/file/wukidisibonuw.pdfIn PDF document text
    • http://thegioixedap.net/upload/files/19953901491.pdfIn PDF document text
    • https://atcotourismtravel.com/userfiles/file/wazunobiwadawulidumoku.pdfIn PDF document text
    • http://kino-cosmik.ru/sadm_files/dagilixol.pdfIn PDF document text
    • http://budohurtsa.pl/userfiles/file/43159123227.pdfIn PDF document text
    • https://whatshoulditcostme.com/userfiles/file/43311697245.pdfIn PDF document text
    • https://www.gryf-wet.pl/ckfinder/userfiles/files/25572443177.pdfIn PDF document text
    • http://www.barbazan-debat.fr/ckfinder/userfiles/files/liwazapikupol.pdfIn PDF document text
    • http://hpworld.hu/data/pic/Image/file/xarisawolusekawikexo.pdfIn PDF document text
    • http://avvocato-callegaro.it/public/file/20951594172.pdfIn PDF document text
    • https://0924055971.com/uploads/files/202109121648108645.pdfIn PDF document text
    • http://titibbs.xyz/js/ckfinder/userfiles/files/lanitawinojenabujesupidi.pdfIn PDF document text
    • http://asu.com.vn/wp-content/plugins/super-forms/uploads/php/files/rrmheqedsuo0f7licec2niniil/rebature.pdfIn PDF document text
    • https://arbormaster.net/uploads/files/15021171294.pdfIn PDF document text
    • https://letajicikoberce.cz/userfiles/file/jitijarujulegukunewukak.pdfIn PDF document text
    • https://akapacha.com/userfiles/file/28540872548.pdfIn PDF document text
    • https://abouelhoulgroup.com/userfiles/files/pamosekotojawofapafinu.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_off0000e5cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5CC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000fde3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFDE3 10876 bytes
SHA-256: 47fef073f79f3633821b46360575115dc108ab24f3da160157fd965d99956e6f
font_02_sfnt_off000116d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116D1 19856 bytes
SHA-256: 3d2486b697cbcb9812443eae88e81ee1e44a9fb99f29db314e545e4f653e4829

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