Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ad068d06d39cb67…

MALICIOUS

PDF

78.6 KB Created: 2021-09-12 11:15:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-20
MD5: 25ed1b27e55f9fa10df90aead0924253 SHA-1: cf82351786b116dabe29c728e66d6e0156424e43 SHA-256: 0ad068d06d39cb6758f2a0bcbddb77a75e5d4132ac5f34b6c8057a21939244cc
166 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs and is flagged as a link farm, suggesting it's designed to redirect users to malicious content. The 'SE_PASSWORD_ARCHIVE_LURE' heuristic indicates a common tactic to hide malicious payloads. While no scripts were explicitly extracted, the presence of PDF-specific heuristics and numerous external links points towards a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9953

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
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • 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://huntic.ru/uplcv?utm_term=cara+melihat+password+wifi+di+android+root PDF link annotation
    • http://cen7dias.es/userfiles/files/tipugasepegivowewariw.pdfIn PDF document text
    • https://nabijdefossa.nl/upload/files/regulop.pdfIn PDF document text
    • http://hutnia.pl/userfiles/file/78632647674.pdfIn PDF document text
    • http://sakirnoopo.ru/wp-content/plugins/super-forms/uploads/php/files/14a886e93fa2c018470f8d95d56bb853/14323721608.pdfIn PDF document text
    • http://franzoesischebulldoggen.eu/userfiles/file/67642209974.pdfIn PDF document text
    • http://miet-boot.ch/images/uploadedimages/file/duwosemekevaboxij.pdfIn PDF document text
    • http://domuran.pl/files/file/87313532089.pdfIn PDF document text
    • http://webinaris.blog/ckfinder/userfiles/publics/files/18412537233.pdfIn PDF document text
    • https://pomtco.com/technical/files/file/gogaravosugo.pdfIn PDF document text
    • https://clicksnepal.grnca.org/img/files/files/nizokofarakopunob.pdfIn PDF document text
    • https://heuresromantiques.com/upload/files/86052418662.pdfIn PDF document text
    • http://swhwsolution.it/ckeditor-ckfinder-integration/uploads/files/rotidezipexulopaxugejosox.pdfIn PDF document text
    • https://www.gico.ge/ckfinder/userfiles/files/materubiwatilile.pdfIn PDF document text
    • https://kohphanganhotelandtour.com/userfiles/file/nolikalupalonumaxo.pdfIn PDF document text
    • http://avvocato-callegaro.it/public/file/655049133.pdfIn PDF document text
    • http://canshu.dlzj.net/upload/files/20210912153540584901.pdfIn PDF document text
    • http://rem-stroymont.ru/img/file/borugefabimepusufil.pdfIn PDF document text
    • http://fzcce.com/aimgs/uload/files/2622856986.pdfIn PDF document text
    • http://lnv-cnc.gr/userfiles/file/98700960023.pdfIn PDF document text
    • http://laibros.com/ckeditor/userfiles/files/vatubudaguwupevasupe.pdfIn PDF document text
    • http://podlahyadvere.sk/editor_uploads/system/files/87734843694.pdfIn PDF document text
    • http://suliaok.com/v15/Upload/file/202197714486559.pdfIn PDF document text
    • http://mathcountsoutreach.org/userfiles/file/vekenavakuzujebakukewijag.pdfIn PDF document text
    • http://e-park.es/img/uploads/files/89726273790.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_off0000d165.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD165 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000e977.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE977 16364 bytes
SHA-256: 07305444c7407173902dfdd7e313f8d8bc125f12299c99111a65be5d0d717a4f
font_02_sfnt_off000113ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x113EA 10880 bytes
SHA-256: d36bcba7f2a39f31c108a27755ffa13dd17e35495e7b02b11def749e8cb5bb1f