Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdf9694757cfd525…

MALICIOUS

PDF

74.9 KB Created: 2021-09-08 17:26:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-09-23
MD5: f6e6288200c47082de4b067a2f9af549 SHA-1: d0613f90cf4ea043f12f6ed4662a45f6f93541c3 SHA-256: bdf9694757cfd52525b8b419087d3c84bef61cf7913dd0ce3031700d24f2f8a2
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm and contains embedded JavaScript. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9973

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://pixomot.ru/uplcv?utm_term=solving+simultaneous+equations+graphically+pdf PDF link annotation
    • http://pazzo.jp/js/upload/files/85331264770.pdfIn PDF document text
    • http://studiotecnicodambra.eu/userfiles/files/sosamaman.pdfIn PDF document text
    • http://tv-kitchen.ru/files/files/12110176392.pdfIn PDF document text
    • https://equinox-e.com/upload/files/pemawejuzobuxoxewifi.pdfIn PDF document text
    • http://xprchemical.com/upload/files/wubozubularubusu.pdfIn PDF document text
    • http://viettelhaiphong.me/data/dulieu/files/44436225886.pdfIn PDF document text
    • http://hk-bbc.com/upload/file/44689932081.pdfIn PDF document text
    • http://www.akutrans.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613104343e029---turamela.pdfIn PDF document text
    • http://zanethompson.com/userfiles/file/98866574166.pdfIn PDF document text
    • http://tbvshungviet.com/upload/files/74411874006.pdfIn PDF document text
    • http://www.anglometais.com.br/adm/Editor/ckfinder/userfiles/files/vakevakeni.pdfIn PDF document text
    • http://esenkardeslerinsaat.com/resimlerfiles/40148630708.pdfIn PDF document text
    • http://progettogeometra.it/userfiles/files/nipasaxixekeru.pdfIn PDF document text
    • http://hotelpenza58.ru/ckfinder/userfiles/files/zibufele.pdfIn PDF document text
    • http://e-baze.lv/images/site/file/3555309220.pdfIn PDF document text
    • https://kingwrapcarspa.com/upload/files/95151054935.pdfIn PDF document text
    • http://anael.fr/fckeditor/userfiles/file/nojozat.pdfIn PDF document text
    • https://gestionarival.com/userfiles/file/vemorira.pdfIn PDF document text
    • http://t-eamplus.de/web/editor/files/pevevurezexuvasodigizok.pdfIn PDF document text
    • https://iohrp.org/f_files/files/jenunelifosomazozo.pdfIn PDF document text
    • http://www.egavilanes.com/ckfinder/userfiles/files/31024319131.pdfIn PDF document text
    • http://pantipplaza.com/userfiles/file/xopoverafezu.pdfIn PDF document text
    • http://erdbau-rauch.at/15504775226.pdfIn PDF document text
    • https://ms02bet.net/contents/files/10119397725.pdfIn PDF document text
    • http://metabolitplus.ru/files/file/mosobuxit.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_off0000c019.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC019 11568 bytes
SHA-256: 07e0ce2eb6c2a4793a02ab6f3581cded6876e879b9bd6f73752b7d3661f5aebf
font_01_sfnt_off0000dad8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAD8 16744 bytes
SHA-256: eaa98ffe8f510ff9fd8bc507542b3f62cd7891a149768ffd849d45ee59fd0969
font_02_sfnt_off0001058b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1058B 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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