Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e977b00ec002222…

MALICIOUS

PDF

72.7 KB Created: 2021-09-11 15:22:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: 3b3a6358f9594dfcca338f56e829c0b4 SHA-1: dd759be245468e286d8c01dc85916fe1c182e8ce SHA-256: 1e977b00ec002222b478f162fabb97e081f2f37b3c6b8ed2522648a553676b88
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and numerous external URIs, many of which point to disposable domains. The ML classifier and ClamAV detection strongly indicate malicious intent. The presence of embedded JavaScript suggests an attempt to execute code, likely to redirect the user to malicious sites or download further payloads.

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://irlanc.ru/uplcv?utm_term=how+to+check+internet+speed+on+android PDF link annotation
    • https://novitas.ro/files/49400114979.pdfIn PDF document text
    • http://digjamaica.com/app/webroot/files/31770333535.pdfIn PDF document text
    • http://beming.com/ressource/site-image/files/22268543257.pdfIn PDF document text
    • http://mackyz7automotive.com/js/upload/files/zosirefagu.pdfIn PDF document text
    • http://wo-kop.pl/userfiles/file/gerezewexalekex.pdfIn PDF document text
    • http://americasbestmanassas.com/uploads/files/57849654110.pdfIn PDF document text
    • http://mfahk.com/upload/files/nolomovuloruzim.pdfIn PDF document text
    • https://fontan-montag.ru/img/upload/57016275435.pdfIn PDF document text
    • https://dolupin.com/calisma2/files/uploads/57020415562.pdfIn PDF document text
    • https://www.baust.edu.bd/app/webroot/ckfinder/userfiles/files/virokivijalafigiwutilom.pdfIn PDF document text
    • http://luxcottage.ru/stroykamen/userfiles/file/rukumazij.pdfIn PDF document text
    • http://photopuzzle.net/userData/board/file/ninoluwikafowip.pdfIn PDF document text
    • https://systematix.pl/userfiles/file/77775667686.pdfIn PDF document text
    • http://www.mezmat.ru/ckfinder/userfiles/files/31841457329.pdfIn PDF document text
    • http://abwingssuffolk2.com/uploads/files/putulezo.pdfIn PDF document text
    • https://albertoangel.sinecsas.com/ckfinder/userfiles/files/rewatovopimizovaf.pdfIn PDF document text
    • http://xindeshiye.com/uploadfile/file///2021090613314127.pdfIn PDF document text
    • https://njshore.drinkpoint.com/uploads/files/tuwexusitaj.pdfIn PDF document text
    • https://koparieshorvathbusz.hu/files/file/94061505491.pdfIn PDF document text
    • http://olympicthesportshop.in/uploads/87431984341.pdfIn PDF document text
    • http://thessalonikiflights.com/files/files/58195232437.pdfIn PDF document text
    • http://le-lemniscus-incandescent.fr/ckeditor/upload/files/18093541853.pdfIn PDF document text
    • https://ms01bet.net/contents/files/dojidek.pdfIn PDF document text
    • https://aryaayur.com/wp-content/plugins/formcraft/file-upload/server/content/files/161303ca70b38a---ruvunexapesoziniboki.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_off0000b900.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB900 10732 bytes
SHA-256: 761b6adee3339c2e8831547d8595d0325c3ae9b3edc8cd593acbfe036e9a5175
font_01_sfnt_off0000d1a5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD1A5 16832 bytes
SHA-256: 054de76f2554a52e2ed28a8a90c2bf2d7fdf24ac949d2d653602fee9cc4a27d7
font_02_sfnt_off0000fccc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCCC 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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