Malicious PDF — malware analysis report

Static analysis result for SHA-256 30f8043358b42b28…

MALICIOUS

PDF

88.0 KB Created: 2021-09-19 02:55:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14
MD5: f8172a2558e6120a8cdfe58062412096 SHA-1: 98e7fb063a5751c056e5bf27d458a5df8e470321 SHA-256: 30f8043358b42b282d96de09e45e3c2c9bb9e88c47350692977f260b7d5c3b4f
134 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and a large number of external URIs, many of which point to disposable hosting. The ML classifier and ClamAV detection strongly indicate malicious intent, likely for phishing or distributing further malware. The embedded JavaScript is likely responsible for redirecting users to these malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9948

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://oniceh.ru/uplcv?utm_term=after+movie+free+online+watch PDF link annotation
    • http://dga.gr/ILC/img/file/lesirakugibolemejefoni.pdfIn PDF document text
    • http://xinyuemu.net/assets/202109/files/20210912173452647807.pdfIn PDF document text
    • https://www.hospedeagora.com.br/wp-content/plugins/super-forms/uploads/php/files/r17ktvehkatnkgrbg8ls8rlmdm/natonelemamewoda.pdfIn PDF document text
    • https://chachachat.info/js/ckfinder/userfiles/files/59100998175.pdfIn PDF document text
    • http://cpgny.com/userfiles/files/tijenipinipawiligosiko.pdfIn PDF document text
    • http://hairtransplantmangalore.com/uploaded_files/userfiles/files/gotorimirudoxexid.pdfIn PDF document text
    • https://cursosadistanciayonline.com/medios/files/17229319037.pdfIn PDF document text
    • https://xtrafitcoaching.com/www/images/files/kiloberixizur.pdfIn PDF document text
    • https://gujaratisamajparis.org/upload/files/62436071928.pdfIn PDF document text
    • https://alpinashop.rudy-ra.com/files/33697031462.pdfIn PDF document text
    • https://psychologgia.pl/Upload/file/75047258737.pdfIn PDF document text
    • http://kxxbs.com/uploadfiles/file/a/novigiwumo.pdfIn PDF document text
    • http://balade-pierry.fr/userfiles/file/bogolekaruwim.pdfIn PDF document text
    • https://bushregenerators.com/userfiles/files/30480506232.pdfIn PDF document text
    • http://irpuyesh.com/cache/fck_files/file/fixeberutokalebud.pdfIn PDF document text
    • https://ecohort.com/userfiles/files/47525728142.pdfIn PDF document text
    • https://nutritie-metabolism-sanatate.ro/app/webroot/files/userfiles/files/1879792696.pdfIn PDF document text
    • https://ourguarantees.com/userfiles/file/36580147491.pdfIn PDF document text
    • http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/16135e37a697cc---78405856861.pdfIn PDF document text
    • http://karlsbach.de/userfiles/files/zetofepu.pdfIn PDF document text
    • https://chongtham68.com/app/webroot/uploads/files/woxoxawativawelujefoba.pdfIn PDF document text
    • https://nhabe.com.vn/ckfinder/userfiles/files/ganewenovavo.pdfIn PDF document text
    • http://hongsung114.com/files/fckeditor/file/59748558929.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_off0000f515.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF515 10564 bytes
SHA-256: 13aca3a45938341aed4ea4405e165bce3ef346e53b9b75cf903870e03351b3ae
font_01_sfnt_off00010d07.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D07 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_02_sfnt_off00012519.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12519 17740 bytes
SHA-256: 82b9f5ea29f553742d1a34aab7aa4231104a2440083fbf9ce7069e99b70a123f

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