Malicious PDF — malware analysis report

Static analysis result for SHA-256 4e94b2ac2edf7ab4…

MALICIOUS

PDF

80.6 KB Created: 2021-10-05 00:02:06 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25
MD5: e6866f256655cf8254460f9f1c8d9ac3 SHA-1: 03dd01a1d0cd355c0ceeaa9e4d743b2e77804368 SHA-256: 4e94b2ac2edf7ab42fe3c207d7b167bf1f662dc68fab34bec0970641734a2c83
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The sample was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains numerous external URLs, many of which are structured as link farms on disposable hosting, suggesting a phishing or redirection scheme. The PDF's structure and embedded URIs point towards an attempt to direct users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9972

Heuristics 5

  • 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.
  • 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=children%27s+drawings+in+real+life PDF link annotation
    • http://makassitools.com/userfiles/file///fadosebowipa.pdfIn PDF document text
    • https://actor-conseil.com/files/file/zivikatep.pdfIn PDF document text
    • http://haohanlegend.com/Uploadfiles/files/73198677232.pdfIn PDF document text
    • http://dharmapuridiocese.com/svnprojects/DHD/Source/images/files/bamidugobotefelet.pdfIn PDF document text
    • https://mytekas.com/UserFiles/file/bomadivijudexidi.pdfIn PDF document text
    • https://www.mds-horizons.com/upload/files/97363233510.pdfIn PDF document text
    • http://radiosalsa.fr/php/rs/filesupload/file/tosiwa.pdfIn PDF document text
    • https://toyotaautobody.com/ckfinder/userfiles/files/votevedenapavezidos.pdfIn PDF document text
    • http://musicfriend.vn/public/default/ckeditor/files/20139251145.pdfIn PDF document text
    • http://parbatsamajjapan.com/img/files/files/xaxasowar.pdfIn PDF document text
    • http://uniondeautoescuelas.com/wp-content/plugins/formcraft/file-upload/server/content/files/16153c9a8e62bd---felurelaw.pdfIn PDF document text
    • http://marketingnews.fr/images/file/jagadu.pdfIn PDF document text
    • http://fgosvo.ru/files/files/47108618105.pdfIn PDF document text
    • https://aglogistics-bo.net/userfiles/file/bukixonisaduxefekinezixun.pdfIn PDF document text
    • http://riggi.ru/userfiles/file/porimi.pdfIn PDF document text
    • https://lnpro.in/ckfinder/userfiles/files/97997402801.pdfIn PDF document text
    • https://southernwashpros.com/nbloom/fckuploads/file/wuponubaliw.pdfIn PDF document text
    • https://angkagenap.com/contents/files/54757902578.pdfIn PDF document text
    • http://parentini.it/userfiles/files/88631713711.pdfIn PDF document text
    • https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/fa58fb6aa946d29d020d056ff841887d/94244688547.pdfIn PDF document text
    • http://koreabulk.net/userData/board/file/rarixexajajojoletorovu.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_off0000d209.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD209 10568 bytes
SHA-256: b2b82b1f4dd7832659e8b9e5e71f255eadb73c81f753271fd485eb69e8d44500
font_01_sfnt_off0000e9ed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9ED 19672 bytes
SHA-256: 10eaabeef601a15959b1c7fe68fd6112b334521e3e4dba30d97642ac36a44f87
font_02_sfnt_off00011d0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11D0E 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1

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