Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f85bf76eaedd4b2…

MALICIOUS

PDF

76.7 KB Created: 2021-02-16 14:25:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 474bf37bc776acc4fb3f12db901527ec SHA-1: ff68211f9cda2547ca530689ff61c2632588b32b SHA-256: 2f85bf76eaedd4b2272a60f1d34d5534e584609f7866d55af507a273562d1a36
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains numerous embedded URLs, with one specifically identified as a phishing lure related to 'Maximum Ride the movie 2'. Heuristics indicate it's a link farm on disposable hosting, and ML classifiers and ClamAV strongly flag it as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it's designed to redirect users to malicious sites, likely for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://seumenha.ru/strik?utm_term=maximum+ride+the+movie+2 PDF link annotation
    • https://vukojudal.weebly.com/uploads/1/3/5/3/135317211/9953297.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413578/normal_6005c0434fc68.pdfIn PDF document text
    • https://fepexugoroba.weebly.com/uploads/1/3/4/4/134469665/9717341.pdfIn PDF document text
    • https://bikujezojodu.weebly.com/uploads/1/3/4/5/134587809/404b7e8e4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pigozezidum.rf.gd/consolations_of_philosophy_sheet_music.pdfIn PDF document text
    • http://pitowurojagit.epizy.com/businessman_telugu_movie_video_songs_free.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/wozazanigixomegijuj.pdfIn PDF document text
    • https://s3.amazonaws.com/nigimul/google_sheets_templates_timeline.pdfIn PDF document text
    • http://wuxejosijaja.epizy.com/zoditinugajusomep.pdfIn PDF document text
    • http://gezibetaw.epizy.com/jufumivedazakipin.pdfIn PDF document text
    • http://tegumebedizeso.epizy.com/genius_binary_options_indicator_free.pdfIn PDF document text
    • http://zawomebi.epizy.com/wanukomadag.pdfIn PDF document text
    • http://wijuweluxevem.rf.gd/curriculum_guide_grade_10_cookery.pdfIn PDF document text
    • https://s3.amazonaws.com/rozebofukixus/android_room_typeconverter_kotlin.pdfIn PDF document text
    • http://kixixiwibatogit.epizy.com/free_body_of_lies_full_movie.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ef9e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEF9E 5120 bytes
SHA-256: 87f711d7fb4c48381461bbb8ee6ebd1bd5d9d6e2e4e2694541029d287e8dc9e2
font_01_sfnt_off000100f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x100F2 10752 bytes
SHA-256: fa56d3fb93bb0dd689aff2b62ec6b4ccada354f938855e77b9cd2b77fbf62fab

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