Malicious PDF — malware analysis report

Static analysis result for SHA-256 210ecf65e8991f8e…

MALICIOUS

PDF

70.8 KB Created: 2021-02-27 04:31:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 606b882028c61eb3f31902e61940a30b SHA-1: 69dda54c2ddf5045f87d54fb2a8ed55817de623a SHA-256: 210ecf65e8991f8eb954d6f135d41cc14a18970dc59a9daea64d18640cc189ea
126 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs, with one prominent URL pointing to a 'psychic self defense book' lure, suggesting a phishing or scam attempt. The PDF structure and embedded links indicate it's designed to redirect users to potentially harmful external content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://golowaki.ru/strik?utm_term=psychic+self+defense+book PDF link annotation
    • https://cdn.sqhk.co/jufenakajo/sicjjgf/zombie_2_movie_cast.pdfIn PDF document text
    • https://ludurodeb.weebly.com/uploads/1/3/4/8/134852143/7902841.pdfIn PDF document text
    • https://cdn.sqhk.co/faroziwe/kZjfjdc/video_status_maker_app_download.pdfIn PDF document text
    • https://dagaroxir.weebly.com/uploads/1/3/5/9/135973008/9647391.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407818/normal_5ffa1d76003df.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497687/normal_601727e89ede3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4411500/normal_5fdd098cece6f.pdfIn PDF document text
    • https://cdn.sqhk.co/dojidavos/ibjfhf9/6018373123.pdfIn PDF document text
    • http://sevagawos.getenjoyment.net/sanoja.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417033/normal_5ff76e0e759e9.pdfIn PDF document text
    • https://jugujepatuw.weebly.com/uploads/1/3/4/9/134900825/nomexu-kodobogixozux-mutozikifafage-bekeb.pdfIn PDF document text
    • http://pixunune.sportsontheweb.net/61288825565.pdfIn PDF document text
    • http://fukoramilani.22web.org/naleziga.pdfIn PDF document text
    • http://sujabupinoda.scienceontheweb.net/tofedukidusulotixetaxawe.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://tumizasikoxef.rf.gd/56914476784.pdfIn PDF document text
    • https://s3.amazonaws.com/zufaxepixiguxax/pneumonia_guidelines_aap.pdfIn PDF document text
    • http://rebagada.rf.gd/how_to_download_adobe_reader_dc_pro.pdfIn PDF document text
    • http://kewetanetoza.atwebpages.com/english_grammar_worksheets_for_grade_2.pdfIn PDF document text
    • https://s3.amazonaws.com/xufoxorog/59026157854.pdfIn PDF document text
    • https://s3.amazonaws.com/dugibabafod/zojezobebolujef.pdfIn PDF document text
    • http://bumumewevebav.epizy.com/23934591179.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_off0000d7fd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7FD 5108 bytes
SHA-256: 5907253ac6ae14d20077cb3502cbe9d561a5929df34ade56c91c0bd139cf473a
font_01_sfnt_off0000e96c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE96C 10720 bytes
SHA-256: de8814d4a498869266c48e7f82f2604a5c1b14cd19cee4fefe279c62fa778728

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