Malicious PDF — malware analysis report

Static analysis result for SHA-256 69fd2724bf8e2008…

MALICIOUS

PDF

81.8 KB Created: 2021-03-20 18:03:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: c352fe03e28d21c265231ee84c012bd0 SHA-1: ed63ac1a7ad50b8557c91af433a242ced2dc6d33 SHA-256: 69fd2724bf8e2008052dffc9cc384042b97ac55bc68bd7aea82db1e8d322745b
126 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by ML classifiers and ClamAV, indicating a phishing or malware distribution attempt. It contains numerous embedded URLs, with a primary suspicious URL being https://soxebez.ru/strik?utm_term=game+of+thrones+books+ranked. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the PDF is designed to host many links on disposable domains, further supporting a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://soxebez.ru/strik?utm_term=game+of+thrones+books+ranked PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4370309/normal_5fd069cc80063.pdfIn PDF document text
    • https://nalodewemutut.weebly.com/uploads/1/3/1/1/131164475/tisobe_jewiropij_tagapaderexu.pdfIn PDF document text
    • https://wabezapodila.weebly.com/uploads/1/3/1/4/131437306/4901191.pdfIn PDF document text
    • https://mebagotu.weebly.com/uploads/1/3/4/4/134444887/1295776.pdfIn PDF document text
    • https://cdn.sqhk.co/nisugewameru/hfF7U3H/1359889936.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470836/normal_605472f0aed63.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413848/normal_5fe446c3dac0b.pdfIn PDF document text
    • http://gevazuvunurodum.22web.org/21697995836.pdfIn PDF document text
    • https://sexeduju.weebly.com/uploads/1/3/5/3/135327292/a6728a.pdfIn PDF document text
    • https://cdn.sqhk.co/wenoxavawo/jjfghja/determiners_worksheet_for_grade_4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4406455/normal_603406a16dd50.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410443/normal_5ff1833861a24.pdfIn PDF document text
    • https://voxipomawo.weebly.com/uploads/1/3/1/3/131379395/dovodelidide_wigesam.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4446511/normal_6000651bed8d7.pdfIn PDF document text
    • https://cdn.sqhk.co/xamowepap/gjgeeEo/the_explosive_child_ross_greene.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/jagux/sheet_mask_innisfree_untuk_kulit_berminyak.pdfIn PDF document text
    • https://s3.amazonaws.com/rodigapigeta/18073124662.pdfIn PDF document text
    • https://s3.amazonaws.com/vezumobigodub/up_board_high_school_marksheet_2019.pdfIn PDF document text
    • http://gunubaxerilol.epizy.com/atonement_book_genre.pdfIn PDF document text
    • http://kuxadob.rf.gd/visuwelofexosotinepakizu.pdfIn PDF document text
    • https://s3.amazonaws.com/rovuweraja/que_es_movimiento_uniforme_en_quimica.pdfIn PDF document text
    • https://s3.amazonaws.com/bulikowexunepov/furuloragowuxifatuxek.pdfIn PDF document text
    • http://divonuniset.epizy.com/how_long_do_you_boil_sweet_potatoes_to_get_the_skin_off.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_off0001024c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1024C 5348 bytes
SHA-256: 9f7a37bd8f0e5971cfc5b8195d237099d356e61b633d15b8432c298d5cb2e74e
font_01_sfnt_off00011451.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11451 10964 bytes
SHA-256: b60caf704bf4acf354454c4578b8624e29a63fe7bec5f105b73727021741d03e

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