Malicious PDF — malware analysis report

Static analysis result for SHA-256 00236bddb00e0774…

MALICIOUS

PDF

72.6 KB Created: 2021-03-04 05:41:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: 0fdcdb51f442b6c5bf5c1bd009f9dfcb SHA-1: b4e71d15093ef413c2856f1d1346e429c8200de3 SHA-256: 00236bddb00e07745ed4f6ca1b9d7bb2a41619c284a34ecd144648793d992f9b
126 Risk Score

Malware Insights

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

This PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. It contains multiple embedded URIs, including one pointing to 'soxebez.ru', which is likely part of a phishing campaign. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' suggests the PDF is designed to host numerous links on disposable domains, further supporting a malicious intent to redirect users to potentially harmful sites.

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://soxebez.ru/wix?keyword=chem+lab+answers+online PDF link annotation
    • https://dirifulezidume.weebly.com/uploads/1/3/2/7/132740871/2795356.pdfIn PDF document text
    • https://cdn.sqhk.co/depifozopupe/X6Nuqhb/edge_of_dawn_seasons_of_warfare_mp3.pdfIn PDF document text
    • https://cdn.sqhk.co/lagusive/QKaGjbK/89658852558.pdfIn PDF document text
    • http://vujadijijevi.iblogger.org/what_is_the_definition_of_socio_cultural_factors.pdfIn PDF document text
    • https://buranujepexu.weebly.com/uploads/1/3/4/3/134339299/814.pdfIn PDF document text
    • http://jijimaxugixu.22web.org/bike_game_korbo.pdfIn PDF document text
    • https://jolibudowuw.weebly.com/uploads/1/3/4/5/134596284/noseseg_woxirixodivugi.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://ledivalefinaba.rf.gd/october_november_2019_calendar.pdfIn PDF document text
    • http://kikasipab.epizy.com/zumuroza.pdfIn PDF document text
    • http://wipurogo.rf.gd/examples_of_binding_and_loosing_prayers.pdfIn PDF document text
    • http://rasezejibaf.rf.gd/dr._neal_barnards_program_for_reversing_diabetes.pdfIn PDF document text
    • http://lisunamubeso.epizy.com/88120499591.pdfIn PDF document text
    • https://s3.amazonaws.com/laginekux/south_movie_2018_mp4_movies.pdfIn PDF document text
    • https://s3.amazonaws.com/baposivarabuj/t._j._hockenson_scouting_report.pdfIn PDF document text
    • http://bumitenebisi.epizy.com/how_to_prepare_process_flow_chart_in_word.pdfIn PDF document text
    • http://tagutibebik.rf.gd/hp_officejet_5610_all_in_one_price_india.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/audacity_software_free_for_pc.pdfIn PDF document text
    • http://xujekapowizi.epizy.com/sounan_desu_ka_episode_4.pdfIn PDF document text
    • http://gisaxuzarufol.epizy.com/1854953216.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_off0000e04e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE04E 5060 bytes
SHA-256: 844c160b0c16f5afdb3ad020d05b91b3fe1c15557d17c1ac1abbd24b0856367c
font_01_sfnt_off0000f15e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF15E 10388 bytes
SHA-256: 7b1bfd0b836bc5113eab66385996b33ffaed7e43e548291352c6a3352b7ceeae

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