Malicious PDF — malware analysis report

Static analysis result for SHA-256 e1992d0b08ce0250…

MALICIOUS

PDF

90.1 KB Created: 2021-03-22 13:59:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 99e8e19d049e3fa8ab67c30b336b762a SHA-1: dbb3022bcd68aa72401df4f7d8107cab4114c88b SHA-256: e1992d0b08ce02503d3f18711597e90d1e6b98f4fe74b154602d35091af66f77
96 Risk Score

Malware Insights

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

The PDF file was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to 'jumiwimov.ru', which is presented in the document body as a link to watch a movie. This suggests a social engineering tactic to trick the user into visiting a malicious site. No scripts were extracted, but the presence of external URIs and the ML/ClamAV detections strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jumiwimov.ru/strik?utm_term=monster+vs+aliens+2+full+movie+in+hindi+watch+online
    • http://gamuxiwami.getenjoyment.net/pdf_xchange_editor_no_watermark.pdf
    • https://cdn.sqhk.co/divononawe/Bgib2Kz/29502995849.pdf
    • https://cdn.sqhk.co/jesupasuzoku/anXggle/v_movie_songs_lyrics_ringtone_download.pdf
    • http://borejukeluteva.mygamesonline.org/hdfc_bank_aptitude_test_questions_and_answers.pdf
    • http://jigapenufi.medianewsonline.com/sogaturafuzonoko.pdf
    • http://tevaruv.sportsontheweb.net/a_wife_s_cry.pdf
    • http://sabumow.mygamesonline.org/dojugafimajexofugife.pdf
    • http://fesalasan.mygamesonline.org/base64_encode_javascript.pdf
    • https://luxaxezasu.weebly.com/uploads/1/3/1/3/131398230/8dfa0a.pdf
    • http://rusakadovub.sportsontheweb.net/argumentation_and_debate_book.pdf
    • http://gojavodevagajuw.mygamesonline.org/buggy_barracuda_plans.pdf
    • https://cdn.sqhk.co/makubeku/b5BpGgd/db_legends_how_to_get_multi_z_power.pdf
    • http://rilisibutetibe.22web.org/what_does_the_bible_say_about_sowing_financial_seeds.pdf
    • https://pevivifigevesiw.weebly.com/uploads/1/3/5/3/135315965/resalipidekipozuxago.pdf
    • https://tujowijide.weebly.com/uploads/1/3/0/9/130969571/fosevaw.pdf
    • http://tamasolesodaj.mypressonline.com/9631476812.pdf
    • https://cdn.sqhk.co/xogudililavo/ibOChdw/anger_of_stick_3_download_apk.pdf
    • https://cdn.sqhk.co/vawapisoxe/cgeijja/new_bollywood_ringtone_2018_pagalworld.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/xoguwavosuje/por_que_o_ingls__considerado_a_lngua_franca.pdf
    • https://s3.amazonaws.com/zumomasugipeno/beautiful_flower_butterfly_pictures.pdf
    • https://s3.amazonaws.com/jojitagifuva/lomilemolimifibiwosaw.pdf
    • http://roniderekatitim.rf.gd/argumentative_essay_against_school_uniforms.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000122c5.bin
5c0e9bc926a0bf315b97caab2e1a7bf8617906a9c8f6dbc070f35b90d3dcb8f0		 pdf-font-stream PDF embedded font (sfnt) at offset 0x122C5 5552 bytes
font_01_sfnt_off0001359c.bin
529a1626262b626b0aa2b14331621152cbbc19d42bcf4d5ca1490b9ccb510221		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1359C 11068 bytes

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