Malicious PDF — malware analysis report

Static analysis result for SHA-256 e83c9621b36f507e…

MALICIOUS

PDF

78.8 KB Created: 2021-03-01 15:25:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 01f6f5532e438ad875f6003a28a562d0 SHA-1: 28f3cc798d9a4a4df0ede6f52ce26ca15791cffd SHA-256: e83c9621b36f507e7545bd2714f664f59b29e16488ad52bdf467c505aad3f96c
96 Risk Score

Malware Insights

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

The PDF file was flagged as malicious by a machine learning classifier and ClamAV, indicating a high likelihood of malicious intent. It contains an embedded URI pointing to 'https://jumiwimov.ru/123?utm_term=sunsetter+installation+near+me', which is likely a phishing lure. The document body, though heavily obfuscated, contains text related to 'Sunsetter installation near me', reinforcing the phishing pretext.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/123?utm_term=sunsetter+installation+near+me
    • https://cdn.sqhk.co/dexizajifu/igkrzjj/wezuxuvikanodepeginego.pdf
    • http://bomepufibawil.scienceontheweb.net/dell_optiplex_3020_wont_power_on.pdf
    • http://kipokefurur.mygamesonline.org/by_the_river_piedra_i_sat_down_and_wept_summary.pdf
    • https://cdn.sqhk.co/judawube/hjPSWib/ufc_fight_night_card.pdf
    • http://penageli.getenjoyment.net/83902842024.pdf
    • https://cdn.sqhk.co/wofunukasu/9tTgchh/age_calculator_free_download_for_pc.pdf
    • https://cdn.sqhk.co/fuzokikili/fl8ilha/zombieland_2_watch_online_dailymotion.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/faduxodiwo/fudesu.pdf
    • https://s3.amazonaws.com/widetunipet/opera_browser_64_bit_windows.pdf
    • https://s3.amazonaws.com/zumomasugipeno/72666437291.pdf
    • http://palakojum.rf.gd/zamirulogefovubobike.pdf
    • http://kozogasivufi.myartsonline.com/67793581553.pdf
    • https://s3.amazonaws.com/fexuror/worksheet_on_tenses_for_grade_8_icse.pdf
    • http://lokimutopilar.epizy.com/53764535371.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e847.bin
8e687bcff8eb4ff4a8ccc0807c0113d54a8c024745c2d1e07871c69945553109		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE847 4816 bytes
font_01_sfnt_off0000f87a.bin
10db269dd53b522ed32e6d9f7bfe2ad7ec161b450c875f6090a972692ee95b5f		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF87A 11600 bytes
font_02_sfnt_off00011fec.bin
1158d95dac44631f497756703988ba3645251422e7ff0015d3fca430225e7c3e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11FEC 4324 bytes

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