Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c054552f3bf7bda…

MALICIOUS

PDF

79.8 KB Created: 2021-03-02 20:50:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 802121fd75f5e6d1a48dec3fa570373e SHA-1: ba2b309c6a049da241accecd08f6b6784abfdb94 SHA-256: 9c054552f3bf7bdac65e51a07d3880ca558244360cc90cebd8409ceda84a3419
96 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 an embedded URI pointing to 'https://midufefew.ru/wix?keyword=system+bus+definition', which is a strong indicator of a phishing or malware distribution attempt. The PDF structure and embedded URLs suggest it's designed to trick users into visiting a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://midufefew.ru/wix?keyword=system+bus+definition
    • http://j3vnci4.xyz/cancionero_guitarra_rock6rvn1.pdf
    • http://paypallsecurity.com/is_diablo_3_switch_worth_itn7moe.pdf
    • https://gedinabudi.weebly.com/uploads/1/3/0/8/130814056/zafopowixidu-dijitirel.pdf
    • http://vir-tus.com/watchmen_hollywood_tamil_dubbed_movie_download_tamilrockersfvyfs.pdf
    • https://sanegirorasatu.weebly.com/uploads/1/3/5/4/135400744/9b2f04a523db.pdf
    • https://static.s123-cdn-static.com/uploads/4485578/normal_60041aaf2ef29.pdf
    • https://cdn-cms.f-static.net/uploads/4495392/normal_6010859f9a991.pdf
    • https://static.s123-cdn-static.com/uploads/4425484/normal_5ff0e140107e9.pdf
    • https://static.s123-cdn-static.com/uploads/4426945/normal_5ffbddc8a67d4.pdf
    • http://wersita.space/palozojajafonanuvosekeca0kz.pdf
    • http://pumba-timon.space/spongebob_sponge_on_the_run_full_movie4j4mq.pdf
    • http://my-favshopf.online/flowers_for_algernon_characters_summaryx5ie4.pdf
    • http://waxinexedodupij.22web.org/gorejipo.pdf
    • http://pressit.fun/cartoon_network_games_50_in_1_downloadg0qvb.pdf
    • https://luragelekow.weebly.com/uploads/1/3/4/3/134377287/1716504.pdf
    • http://thrivewebs.com/34728378481w0p3x.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://xevorerokune.epizy.com/42527723627.pdf
    • http://sisawujeza.rf.gd/77065209804.pdf
    • https://s3.amazonaws.com/midizaxopazeji/76960228513.pdf
    • http://teruwizirazi.rf.gd/31981929468.pdf
    • https://s3.amazonaws.com/wazagidonux/answers_letter_crossword_clue.pdf
    • https://s3.amazonaws.com/safago/android_device_manager_lock_screen_bypass.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_off0000ee5a.bin
b0c599f40939b4a5f9eba5467bd38a2629f3251565fc62b11fa034ea5dbd9359		 pdf-font-stream PDF embedded font (sfnt) at offset 0xEE5A 4940 bytes
font_01_sfnt_off0000ff11.bin
fc36dc84111cdf67dd45da81d891de2a7498943e4af8a80897b20625841ebee2		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFF11 10676 bytes
font_02_sfnt_off00012389.bin
d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12389 4324 bytes

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