Malicious PDF — malware analysis report

Static analysis result for SHA-256 7111a7fb36645544…

MALICIOUS

PDF

74.8 KB Created: 2021-03-27 17:35:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a891b0038cb3ddd46e306d7effb36f6c SHA-1: 67af3e86a39143d5d9a4dbefeb6369b27a87ea15 SHA-256: 7111a7fb3664554496ac6f6c37ff99d1bbd2604d965574860e8c7a961eb622ea
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an external URI pointing to a suspicious domain, likely intended to host or redirect to a malicious payload. Although no scripts were explicitly extracted, the PDF structure and embedded URLs suggest it is designed to trick users into downloading further malware, fitting the profile of a phishing or trojan delivery mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://kuzutuzo.ru/award?keyword=toyota+production+system+case+study+pdf
    • http://turodes.iblogger.org/92315184135.pdf
    • http://eglo.club/energia_eolica_2019ixy5v.pdf
    • http://trelon.fun/24489225320lwi94.pdf
    • http://kufagexuwinu.22web.org/massachusetts_rmv_accident_report_form.pdf
    • http://dulexip.22web.org/assassin_s_creed_identity_apk_android.pdf
    • http://zumodaronomana.iblogger.org/gifuzenax.pdf
    • http://gooddevice-online.com/how_to_program_honeywell_thermostat_rth2300yvhnz.pdf
    • http://austritkfa.com/tivulosenumuwasowobojyogg8.pdf
    • http://avlto.best/sundance_spa_filter_chartkoo7i.pdf
    • http://salonapp.xyz/common_ft_john_legend_glory_mp4s19hx.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://770ad53b-b55e-4e58-b1eb-3709f41304f7.filesusr.com/ugd/98e298_ecaa045f767441329fd4970d6b9a5c21.pdf?index=true
    • https://ca6b24e6-01cd-4368-a310-1df05077a315.filesusr.com/ugd/11b39a_c139028abcd8416aa202d1ec183ca7d9.pdf?index=true
    • http://fepesori.rf.gd/enlaces_covalentes_ejercicios.pdf
    • https://1a9cd40a-f0d6-44d4-a143-19288280ca2b.filesusr.com/ugd/7a13df_55f9180403b348678f88e964a2fc6783.pdf?index=true
    • http://moganip.epizy.com/doxazosin_mesylate_davis.pdf
    • http://rebokomixuxoj.epizy.com/mibifa.pdf
    • https://b03e51a8-7171-48c0-94d6-e4c032e6f37f.filesusr.com/ugd/9421c8_ca8c441d730f4a15abce2ed69e3df585.pdf?index=true
    • https://e18e6c05-101e-4f41-9c4d-f518aea09dbb.filesusr.com/ugd/7972b3_0247e872ab6747d986b8dfb1d6c325dd.pdf?index=true
    • http://zalaxorenisev.epizy.com/guided_and_unguided_transmission_media.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_off0000d793.bin
be5139142b97a44441d58383c3248fc3ae5c5ff73839e45575910814269f51b4		 pdf-font-stream PDF embedded font (sfnt) at offset 0xD793 5204 bytes
font_01_sfnt_off0000e92c.bin
b0bdf1608a160296a3729204e38c1038f2af5898abcde4458bfd396396a461d9		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE92C 10824 bytes
font_02_sfnt_off00010e26.bin
ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10E26 4324 bytes

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