Malicious PDF — malware analysis report

Static analysis result for SHA-256 fbe141e52f5fed06…

MALICIOUS

PDF

98.9 KB Created: 2021-03-30 05:18:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-30
MD5: 5e23770fb966306444d983735dd0b983 SHA-1: ed73db65be743f0d438d35cd597e178502a048b9 SHA-256: fbe141e52f5fed06b3580605fc62ee37bc412ca4bc10f7c55260c5de1a60d5c8
156 Risk Score

Malware Insights

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

The PDF contains numerous external links, many of which are part of a link farm designed to manipulate search engine results. The primary URL, 'https://dugedepap.ru/wix?keyword=tu+46+unblocked+games+for+peasants', suggests a lure related to games. The ClamAV detection and ML classifier strongly indicate malicious intent, likely phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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 contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://dugedepap.ru/wix?keyword=tu+46+unblocked+games+for+peasants PDF link annotation
    • http://curvepreloved.com/achievable_performance_meaning703c7.pdfIn PDF document text
    • http://kuvuradivikosef.iblogger.org/weraporusokegato.pdfIn PDF document text
    • http://kakaxazirobolob.iblogger.org/olympus_om_2_tutorial.pdfIn PDF document text
    • http://lusejifunod.22web.org/lanubevutaru.pdfIn PDF document text
    • https://wenabavur.weebly.com/uploads/1/3/1/3/131379405/poravuxatigawu_binixugolo.pdfIn PDF document text
    • http://conicppjry.bid/3198385831d0lnt.pdfIn PDF document text
    • http://vigastlens.xyz/do_you_regain_spell_slots_after_a_short_restns036.pdfIn PDF document text
    • http://qwonder.space/mankiw_macroeconomia7l9jo.pdfIn PDF document text
    • http://itrom.fun/how_to_do_calligraphy_with_a_normal_pen_for_beginners1pnp7.pdfIn PDF document text
    • http://xopijodujakik.22web.org/33871878500.pdfIn PDF document text
    • https://nasabera.weebly.com/uploads/1/3/4/4/134447265/xamapumaw-sefolun.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://436010f1-0dd7-4950-aec0-3bdf337573e8.filesusr.com/ugd/5a4c69_8156a1d6ae074062b81e695baa5b0c68.pdf?index=trueIn PDF document text
    • https://1e16f6d7-285b-4488-bf07-d3e24ac90e20.filesusr.com/ugd/417718_eec27d70397e46e793a0faa4ec3e8a60.pdf?index=trueIn PDF document text
    • https://167c8e7b-8160-49a2-a88e-f26749d647c8.filesusr.com/ugd/1ad47d_5b0f2f98ed0e4a6e99953dedfebe1609.pdf?index=trueIn PDF document text
    • http://tosopipates.epizy.com/90614873930.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/snm_guidelines_lung_scintigraphy.pdfIn PDF document text
    • https://s3.amazonaws.com/gimufesajo/bin_bash_scripting_language.pdfIn PDF document text
    • https://s3.amazonaws.com/dikomavomem/49528969684.pdfIn PDF document text
    • https://s3.amazonaws.com/fosawef/how_to_make_margaritas_in_a_margaritaville_machine.pdfIn PDF document text
    • https://b5f62e6e-b620-4b0e-90dd-fa81fc7fb5c2.filesusr.com/ugd/18d815_b2529701e07d4962affe2a05cddb708b.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/tasufagijaremo/frequently_asked_interview_questions_with_best_answers.pdfIn PDF document text
    • https://068ba8bc-08b0-4b68-8151-f3c59c7a5775.filesusr.com/ugd/5a4aad_d38031a2dd0a46ec857f329e2bde0031.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/mawesenasijoser/orange_movie_audio_songs_telugu.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00012af6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12AF6 5872 bytes
SHA-256: 05e58ef093924e58f07f2f7e062d4d4eca27d0997a4edc790f04e5675395d60b
font_01_sfnt_off00013ee1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13EE1 12528 bytes
SHA-256: 3b61ddf9f9793890f6d5ef5fa8d61c86c74e63df4f8ae90d7fd7a7e2d90eb8c6
font_02_sfnt_off0001684c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1684C 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501

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