Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ed30c05787b4a79…

MALICIOUS

PDF

77.7 KB Created: 2021-04-04 21:21:39 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 35600ef7915591c9ea07b45110b9dde8 SHA-1: d6e9b01cbc8a7fccd03dd70f9c4f2612f908eafd SHA-256: 5ed30c05787b4a792e7af4815b66aa734563e7fcadc0e4578615dacd9aa64531
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, specifically as a phishing trojan. It contains an embedded URL that, when accessed, leads to a PDF file and references a popular game update, suggesting a phishing or malware distribution lure. The presence of embedded URLs and the nature of the detection indicate a likely attempt to trick users into downloading or executing further malicious content.

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://pelibifir.ru/wix?keyword=clash+of+clans+update+apk+2019
    • http://carishr.com/jensen_vx7020_firmware4w239.pdf
    • http://songkfrk.site/date_format_regex_javascriptvin4k.pdf
    • http://hookup154.online/samujagivudepap1pssj.pdf
    • http://mon-compte-cmb.best/2007_chevrolet_impala_ss_sedan_4dml1ww.pdf
    • http://cesaregaspari.com/fabepereveribemorofijemi0wzj.pdf
    • http://creditactive.info/brave_frontier_friday_dungeon_karmas7x4z.pdf
    • http://geekcods.com/how_to_computer_code_for_beginnersnegzb.pdf
    • http://qrettalq.online/593687789513171f.pdf
    • http://hookup754.fun/graphing_two_variable_inequalities_worksheetb5sjo.pdf
    • http://changepass.online/ukulele_strumming_patterns_4_4d4fg6.pdf
    • http://ag-management.space/amino_para_pokemon_en_espanolz15h1.pdf
    • http://fineagencyy.com/are_the_jlab_go_air_waterproof96iy1.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://79ab8074-8148-4faa-9219-f6cdfa35bc15.filesusr.com/ugd/99e004_3ce9ac55eb1c45c0a7ca615eb62664e8.pdf?index=true
    • https://e9155d39-0f7d-4366-9ee8-34e17fe3d773.filesusr.com/ugd/9e05b8_fda137944e844fce9efa8b50664637a9.pdf?index=true
    • https://5d94d51b-2702-4b64-8df3-eadd022f3edc.filesusr.com/ugd/2ddd39_03c403564ba74524b984913b02071d58.pdf?index=true
    • https://s3.amazonaws.com/xufujofaleki/serunewememema.pdf
    • https://s3.amazonaws.com/vedexajawo/psycho_robert_bloch_amazon.pdf
    • https://ca3ec1ac-6ff7-4c8f-ae0f-86a30d86e335.filesusr.com/ugd/3615fb_aa33a5ed1bfe46058cb984eff551ab7b.pdf?index=true
    • https://c84d532c-3b33-47d6-96aa-4134a1164eb1.filesusr.com/ugd/6d45f6_bb67bc98848b43c3a2ce90da57402f80.pdf?index=true
    • https://s3.amazonaws.com/bededuxotulapil/43987229533.pdf
    • https://9849c7ec-8b19-4b81-9a64-db2537ea7c40.filesusr.com/ugd/97b1c0_fe2156f69c104df785b71462bf986cd9.pdf?index=true
    • 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_off0000f0b4.bin
e0bb9203c6461f97a7dedcf426061ff4b657391f172b260453a596b46e64b5bd		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B4 5600 bytes
font_01_sfnt_off000103c0.bin
5d340748a2f8d4350399e6d7748e378738105368673671d11adfc5cd65020e71		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103C0 10652 bytes

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