Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ad7b1bd36a57e3d…

MALICIOUS

PDF

75.0 KB Created: 2021-02-15 15:52:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: a6f35acf5d775c1c6067145680d64368 SHA-1: eeeb284d93d88b5180a0152bf86a7b5d040c8e9d SHA-256: 6ad7b1bd36a57e3df10f02118af7a0a9f928798e04cde20d20ddc1fcfc739c08
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that directs users to a site offering a 'widget apk download'. This, combined with the ML classifier and ClamAV detection, strongly suggests a phishing or malware distribution attempt. The PDF structure itself does not contain executable scripts, but the presence of external links points to a social engineering tactic to trick users into downloading malicious content.

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://leonvi.ru/wix?keyword=widget+apk+download PDF link annotation
    • http://ragaliteres.iblogger.org/75942786577.pdfIn PDF document text
    • http://kuxasubofutako.iblogger.org/parse_error_fix_using_apk_editor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4446770/normal_5fe8c91c13581.pdfIn PDF document text
    • http://fosufupivufup.66ghz.com/55062394783.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tobaziw/android-_1_mod_games_sniper_3d.pdfIn PDF document text
    • https://s3.amazonaws.com/zetituri/il_2_battle_of_stalingrad_free.pdfIn PDF document text
    • http://gobofitis.epizy.com/1511678644.pdfIn PDF document text
    • http://vowatul.rf.gd/85098820129.pdfIn PDF document text
    • https://s3.amazonaws.com/rodakarugupoko/8222753434.pdfIn PDF document text
    • https://s3.amazonaws.com/punurum/34898056.pdfIn PDF document text
    • http://zusobudem.epizy.com/naming_hydrates_worksheet_6_answers.pdfIn PDF document text
    • http://lepefefila.epizy.com/sopagagigoxik.pdfIn PDF document text
    • https://s3.amazonaws.com/duzexefemosaxe/798698283.pdfIn PDF document text
    • https://s3.amazonaws.com/bifadiwuwileji/wotarazinad.pdfIn PDF document text
    • https://s3.amazonaws.com/nademopor/bomberman_fantasy_race_ps1.pdfIn PDF document text
    • http://danobefaxejo.rf.gd/lamopigopo.pdfIn PDF document text
    • http://vanudedu.epizy.com/wanted_poster_template_in_french.pdfIn PDF document text
    • http://gagelenobom.epizy.com/62553461330.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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e904.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE904 5020 bytes
SHA-256: 60c8e94194a60d234e56c56063465599847605b96b556c13805f2c21436d47f7
font_01_sfnt_off0000fa4f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFA4F 10652 bytes
SHA-256: ce81d7b9d897d06bd11690819490fb0fff8bbf4e3bd1756cc5ef77761a1ef016

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