Malicious PDF — malware analysis report

Static analysis result for SHA-256 02aac00a2ba7988d…

MALICIOUS

PDF

73.3 KB Created: 2021-02-12 16:43:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 6eaf7e92cddd544bf459cbb17e6cecfa SHA-1: 9d71a23f07f5f020bc509957fc0cf29e609bb2c6 SHA-256: 02aac00a2ba7988d00d5621921ed4a88db8f91b3a66c329c61a46a2aec1cee7e
96 Risk Score

Malware Insights

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

The file is a PDF document flagged as malicious by ClamAV and an ML classifier. It contains an embedded URI pointing to 'maypoin.ru', which is likely a phishing or malware distribution site. The document body, though heavily obfuscated, contains text related to 'Avg pro full apk android', suggesting a lure for software downloads. No scripts were extracted, but the presence of external URIs and the overall detection profile indicate a phishing or malware distribution attempt.

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://maypoin.ru/wb?keyword=avg%20pro%20full%20apk%20android PDF link annotation
    • http://fokefetebebinin.66ghz.com/ministry_of_health_uganda_clinical_guidelines.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368962/normal_6006aeb3243cb.pdfIn PDF document text
    • http://kibipasadas.iblogger.org/punjabi_boliyan_song_video.pdfIn PDF document text
    • http://jelesanu.iblogger.org/lefobebuxupoteletini.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426269/normal_5fe15d50a3a7f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419654/normal_601483775f610.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450038/normal_5ff9c9bdad5ff.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/pegebunov/camtasia_studio_7._1._1.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/free_powerpoint_template_timeline.pdfIn PDF document text
    • http://sokevigaku.rf.gd/crystal_reports_totext_currency_symbol.pdfIn PDF document text
    • http://latevafizatum.rf.gd/numerologia_22_conny_mendez.pdfIn PDF document text
    • http://podekorutad.rf.gd/63401343194.pdfIn PDF document text
    • https://s3.amazonaws.com/rirusozo/adobe_flash_player_update_firefox_free.pdfIn PDF document text
    • http://nelipofamarul.epizy.com/equine_answers_mud_warrior.pdfIn PDF document text
    • http://fowowoge.rf.gd/11666622555.pdfIn PDF document text
    • http://lobulowigewimu.epizy.com/attention_to_formal_letter.pdfIn PDF document text
    • http://xowepiguxuwo.epizy.com/babul_ka_ghar_hd_video_song.pdfIn PDF document text
    • http://botozagelexi.rf.gd/paragraph_correction_worksheets_7th_grade.pdfIn PDF document text
    • http://tufebogepamik.rf.gd/hollywood_reporter_top_film_schools.pdfIn PDF document text
    • http://jevusavisa.epizy.com/nuwusisuxotukukozajired.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/appendix-_14_form_of_nomination.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_off0000e4e0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4E0 5144 bytes
SHA-256: 6601e971b4d68a893d9bda5c4b3313480c3600a1cd8328fde4ecf615d150254c
font_01_sfnt_off0000f681.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF681 9916 bytes
SHA-256: e54ab74f38d57a0e76b076e1ff2c916676df5575029c270c738862425168fecf

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