Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e28f59d703376fd…

MALICIOUS

PDF

81.9 KB Created: 2021-03-23 11:55:36 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: ca6c19683a95554d9c44c95a2f2525a9 SHA-1: bcadb28f8c678350bfbde2b1682c9fdb0899e9c6 SHA-256: 9e28f59d703376fd69da77ae8fe165e1b1ec7e7141416c0299176b4fef82adf4
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a suspicious domain, which is highly indicative of a phishing or malware distribution attempt. The ML classifier and ClamAV detection strongly support its malicious nature. The document body, though heavily obfuscated, contains keywords related to search queries, suggesting a lure to a malicious website.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9992

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://midufefew.ru/wix?keyword=wii+operations+manual+phone+number
    • http://best-ital.fun/normal_csf_reportysz0q.pdf
    • http://fufibubesex.iblogger.org/executive_summary_template_in_word.pdf
    • http://makamar.tech/nurenapukulatuxadomobn23u.pdf
    • http://bestpriceforukraine.xyz/40752474969m0e59.pdf
    • http://letnesil.xyz/vidmate_app_install_old_version_iosnlpiz.pdf
    • http://stroiline74.ru/69615442563hqydw.pdf
    • http://hesap-al-sat.com/tebulebw9jz4.pdf
    • http://rasezinetoge.iblogger.org/scrabble_letters_template_printable.pdf
    • http://kellys.space/wipoxowusowimemafubupileqtn5b.pdf
    • http://swiss-gear.store/basic_html_tags_list_with_description6olhc.pdf
    • http://kekemubitaf.iblogger.org/eclipse_for_selenium_automation.pdf
    • http://italylife.pro/a_critical_review_of_a_journal_article_examplengkpg.pdf
    • http://topepuxabi.iblogger.org/lizidekalavoraz.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • http://gomojopovin.rf.gd/70185938651.pdf
    • http://jonegukum.epizy.com/jemixobape.pdf
    • http://mezoninol.epizy.com/lab_safety_manual.pdf
    • http://jetuloloz.epizy.com/how_to_become_a_good_team_player.pdf
    • http://nuzuxuzenexeku.rf.gd/miku_hatsune_voice_synthesizer.pdf
    • http://jutademopewe.epizy.com/thank_you_lord_for_loving_me_hymn_lyrics.pdf
    • http://rumusajebal.rf.gd/darker_fifty_shades_darker_as_told_by_christian_online.pdf
    • https://uploads.strikinglycdn.com/files/57abd4fd-2b41-4b79-9220-fb499431c41e/77483583132.pdf
    • https://uploads.strikinglycdn.com/files/975a1d85-bb32-40f6-be9c-b07cc517ceab/70824340323.pdf
    • http://sulifuzefusuw.rf.gd/38544150474.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_off0000f76a.bin
3f19dd23433a8b86a26cbc8c1a9c42fa14e00741910ee2cc68599260f5969926		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF76A 5092 bytes
font_01_sfnt_off00010882.bin
9995128132f10c2feb5be529a6fe25e41bb9c24b30b7f73bf9acc4e5f34a4fb4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10882 10256 bytes
font_02_sfnt_off00012bd3.bin
0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12BD3 4324 bytes

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