Malicious PDF — malware analysis report

Static analysis result for SHA-256 b864c51ab2ac026a…

MALICIOUS

PDF

71.8 KB Created: 2021-02-26 22:32:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 58150d4294c8637d888f384d8beb590d SHA-1: 5d2211068d947c4e3a17f864c2f8dd754c0adec4 SHA-256: b864c51ab2ac026aa754372f75950b08f316f8cbabcba80307ec505bbc709d0b
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://baarspo.ru/award?keyword=goodnight+stories+for+rebel+girls+2 PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4390095/normal_5fe2fbf7b65b8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4480414/normal_5fcc3e6e76f16.pdfIn PDF document text
    • http://megantv.site/zmodeler_1.7b_downloadit9yp.pdfIn PDF document text
    • http://ig-copyrighthelpcenter.com/dabunafimidazixewefojyiz5.pdfIn PDF document text
    • http://lefuvaguvupawax.iblogger.org/liz_ielts_writing_task_1_with_answers.pdfIn PDF document text
    • http://vittorguxx.site/ample_guitar_m_lite_vstc5tfh.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420610/normal_5fcc300d069d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413362/normal_60234a5fc00fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368767/normal_60162b5c6a64a.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/pajeriramal/cateye_velo_wireless_cycle_computer_manual.pdfIn PDF document text
    • http://sobegomogi.rf.gd/computational_fluid_dynamics_hoffmann_vol_2.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/coroline_corrugated_bitumen_green_roof_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/vidadaviwal/19897367133.pdfIn PDF document text
    • https://s3.amazonaws.com/kifutizijebuj/nfl_fantasy_football_2019_cheat_sheet.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_off0000d83c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD83C 5260 bytes
SHA-256: 2eb10bd2d089f4fd5a06dc3bd85e2c61a2cb377dad1ae225da2c0155f20b746c
font_01_sfnt_off0000ea1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA1C 13848 bytes
SHA-256: cdb5cab9c838cfd08e081b3b2313704b61f0d59013f53e843ccb235293079ce0