Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6077ce127b5e272…

MALICIOUS

PDF

72.5 KB Created: 2021-02-16 13:44:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: e773fd005bddbe166a9d12158d46dd23 SHA-1: ccf1572a7073f12ca6f3346ebc7365d665fe5c7a SHA-256: b6077ce127b5e272389d68cea1925501644b7bd7a9f42539a77570be0ae67161
144 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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/aws?utm_term=twilight+part+2+full+movie+download+in+hindi+480p PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369185/normal_60208d0ad0500.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443799/normal_5fcc453270760.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412575/normal_602492b8cdbe8.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/leributafa/65255832466.pdfIn PDF document text
    • https://s3.amazonaws.com/vinejivunitego/math_games_for_grade_3_free.pdfIn PDF document text
    • http://bisiziwaros.epizy.com/kahoot_game_pin_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/jojitagifuva/96930117359.pdfIn PDF document text
    • http://tunazafagid.epizy.com/bebipipud.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/sqlplus_format_output_for_email.pdfIn PDF document text
    • http://tavupikegoseri.epizy.com/sebutupupugal.pdfIn PDF document text
    • http://zamudijofo.epizy.com/22690982731.pdfIn PDF document text
    • https://s3.amazonaws.com/zisulamisozoto/34177916812.pdfIn PDF document text
    • http://sujomux.rf.gd/15233017040.pdfIn PDF document text
    • http://murorutikuba.rf.gd/53201660603.pdfIn PDF document text
    • https://s3.amazonaws.com/xewamejixolefaj/mutemisowojolaj.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_off0000dc91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC91 5932 bytes
SHA-256: f057bbf3472037b633de1959b3075fad6b969587a47103131cf36d139b868a6e
font_01_sfnt_off0000f0b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0B4 10592 bytes
SHA-256: 78db7254f531d69d28246384f2da79299931007aa48b3e0c300631ac862047a8