Malicious PDF — malware analysis report

Static analysis result for SHA-256 68b8b874f4dcfa66…

MALICIOUS

PDF

71.4 KB Created: 2021-02-11 22:23:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 64f24938271278c78ee1d1f89bcd3b94 SHA-1: 64fd9490f9b11c1694d076c0805fce76b3477ecb SHA-256: 68b8b874f4dcfa66b8011fb04d773ad98f5f66d086f91a88f859b9590365fa10
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/wix?keyword=me+ch+ah+ah+ah In PDF document text
    • http://medtechnika1.ru/the_king_netflix_game_of_thronesxg6sb.pdfIn PDF document text
    • https://fojaxekixuwid.weebly.com/uploads/1/3/4/7/134743661/839430.pdfIn PDF document text
    • http://italia-doc.fun/dizosifonekeqp6gk.pdfIn PDF document text
    • http://grinallex.shop/60320572300ml949.pdfIn PDF document text
    • https://jodajapiguzok.weebly.com/uploads/1/3/2/7/132710756/rawenanuxuximafab.pdfIn PDF document text
    • http://kanshoper.site/birks_works_lead_sheetue5gi.pdfIn PDF document text
    • https://jopulovi.weebly.com/uploads/1/3/4/2/134265775/tukek.pdfIn PDF document text
    • http://golomashvanna.xyz/62599819344g17jb.pdfIn PDF document text
    • https://roralolew.weebly.com/uploads/1/3/0/7/130775143/e5da04acf00f92.pdfIn PDF document text
    • http://grantmedica.ru/5624687042hv7p3.pdfIn PDF document text
    • http://granitmetrospecstroy.ru/galaxy_moto_rider_2_mod_apk_downloadxbm7y.pdfIn PDF document text
    • http://reactivascotia2020.com/economist_subscription_offers_ukk8ib0.pdfIn PDF document text
    • https://xexajuxeleseg.weebly.com/uploads/1/3/4/5/134592224/ff975.pdfIn PDF document text
    • http://madewithsunshine.com/class_attendance_register_format_in_exceluif0l.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/dupula/rupisuxedunajofuj.pdfIn PDF document text
    • https://s3.amazonaws.com/bawalidamovidud/vupobe.pdfIn PDF document text
    • https://s3.amazonaws.com/mavixu/zezujofevolilobax.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/netflix_serie_en_mb.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_off0000d654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD654 4584 bytes
SHA-256: f98993e8a578d94d64f208c28f16303866e3282a3a227578611242c02b3a06a0
font_01_sfnt_off0000e5f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5F7 13476 bytes
SHA-256: cde0e998981cf38408bbbad42876dbde1987dacf47d6c981bf6b424350cc6d18