Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2b355cf6ef22d99…

MALICIOUS

PDF

78.1 KB Created: 2021-02-26 14:52:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 3b5500df27f202f8a7e59380b7de7131 SHA-1: 65a0b8c7ff91ea1c81a1521bdcc51f7c9d73c5ef SHA-256: b2b355cf6ef22d99b4c7ed33096f3ace82182ba1e66c53bf7eb3bc1869a0cbd4
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://crophysi.ru/award?keyword=how+to+get+ikea+catalogue In PDF document text
    • https://cdn.sqhk.co/famazipow/Kigiajj/oklahoma_football_recruiting_247.pdfIn PDF document text
    • http://bluebadgeapproval.com/autel_tpms_pad_manual7uvkj.pdfIn PDF document text
    • https://cdn.sqhk.co/wexopaxine/4gjrdjd/pick_me_up_apk_uptodown.pdfIn PDF document text
    • https://cdn.sqhk.co/gukokefa/jgrgggi/tajiwagujasuxewunasu.pdfIn PDF document text
    • http://kujunat.medianewsonline.com/14492093712.pdfIn PDF document text
    • https://cdn.sqhk.co/feduvefas/jhG5jbk/zombie_invasion_wallpaper_video.pdfIn PDF document text
    • http://bibuzikufaje.mygamesonline.org/gijavimisuxolutegozozumu.pdfIn PDF document text
    • https://cdn.sqhk.co/vojazodelud/Mijwha5/japanese_alphabet_song_tiktok_dance.pdfIn PDF document text
    • https://cdn.sqhk.co/gobuwovuv/QyjqhjO/55841425912.pdfIn PDF document text
    • http://useporte.xyz/jump_rope_review2mrk0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gafodix.myartsonline.com/sharp_aquos_reset_pin.pdfIn PDF document text
    • https://s3.amazonaws.com/waxapoz/lulubu.pdfIn PDF document text
    • https://s3.amazonaws.com/fotojipifuzitul/kuligogefuguzifadaboxepog.pdfIn PDF document text
    • https://s3.amazonaws.com/xidazeze/13043824671.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwimadaneb/1794-aent_setting_ip_address.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_off0000f780.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF780 4812 bytes
SHA-256: bd041bec6598d61aa4956210a16c367cbb0c678586cd0154d9ba88105c05a212
font_01_sfnt_off00010811.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10811 10396 bytes
SHA-256: 67ad77dbda92290bf38dbeca451b39317c325476006832482bde8c5d0d62d586