Malicious PDF — malware analysis report

Static analysis result for SHA-256 23a7597507ad6583…

MALICIOUS

PDF

72.5 KB Created: 2021-02-11 19:23:05 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 291ce6a8d007899e0862a759820a87d9 SHA-1: 5758ab5ccf5adcccc858ad0ee77c6394c2e7cf84 SHA-256: 23a7597507ad658383eb9e89215a06a702c88376c986a2f11710996221e974b1
136 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
  • 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://bologen.ru/wix?keyword=human+anatomy+and+physiology+lab+manual+12th+edition+pdf+free PDF link annotation
    • https://cdn.sqhk.co/wojusipi/fOos7Sk/jenepifaresenibubujof.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495976/normal_5fc9ec417ae17.pdfIn PDF document text
    • http://egrn-order.online/open_world_driving_games_androidlqr7o.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411691/normal_600fc7971e7f5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4463308/normal_5ff27bb2b19fa.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4410416/normal_5fff3ef43b938.pdfIn PDF document text
    • http://sosunimepewe.22web.org/last_battleground_game_apkpure.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403806/normal_5fc848aa63620.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4389376/normal_5ffbdf0d2075a.pdfIn PDF document text
    • https://cdn.sqhk.co/rumomezojeku/UOYCiac/pudanivirurapefaxupewib.pdfIn PDF document text
    • https://cdn.sqhk.co/goxobuve/0HjdJDS/my_talking_pet_pro_apkpure.pdfIn PDF document text
    • https://cdn.sqhk.co/golizojuw/hiHVSa0/free_bass_booster_for_spotify.pdfIn PDF document text
    • http://hrushch.space/dop_draw_one_part_level_424b7squ.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://gipanigiwulaj.epizy.com/38812801.pdfIn PDF document text
    • http://lopovimefadepom.epizy.com/76321794395.pdfIn PDF document text
    • http://nusavigosewu.epizy.com/95987338423.pdfIn PDF document text
    • http://vekifaxofezawe.epizy.com/arasan_song_free.pdfIn PDF document text
    • http://nolonogatifotop.epizy.com/alesana_songs_free.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_off0000dd1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD1E 5844 bytes
SHA-256: b1436ca0eeb2fdaabb77455f084fdb243d7ee0dad82f49d68ab06c2ba08f7bc8
font_01_sfnt_off0000f0dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0DD 10492 bytes
SHA-256: 16dde1a18f6abfa367c67dffc66aaee5ef2ed8f2a152fcb28c8680c742536849