Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b6c116d14128f23…

MALICIOUS

PDF

73.0 KB Created: 2021-02-24 09:43:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4d655952ee939f667fc1e313865bb38d SHA-1: c7ea7bb8b97067a8ab5281174a6157f18761f096 SHA-256: 2b6c116d14128f23229e247c0df4c1926c3ba0b9b45913f076fa21f4bd193d00
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://leonvi.ru/wix?keyword=definicion+de+manual+de+calidad PDF link annotation
    • https://cdn.sqhk.co/wubukuxivupe/giage9D/powababofugenodowakagod.pdfIn PDF document text
    • https://cdn.sqhk.co/raninogozo/BWjhgjy/cute_cartoon_animals_wallpapers_free.pdfIn PDF document text
    • http://summ-ita.space/blue_book_used_cars_for_salem0xtx.pdfIn PDF document text
    • http://rabota-plus.club/21214715140drerb.pdfIn PDF document text
    • https://cdn.sqhk.co/rukeditele/dtjiign/xifunadobin.pdfIn PDF document text
    • http://devicesprotectionforusers.site/new_call_of_duty_xbox_one_2020i75ez.pdfIn PDF document text
    • https://cdn.sqhk.co/zurefaxenov/jhgh93f/83313259505.pdfIn PDF document text
    • https://cdn.sqhk.co/rifelefiw/dEhjhJh/gegurut.pdfIn PDF document text
    • https://cdn.sqhk.co/nuvexajamu/ijkgii1/39509101459.pdfIn PDF document text
    • https://cdn.sqhk.co/kanedufopuma/sjdgiji/64771749689.pdfIn PDF document text
    • https://sopaxibifezubin.weebly.com/uploads/1/3/4/6/134608036/sorafilike.pdfIn PDF document text
    • https://cdn.sqhk.co/pamavunawi/hfC65MM/pixel_gun_apocalypse_unblocked_games_76_ez.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000e179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE179 4892 bytes
SHA-256: 5a062a5e55d8eb113780a8d84c1d3df62f638bd5f26b48ec0cc4189e6b204b9a
font_01_sfnt_off0000f216.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF216 11140 bytes
SHA-256: 11320a40b5712ae7b4d661756f6d476c96b36c3c99fdc076d1d8fe086ac150ed