Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7fb6be4cab0574c…

MALICIOUS

PDF

68.4 KB Created: 2021-01-30 20:32:47 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 302722315104a1bfeac517eac79fe72f SHA-1: b82c14d907027da24ddf5fc575f0c4a5feb4d1ef SHA-256: e7fb6be4cab0574c5ea4b310470cfe5a138e105e0f197d3d71a3900f594661b5
196 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
  • 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://traffnew.ru/wb?keyword=shadow%20demon%20slayer PDF link annotation
    • http://italia-doc.space/vertigo_movie_poster_designerkrv4b.pdfIn PDF document text
    • http://trend-sales.fun/datud33bao.pdfIn PDF document text
    • https://cdn.sqhk.co/gegefemorosu/piilje4/north_star_imaging_allen_texas.pdfIn PDF document text
    • https://cdn.sqhk.co/laripikiwafo/ggjiggg/maze_planet_3d_online.pdfIn PDF document text
    • https://wawupibinotab.weebly.com/uploads/1/3/4/9/134900246/064c6b9.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/fakuguvil/free_splash_screen_generator_android.pdfIn PDF document text
    • https://s3.amazonaws.com/nonabafat/25136019533.pdfIn PDF document text
    • https://s3.amazonaws.com/mubemutolewe/wwe_highly_compressed_android_games_apk_data.pdfIn PDF document text
    • http://fibubaxuvuvixik.epizy.com/bujotemawodujibaguxi.pdfIn PDF document text
    • https://s3.amazonaws.com/jevelel/chrome_extensions_opera.pdfIn PDF document text
    • https://s3.amazonaws.com/rekorewexidiwo/halo_3_xbox_360_iso.pdfIn PDF document text
    • https://s3.amazonaws.com/dujepav/bhagavad_gita_in_telugu_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fewunadupop/apsacs_fort_road_date_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/pirofopafu/gingerbread_house_template_tasty.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezodepugov/pifapesotenozelo.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_off0000ccfe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCFE 5360 bytes
SHA-256: 7a93c3142d74260cd90f3057db1956d6255153f89db5e0a59254c96ec429b694
font_01_sfnt_off0000df1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF1E 11368 bytes
SHA-256: 6131b8ad8b1d0407a127737465b49fa5ea1b2cd11c65728f3195d2778e7a1290