Malicious PDF — malware analysis report

Static analysis result for SHA-256 c979a9bd0478c3b0…

MALICIOUS

PDF

72.0 KB Created: 2021-02-07 22:12:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: a7472657eebf3844091e1b65b7348470 SHA-1: 3fedf98dfd6805f66b28efe37c513cd4dabe1598 SHA-256: c979a9bd0478c3b020087415f4717cae725855a4dd430593a887c924bfb6737d
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://maypoin.ru/aws?utm_term=expedicion+botanica+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4420034/normal_5fd7ae78e2f2d.pdfIn PDF document text
    • https://cdn.sqhk.co/linewebozid/eQh0JoX/100hitz_alternative_playlist.pdfIn PDF document text
    • https://cdn.sqhk.co/letojeka/9hciggi/xajuloj.pdfIn PDF document text
    • https://cdn.sqhk.co/wajerewuwer/dUhbgib/sunflower_maze_near_me_syracuse_ny.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481990/normal_5fc83d99e0ae2.pdfIn PDF document text
    • http://bogavevi.22web.org/aiyyaa_mp4_songs_free.pdfIn PDF document text
    • https://cdn.sqhk.co/talurelope/jgfC2rX/doom_2_levels_wads.pdfIn PDF document text
    • https://cdn.sqhk.co/makubeku/gdgfhhX/50524616176.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4423714/normal_5ff0015e3ca01.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4428043/normal_5fccabb4bb9c8.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/dukexajuj/naneduledofurex.pdfIn PDF document text
    • https://s3.amazonaws.com/semuxemakaw/alien_shooter_2_the_legend_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/dudurat/73103195215.pdfIn PDF document text
    • https://s3.amazonaws.com/midaguvimabof/17793890630.pdfIn PDF document text
    • http://pidivatepijalaw.epizy.com/5400739355.pdfIn PDF document text
    • http://wojotefeva.rf.gd/apa_style_referencing_guide_unisa.pdfIn PDF document text
    • https://s3.amazonaws.com/zisulamisozoto/application_x-_www-_form-_urlencoded_l_g.pdfIn PDF document text
    • https://s3.amazonaws.com/palevijuj/html5_template_freelancer.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_off0000dd2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD2D 5008 bytes
SHA-256: c1c5e4bd42b443f7de03e5625c6ba600165be4ddccad3d71d5f2c1cade03d25a
font_01_sfnt_off0000ee51.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE51 11020 bytes
SHA-256: 6eb39afa50a2278c8c9e3d585707bcf1dfd22601ec7f4eb76d629d3b46c97066